WO2021135374A1 - 电机冷却系统、电机定子及盘式电机 - Google Patents

电机冷却系统、电机定子及盘式电机 Download PDF

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Publication number
WO2021135374A1
WO2021135374A1 PCT/CN2020/114633 CN2020114633W WO2021135374A1 WO 2021135374 A1 WO2021135374 A1 WO 2021135374A1 CN 2020114633 W CN2020114633 W CN 2020114633W WO 2021135374 A1 WO2021135374 A1 WO 2021135374A1
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WO
WIPO (PCT)
Prior art keywords
coil
cooling
motor
stator
channel
Prior art date
Application number
PCT/CN2020/114633
Other languages
English (en)
French (fr)
Inventor
田井呈
袁峥
黄厚佳
夏辰宇
Original Assignee
浙江盘毂动力科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN201911413885.7A external-priority patent/CN113131638A/zh
Priority claimed from CN201922502607.0U external-priority patent/CN211127334U/zh
Application filed by 浙江盘毂动力科技有限公司 filed Critical 浙江盘毂动力科技有限公司
Priority to EP20909552.0A priority Critical patent/EP4087092A4/en
Priority to US17/624,800 priority patent/US11990808B2/en
Publication of WO2021135374A1 publication Critical patent/WO2021135374A1/zh

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • 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
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets

Definitions

  • the present invention relates to the technical field of motors, in particular to a motor cooling system, a motor stator and a disc motor.
  • the first object of the present invention is to provide a motor cooling system that can cool the motor coils and avoid the motor's temperature rise causing the motor to burn out.
  • the second object of the present invention is to provide a motor stator
  • the third object of the present invention is to provide a disc motor.
  • the present invention provides the following solutions:
  • a motor cooling system for cooling the motor stator including an insulated cooling pipeline
  • the insulated cooling pipeline is installed on the stator housing, and the top surface of the insulated cooling pipeline is lower than or flush with the top surface of the stator core, and the bottom surface of the insulated cooling pipeline is connected to the stator core of the motor. Coil contact for cooling the coil;
  • the top surface of the stator core is used to be arranged opposite to the rotor, so that the magnetic field generated by the coil can interact with the permanent magnets of the rotor.
  • the insulated cooling pipeline includes a coil outer ring cooling pipeline
  • the coil outer ring cooling pipeline is in contact with the outer ring of the coil for cooling the outer ring of the coil.
  • the insulated cooling pipe further includes a coil inner ring cooling pipe
  • the coil inner ring cooling pipeline is in contact with the inner ring of the coil for cooling the inner ring of the coil.
  • the insulated cooling pipeline further includes a coil intermediate cooling pipeline
  • Both ends of the coil intermediate cooling pipeline are respectively connected to the coil inner ring cooling pipeline and the coil outer ring cooling pipeline, and the coil intermediate cooling pipeline is in contact with the middle connecting edge of the coil to cool The middle connecting side of the coil;
  • the middle connecting side of the coil refers to the connecting side connecting the inner ring and the outer ring of the coil.
  • the number of the coil intermediate cooling line, the coil inner ring cooling line, and the coil outer ring cooling line are multiple;
  • the inner coil cooling pipeline and the outer coil cooling pipeline are spaced apart, and each inner coil cooling pipeline only contacts the inner coil of one coil, and each outer coil cooling pipe The circuit only touches the outer ring of one said coil;
  • Two ends of the coil intermediate cooling pipe are respectively connected to one end of the coil inner ring cooling pipe and one end of the coil outer ring cooling pipe;
  • the insulated cooling pipeline is made of insulating ceramic or nylon;
  • the cross section of the insulated cooling pipeline is rectangular.
  • the motor cooling system further includes an iron core cooling channel
  • the iron core cooling channel is opened on the stator housing, located at the bottom of the stator iron core of the motor stator, and is used for cooling the stator iron core.
  • the core cooling channel includes a first outer channel, a second outer channel, and an inner channel
  • Both the first outer channel and the second outer channel are arranged outside the inner channel, and one end of the first outer channel is connected to one end of the inner channel, and the other end of the first outer channel Is the entrance end of the core cooling channel;
  • the other end of the inner channel is in conduction with one end of the second outer channel, and the other end of the second outer channel is the outlet end of the iron core cooling channel;
  • the inlet end and the outlet end of the iron core cooling channel are both opened on the same side of the stator housing.
  • the present invention discloses that when the motor cooling system is used, circulating cooling liquid is respectively passed into the insulated cooling pipeline. Since the outer bottom surface of the insulated cooling pipe is in contact with the coil of the motor stator, the cooling liquid in the insulated cooling pipe can cool the coil through heat conduction. The invention can realize the cooling of the motor coils and avoid the motor temperature rise causing the motor to be burnt down.
  • the top surface of the insulated cooling pipeline is lower than or flush with the top surface of the stator core, it is possible to prevent the coolant in the insulated cooling pipeline from affecting the magnetic gap between the motor rotor and the motor stator.
  • the present invention provides the following solutions:
  • a motor stator comprising a stator casing, an iron core and a coil, and further comprising the motor cooling system as described in any one of the above;
  • One of the outer wall circumference of the stator core and the inner wall circumference of the stator housing is provided with a first positioning groove, and the other is provided with a first positioning protrusion that fits with the first positioning groove, so The stator core is glued in the stator housing;
  • the coil is embedded in the core slot of the stator core, and the top surface of the coil is lower than the top of the core slot.
  • the motor stator further includes a bearing chamber
  • the bearing chamber is installed in the stator housing and is arranged coaxially with the stator housing;
  • the top end of the stator housing is provided with an outer circle mounting hole
  • the top end of the bearing chamber is provided with an inner circle mounting hole
  • the outer wall of the insulating cooling pipeline is connected with the outer circle mounting hole by a screw
  • the insulating cooling The inner wall of the pipeline is connected with the inner circular mounting hole through a screw;
  • One of the inner wall circumference of the stator core and the outer wall circumference of the bearing chamber is provided with a second positioning groove, and the other is provided with a second positioning protrusion that fits with the second positioning groove;
  • the bottom surface of the insulating cooling pipe is in contact with the top surface of the coil, and the top surface of the insulating cooling pipe is flush with the top of the iron core slot.
  • the motor stator provided by the present invention includes any of the above-mentioned motor cooling systems, the beneficial effects of the motor cooling system provided by the present invention are all included in the motor stator provided by the present invention.
  • one of the outer wall circumference of the iron core and the inner wall circumference of the stator housing is provided with a positioning groove, and the other is provided with a positioning protrusion that fits with the positioning groove, it is convenient to locate and install the iron core and prevent the iron core from rotating. .
  • the present invention provides the following solutions:
  • a disc motor includes the motor stator as described above.
  • the disk motor provided by the present invention includes any one of the above-mentioned motor stators, the beneficial effects of the motor stator provided by the present invention are all included in the disk motor provided by the present invention.
  • Fig. 1 is a schematic diagram of the structure of a motor stator provided by the present invention
  • FIG. 2 is a schematic diagram of the structure of the stator housing of the motor stator provided by the present invention.
  • FIG. 3 is a schematic diagram of the structure of the insulated cooling pipeline of the motor cooling system provided by the present invention.
  • FIG. 4 is a schematic diagram of the structure of the coil of the motor stator provided by the present invention.
  • FIG. 5 is a schematic diagram of the structure of the iron core of the motor stator provided by the present invention.
  • Fig. 6 is a schematic diagram of the structure of the motor stator provided by the present invention during cooling.
  • Core cooling channel 1 insulation cooling pipe 2, stator housing 3, stator core 4, coil 5, coil outer ring cooling pipe 201, outer ring 501, coil inner ring cooling pipe 202, inner ring 502, coil
  • the invention provides a motor cooling system for cooling the motor stator.
  • the motor cooling system includes an insulated cooling pipeline 2.
  • the insulated cooling pipe 2 is installed on the stator housing 3, and the top surface of the insulated cooling pipe 2 is lower than or flush with the top surface of the stator core 4 to prevent the coolant in the insulated cooling pipe 2 from affecting the motor rotor and The magnetic gap of the motor stator. It should be noted that the top surface of the insulated cooling pipe 2 may also be slightly higher than the top surface of the stator core 4.
  • the outer bottom surface of the insulated cooling pipe 2 is in contact with the coil 5 of the motor stator, and is used for cooling the coil 5. It should be noted that the insulated cooling pipe 2 needs to have good insulation and thermal conductivity, and be non-magnetic and non-conductive. Specifically, it can be made of ceramic material, or nylon material or the like.
  • the top surface of the stator core 4 is used to be opposite to the rotor, so that the magnetic field generated by the coil 5 can interact with the permanent magnets of the rotor.
  • the coil 5 is fed with an external alternating current, and the magnetic field generated by the current acts on the rotor part of the motor through the conduction of the stator core 4 to drive the rotor to rotate, thereby realizing the conversion of electrical energy to mechanical energy, or an external rotating machine drives the rotor to rotate,
  • the magnetic field of the rotor acts on the coil 5 through the conduction of the stator core 4 and generates electrical energy, thereby realizing the conversion of mechanical energy to electrical energy.
  • the present invention discloses that when the motor cooling system is used, circulating cooling liquid is passed into the insulated cooling pipe 2. Since the outer bottom surface of the insulated cooling pipe 2 is in contact with the coil 5 of the motor stator, the cooling liquid in the insulated cooling pipe 2 The coil 5 can be cooled by heat conduction. The invention can cool the coil 5 of the motor, and avoid the motor's temperature rise causing the motor to burn out.
  • the top surface of the inner wall of the insulated cooling pipe 2 is lower than or flush with the top surface of the stator core 4, it is possible to prevent the coolant in the insulated cooling pipe 2 from affecting the magnetic gap between the motor rotor and the motor stator.
  • the structure of the motor cooling system in this embodiment is similar to that of the motor cooling system in the first embodiment, and the similarities are not repeated here, and only the differences are introduced.
  • the present invention specifically discloses that the insulated cooling pipe 2 includes a coil outer ring cooling pipe 201, and the coil outer ring cooling pipe 201 is in contact with the outer ring 501 of the coil 5 for cooling the outer ring 501 of the coil 5.
  • the outer ring 501 of the coil 5 refers to the side of the coil 5 away from the axis of the stator core 4.
  • the present invention specifically discloses that the insulated cooling pipe 2 includes a coil inner ring cooling pipe 202, and the coil inner ring cooling pipe 202 is in contact with the inner ring 502 of the coil 5 for cooling the inner ring 502 of the coil 5.
  • the outer ring 501 of the coil 5 refers to the side of the coil 5 close to the axis of the stator core 4.
  • the insulated cooling pipeline 2 may include only the outer coil cooling pipeline 201, or may include only the inner coil cooling pipeline 202, or may include both the outer coil cooling pipeline 201 and the inner coil. Cooling line 202. In this embodiment, the insulated cooling pipeline 2 includes both the outer coil cooling pipeline 201 and the inner coil cooling pipeline 202 as an example.
  • the insulated cooling pipe 2 further includes a coil intermediate cooling pipe 203, and both ends of the coil intermediate cooling pipe 203 are respectively connected to the coil inner ring cooling pipe 201 and the coil outer ring cooling pipe 202, and The coil intermediate cooling pipe 203 is in contact with the intermediate connecting edge 503 of the coil 5 to cool the intermediate connecting edge 503 of the coil 5 to further improve the efficiency of the insulated cooling pipe 2 to cool the coil 5.
  • the middle connecting side 503 of the coil 5 refers to the connecting side connecting the inner ring 502 and the outer ring 501 of the coil 5.
  • the coil intermediate cooling pipe 203, the coil inner ring cooling pipe 202, and the coil outer ring cooling pipe 201 can be arbitrarily conducted to form a circulation loop.
  • the present invention discloses that the number of coil intermediate cooling pipes 203, coil inner ring cooling pipes 202 and coil outer ring cooling pipes 201 are multiple, and the coil inner ring cooling pipe 202 and the coil outer ring cooling pipe
  • the circuits 201 are arranged at intervals, and each coil inner ring cooling pipe 202 only contacts the inner ring 502 of one coil 5, and each coil outer ring cooling pipe 201 only contacts the outer ring 501 of one coil 5.
  • the two ends of 203 are respectively connected to one end of the coil inner ring cooling pipe 202 and one end of the coil outer ring cooling pipe 201. It should be noted that the length of the coil outer ring cooling pipeline 201 can also be different.
  • the length of 501 can be set as required.
  • the length of the inner coil cooling pipeline 202 can also be different. It can only cover the length of the inner coil 502 of one coil 5, or it can be the length of the inner coil 502 of at least two adjacent coils 5 at the same time. Set according to your needs.
  • the present invention discloses that the top end of the stator housing 3 is provided with an outer circular mounting hole 9 and the top of the bearing chamber 8 is provided with an inner circular mounting hole 10.
  • a first extension block 11 is provided on the side of the inner coil cooling pipeline 202 close to the axis of the stator core 4.
  • the first extension block 11 is provided with a first mounting hole 12, and the screw passes through the first mounting hole 12 and the inner circle.
  • the mounting hole 10 realizes the connection between the coil inner ring cooling pipeline 202 and the bearing chamber 8.
  • the end of the coil intermediate cooling pipe 203 connected with the coil inner ring cooling pipe 202 extends in the direction away from the axis of the iron core to form a second extension block 13.
  • the second extension block 13 is provided with a second mounting hole 14 and screws Pass through the second mounting hole 14 and the outer circular mounting hole 9 to realize the connection between the coil intermediate cooling pipeline 203 and the stator housing 3.
  • the coil intermediate cooling pipe 203, the coil inner ring cooling pipe 202, and the coil outer ring cooling pipe 201 are integrally formed and connected.
  • the present invention discloses that the top end of the bearing chamber 8 is provided with a first sink groove 15, the inner circular mounting hole 10 is opened at the bottom of the first sink groove 15, and the first extension block 11 is placed in the first sink groove.
  • the nut of the screw is placed in the first sink slot 15;
  • the top of the stator housing 3 is provided with a second sink slot 16,
  • the outer circular mounting hole 9 is opened in the bottom of the second sink slot 16, and the second extension block 13 is placed in the second sink groove 16, and the nut of the screw is placed in the second sink groove 16.
  • the insulated cooling pipe 2 is made of insulating ceramic or nylon. It should be noted that it can also be made of other insulating, corrosion-resistant, non-magnetic, and non-conductive materials.
  • the insulating cooling pipeline 2 is made of insulating ceramics as an example. Insulated cooling pipeline 2 works at 180°C for a long time and the deformation does not exceed 0.1mm, and the wall thickness of insulated cooling pipeline 2 is between 0.5mm and 3mm.
  • the present invention discloses that the cross section of the insulated cooling pipe 2 is rectangular, that is, the insulated cooling pipe 2 is a rectangular pipe, or Trapezoidal tubes and other shapes of tubes.
  • the motor cooling system further includes an iron core cooling channel 1.
  • the iron core cooling channel 1 is opened on the stator housing 3 and is located at the bottom of the stator iron core 4 of the motor stator for cooling the stator iron core. 4.
  • the iron core cooling channel 1 is a slot with an open top, and the shape of the trajectory of the iron core cooling channel 1 is not limited, and may be circular arc, square, etc., or a combination of multiple different curves or straight lines.
  • the stator housing 3 is also provided with a cooling liquid inlet pipe 17 and a cooling liquid outlet pipe 18 respectively conductively connected to the outlet and the inlet of the iron core cooling channel 1. When in use, the iron core cooling channel 1 is filled with circulating coolant.
  • the iron core cooling channel 1 Since the iron core cooling channel 1 is opened on the stator housing 3 and is located at the bottom of the stator iron core 4 of the motor stator, the iron core cooling channel 1 The coolant can circulate the heat emitted by the stator core 4 and further reduce the risk of burning the motor due to the temperature rise of the motor.
  • the iron core cooling channel 1 includes a first outer channel 101, a second outer channel and an inner channel 102. Both the first outer channel 101 and the second outer channel are arranged outside the inner channel 102, and one end of the first outer channel 101 is connected to one end of the inner channel 102, and the other end of the first outer channel 101 is an iron core cooling channel 1.
  • the other end of the inner channel 102 is connected to one end of the second outer channel, and the other end of the second outer channel is the outlet end of the core cooling channel 1.
  • the inlet end and the outlet end of the iron core cooling channel 1 are both opened on the same side of the stator housing.
  • the mode of arranging the first outer passage 101, the second outer passage and the inner passage 102 increases the time of the cooling liquid in the iron core cooling passage 1 and can sufficiently remove the heat radiated by the stator iron core 4.
  • first outer channel 101, the second outer channel, and the inner channel 102 are not limited, and can be any shape, for example, it can be a circular arc channel, a straight channel, and the like.
  • the present invention discloses that the first outer passage 101, the second outer passage and the inner passage 102 are all arc-shaped passages, and the axis lines of the first outer passage 101, the second outer passage and the inner passage 102 are all coincident.
  • the stator housing 3 is provided with a bearing chamber 8 in which bearings are installed.
  • the outer wall of the bearing chamber 8 and the inner wall of the stator housing 3 are connected with a first partition wall 22, and the first partition wall 22 partitions the bearing chamber 8 from the stator housing.
  • the inner bottom of the stator housing 3 is provided with an arc-shaped wall 24, the arc-shaped wall 24 is located in the annular channel, and the head and the tail of the arc-shaped wall 24 are respectively located at the two ends of the first partition wall 22.
  • the first outer channel 101 consists of the second partition wall 23, the inner wall of the stator housing 3, and the outer wall of the arc-shaped wall 24 (here means that the arc-shaped wall 24 contains the entrance side of the core cooling channel 1 to the first partition wall 22) and the first partition wall 22.
  • the inner channel 102 is surrounded by the inner wall of the arc-shaped wall 24, the outer wall of the bearing chamber 8 and the first partition wall 22.
  • the first outer channel 101 consists of the first partition wall 22, the inner wall of the stator housing 3, and the outer wall of the arc-shaped wall 24 (here means that the arc-shaped wall 24 contains the exit side of the core cooling channel 1 to the first partition wall 22) and enclosed by the second partition wall 23.
  • the present invention provides a motor stator, which includes a stator housing 3, a stator core 4, a coil 5 and the motor cooling system as in any one of the above embodiments.
  • One of the outer wall circumference of the stator core 4 and the inner wall circumference of the stator housing 3 is provided with a first positioning groove 6, and the other is provided with a first positioning protrusion 7 that fits with the first positioning groove 6.
  • the present invention discloses that the number of first positioning grooves 6 and first positioning protrusions 7 is multiple.
  • the first positioning protrusions 7 are uniformly distributed on the outer wall of the stator core 4 in the circumferential direction.
  • the inner wall of the stator housing 3 is uniformly provided with first positioning grooves 6 in the circumferential direction.
  • the first positioning protrusions 7 are placed in the first positioning grooves 6 to facilitate the installation and positioning of the stator core 4.
  • stator core 4 is glued in the stator housing 3 to avoid opening a hole on the stator core 4 to cause magnetic flux leakage.
  • stator core 4 is a hollow ring with radiating slots along the circumference.
  • the main function of the stator core 4 is to conduct magnetism, that is, to provide a magnetic flux path for the magnetic field generated in the coil.
  • the stator core 4 is made of a metal composite material with magnetic permeability.
  • the coil 5 is embedded in the core slot of the stator core 4, and the top surface of the coil 5 is lower than the top of the core slot, so that a gap is formed between the top surface of the coil 5 and the top of the core slot, which is convenient for insulation
  • the cooling pipe 2 is placed in the gap, and the top surface of the insulating cooling pipe 2 is lower than, flush with, or slightly higher than the top of the core groove.
  • the bottom surface of the insulated cooling pipe 2 is in contact with the top surface of the coil 5, and the top surface of the insulated cooling pipe 2 is flush with the top of the core groove.
  • the stator of the motor further includes a bearing chamber 8, and the bearing chamber 8 is installed in the stator housing 3 and arranged coaxially with the stator housing 3.
  • the top of the stator housing 3 is provided with an outer circular mounting hole 9, and the top of the bearing chamber 8 is provided with an inner circular mounting hole 10.
  • the outer wall of the insulated cooling pipe 2 is connected with the outer circular mounting hole 9 by screws.
  • the inner wall is connected with the inner circular mounting hole 10 by screws, which facilitates the disassembly and assembly of the insulated cooling pipeline 2.
  • the present invention discloses that one of the inner wall circumference of the stator core 4 and the outer wall circumference of the bearing chamber 8 is provided with a second positioning groove 20, and the other is provided with a second positioning groove that fits with the second positioning groove 20. Convex 21.
  • the present invention discloses that the number of second positioning grooves 20 and second positioning protrusions 21 is multiple.
  • the second positioning grooves 20 are provided in the circumferential direction of the inner wall of the stator core 4.
  • the outer wall of the bearing chamber 8 is uniformly provided with second positioning protrusions 21 in the circumferential direction, and the second positioning protrusions 21 are placed in the second positioning groove 20 to facilitate the installation and positioning of the stator core 4.
  • stator housing 3 When assembling the stator of the motor disclosed in the present invention, first, the stator housing 3 is placed on the horizontal installation table with the opening upward; then, the stator core 4 is inserted into the housing along the axial direction, and the housing and the stator core 4 are bonded by glue. Surface 19; Then, insert the coil 5 into the core slot of the stator core 4 in the axial direction; finally, install the insulated cooling pipe 2 in the axial direction, and use screws to pass through the outer circular mounting hole 9, the second mounting hole 14, and the inner The circular mounting hole 10 and the first mounting hole 12 fix the insulated cooling pipe 2 on the stator housing 3.
  • the motor stator provided by the present invention includes the motor cooling system in any one of the above embodiments, the beneficial effects of the motor cooling system provided by the present invention are all included in the motor stator provided by the present invention.
  • one of the outer wall circumference of the stator core 4 and the inner wall circumference of the stator housing 3 is provided with a first positioning groove 6, the other is provided with a first positioning protrusion 7 that fits with the first positioning groove 6
  • One of the inner wall circumference of the stator core 4 and the outer wall circumference of the bearing chamber 8 is provided with a second positioning groove 20, and the other is provided with a second positioning protrusion 21 that fits with the second positioning groove 20, which is convenient for iron Positioning and installation of the core and preventing the core from rotating.
  • the present invention provides a disc motor, which includes the motor stator as in the third embodiment above.
  • the disk motor provided by the present invention includes the motor stator in the third embodiment, the beneficial effects of the motor stator provided by the present invention are all included in the disk motor provided by the present invention.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

一种电机冷却系统、电机定子及盘式电机，电机冷却系统包括绝缘冷却管路（2）；绝缘冷却管路（2）安装在定子壳体（3）上，且绝缘冷却管路（2）的顶面低于或者平齐于定子铁芯（4）的顶面，绝缘冷却管路（2）的底面与电机定子的线圈（5）接触，用于冷却线圈（5）；定子铁芯（4）的顶面用于与转子相对设置，从而使线圈（5）产生的磁场能够与转子永磁体相互作用。由于绝缘冷却管路（2）的外底面与电机定子的线圈（5）接触，因此，绝缘冷却管路（2）内的冷却液能够通过热传导冷却线圈（5），避免电机温升导致烧毁电机。

Description

电机冷却系统、电机定子及盘式电机
本申请要求于2019年12月31日提交中国专利局、申请号为201911413885.7、发明名称为“电机冷却系统、电机定子及盘式电机”的中国专利申请的优先权，以及于2019年12月31日提交中国专利局、申请号为201922502607.0、实用新型名称为“电机冷却系统、电机定子及盘式电机”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及电机技术领域，尤其是涉及一种电机冷却系统、电机定子及盘式电机。
背景技术
电机无论是做电动机运行还是做发电机运行，均会在线圈中产生能量损失，这部分能量将会导致电机温度上升，如不加以冷却，将会导致电机烧毁失效。
发明内容
有鉴于此，本发明的第一个目的是提供一种电机冷却系统，能够实现对电机线圈的冷却，避免电机温升导致烧毁电机。
本发明的第二个目的是提供一种电机定子；
本发明的第三个目的是提供一种盘式电机。
为了实现上述第一个目的，本发明提供了如下方案：
一种电机冷却系统，用于冷却电机定子，包括绝缘冷却管路；
所述绝缘冷却管路安装在定子壳体上，且所述绝缘冷却管路的顶面低于或者平齐于定子铁芯的顶面，所述绝缘冷却管路的底面与所述电机定子的线圈接触，用于冷却所述线圈；
所述定子铁芯的顶面用于与转子相对设置，从而使所述线圈产生的磁场能够与转子永磁体相互作用。
在一个具体的实施方案中，所述绝缘冷却管路包括线圈外圈冷却管路；
所述线圈外圈冷却管路与所述线圈的外圈接触，用于冷却所述线圈的外圈。
在另一个具体的实施方案中，所述绝缘冷却管还包括线圈内圈冷却管路；
所述线圈内圈冷却管路与所述线圈的内圈接触，用于冷却所述线圈的内圈。
在另一个具体的实施方案中，所述绝缘冷却管路还包括线圈中间冷却管路；
所述线圈中间冷却管路的两端分别导通所述线圈内圈冷却管路和所述线圈外圈冷却管路，且所述线圈中间冷却管路与所述线圈的中间连接边接触，冷却所述线圈的中间连接边；
所述线圈的中间连接边是指连接所述线圈的内圈和外圈的连接边。
在另一个具体的实施方案中，所述线圈中间冷却管路、所述线圈内圈冷却管路和所述线圈外圈冷却管路的个数均为多个；
所述线圈内圈冷却管路和所述线圈外圈冷却管路间隔布置，且每个所述线圈内圈冷却管路仅接触一个所述线圈的内圈，每个所述线圈外圈冷却管路仅接触一个所述线圈的外圈；
所述线圈中间冷却管路的两端分别导通所述线圈内圈冷却管路的一端和所述线圈外圈冷却管路的一端；
和/或
所述绝缘冷却管路为绝缘陶瓷或者尼龙制成；
和/或
所述绝缘冷却管路的横截面为矩形。
在另一个具体的实施方案中，所述电机冷却系统还包括铁芯冷却通道；
所述铁芯冷却通道开设在定子壳体上，位于所述电机定子的定子铁芯底部，用于冷却所述定子铁芯。
在另一个具体的实施方案中，所述铁芯冷却通道包括第一外通道、第二外通道和内通道；
所述第一外通道和第二外通道均围设在所述内通道的外部，且所述第一外通道的一端与所述内通道的一端导通，所述第一外通道的另一端为所述铁芯冷却通道的入口端；
所述内通道的另一端与所述第二外通道的一端导通，所述第二外通道的另一端为所述铁芯冷却通道的出口端；
所述铁芯冷却通道的入口端和出口端均开设在所述定子壳体的同一侧。
根据本发明的各个实施方案可以根据需要任意组合，这些组合之后所得的实施方案也在本发明范围内，是本发明具体实施方式的一部分。
在本发明的一个具体实施例中，本发明公开电机冷却系统使用时，将绝缘冷却管路中分别通入循环冷却液。由于绝缘冷却管路的外底面与电机定子的线圈接触，因此，绝缘冷却管路内的冷却液能够通过热传导冷却线圈。本发明能 够实现对电机线圈的冷却，避免电机温升导致烧毁电机。
此外，由于绝缘冷却管路的顶面低于或者平齐于定子铁芯的顶面，因此，能够避免绝缘冷却管路内的冷却液影响电机转子和电机定子间的磁隙。
为了实现上述第二个目的，本发明提供了如下方案：
一种电机定子，包括定子壳体、铁芯和线圈，还包括如上述中任意一项所述的电机冷却系统；
所述定子铁芯的外壁周向和所述定子壳体的内壁周向中一者上开设有第一定位槽，另一者上设置有与所述第一定位槽契合的第一定位凸起，所述定子铁芯粘在所述定子壳体内；
所述线圈嵌设在所述定子铁芯的铁芯槽内，且所述线圈的顶面低于所述铁芯槽的槽顶。
在一个具体的实施方案中，所述电机定子还包括轴承室；
所述轴承室安装在所述定子壳体内，且与所述定子壳体同轴心设置；
所述定子壳体的顶端开设有外圆安装孔，所述轴承室的顶端开设有内圆安装孔，所述绝缘冷却管路的外壁通过螺钉与所述外圆安装孔连接，所述绝缘冷却管路的内壁通过螺钉与所述内圆安装孔连接；
所述定子铁芯的内壁周向和所述轴承室的外壁周向中一者上开设有第二定位槽，另一者上设置有与所述第二定位槽契合的第二定位凸起；
和/或
所述绝缘冷却管路的底面与所述线圈的顶面接触，所述绝缘冷却管路的顶 面与所述铁芯槽的槽顶平齐。
由于本发明提供的电机定子包括上述任意一项中的电机冷却系统，因此，本发明提供的电机冷却系统所具有的有益效果均是本发明提供的电机定子所包含的。
此外，由于铁芯的外壁周向和定子壳体的内壁周向中一者上开设有定位槽，另一者上设置有与定位槽契合的定位凸起，便于铁芯的定位安装及防止铁芯转动。
为了实现上述第三个目的，本发明提供了如下方案：
一种盘式电机，包括如上述所述的电机定子。
由于本发明提供的盘式电机包括上述任意一项中的电机定子，因此，本发明提供的电机定子所具有的有益效果均是本发明提供的盘式电机所包含的。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明提供的电机定子的结构示意图；
图2为本发明提供的电机定子的定子壳体的结构示意图；
图3为本发明提供的电机冷却系统的绝缘冷却管路的结构示意图；
图4为本发明提供的电机定子的线圈的结构示意图；
图5为本发明提供的电机定子的铁芯的结构示意图；
图6为本发明提供的电机定子冷却时的结构示意图。
其中，图1-6中：
铁芯冷却通道1、绝缘冷却管路2、定子壳体3、定子铁芯4、线圈5、线圈外圈冷却管路201、外圈501、线圈内圈冷却管路202、内圈502、线圈中间冷却管路203、中间连接边503、第一外通道101、内通道102、第一定位槽6、第一定位凸起7、轴承室8、外圆安装孔9、内圆安装孔10、第一延伸块11、第一安装孔12、第二延伸块13、第二安装孔14、第一沉槽15、第二沉槽16、冷却液入口管17、冷却液出口管18、安装面19、第二定位槽20、第二定位凸起21、第一隔断壁22、第二隔断壁23、弧形壁24。
具体实施方式
为了使本领域的技术人员更好的理解本发明的技术方案，下面结合附图1-6和具体实施方式对本发明作进一步的详细说明。
实施例一
本发明提供了一种电机冷却系统，用于冷却电机定子。其中，电机冷却系统包括绝缘冷却管路2。
绝缘冷却管路2安装在定子壳体3上，且绝缘冷却管路2的顶面低于或者平齐于定子铁芯4的顶面，避免绝缘冷却管路2内的冷却液影响电机转子和电机定子的磁隙。需要说明的是，绝缘冷却管路2的顶面也可以略高于定子铁芯 4的顶面。
绝缘冷却管路2的外底面与电机定子的线圈5接触，用于冷却线圈5。需要说明的是，绝缘冷却管路2需要具有良好的绝缘性及导热性，且不导磁不导电。具体地，可以是陶瓷材质制成，也可以是尼龙材质等制成。
定子铁芯4的顶面用于与转子相对设置，从而使线圈5产生的磁场能够与转子永磁体相互作用。线圈5通入外部交变电流，该电流产生的磁场通过定子铁芯4的传导作用于电机的转子部分，驱动转子转动，从而实现电能向机械能的转换，或者，外部的旋转机械驱动转子转动，转子磁场通过定子铁芯4的传导作用于线圈5并产生电能，实现机械能向电能的转换。
本发明公开电机冷却系统使用时，将绝缘冷却管路2中通入循环冷却液，由于绝缘冷却管路2的外底面与电机定子的线圈5接触，因此，绝缘冷却管路2内的冷却液能够通过热传导冷却线圈5。本发明能够实现对电机的线圈5冷却，避免电机温升导致烧毁电机。
此外，由于绝缘冷却管路2内壁的顶面低于或者平齐于定子铁芯4的顶面，因此，能够避免绝缘冷却管路2内的冷却液影响电机转子和电机定子间的磁隙。
实施例二
在本发明提供的第二实施例中，本实施例中的电机冷却系统和实施例一中的电机冷却系统的结构类似，对相同之处就不再赘述了，仅介绍不同之处。
在本实施例中，本发明具体公开了绝缘冷却管路2包括线圈外圈冷却管路201，线圈外圈冷却管路201与线圈5的外圈501接触，用于冷却线圈5的外 圈501。具体地，线圈5的外圈501是指线圈5远离定子铁芯4轴心的那侧。
在本实施例中，本发明具体公开了绝缘冷却管路2包括线圈内圈冷却管路202，线圈内圈冷却管路202与线圈5的内圈502接触，用于冷却线圈5的内圈502。具体地，线圈5的外圈501是指线圈5靠近定子铁芯4轴心的那侧。
需要说明的是，绝缘冷却管路2可以仅包括线圈外圈冷却管路201，也可以是仅包括线圈内圈冷却管路202，还可以是同时包括线圈外圈冷却管路201和线圈内圈冷却管路202。本实施例以绝缘冷却管路2同时包括线圈外圈冷却管路201和线圈内圈冷却管路202为例。
进一步地，本发明公开了绝缘冷却管路2还包括线圈中间冷却管路203，线圈中间冷却管路203的两端分别导通线圈内圈冷却管路201和线圈外圈冷却管路202，且线圈中间冷却管路203与线圈5的中间连接边503接触，冷却线圈5的中间连接边503，进一步提高绝缘冷却管路2冷却线圈5的效率。具体地，线圈5的中间连接边503是指连接线圈5的内圈502和外圈501的连接边。
需要说明的是，线圈中间冷却管路203、线圈内圈冷却管路202和线圈外圈冷却管路201可以任意导通形成一个循环回路。
进一步地，本发明公开了线圈中间冷却管路203、线圈内圈冷却管路202和线圈外圈冷却管路201的个数均为多个，线圈内圈冷却管路202和线圈外圈冷却管路201依次间隔布置，且每个线圈内圈冷却管路202仅接触一个线圈5的内圈502，每个线圈外圈冷却管路201仅接触一个线圈5的外圈501，线圈中间冷却管路203的两端分别导通线圈内圈冷却管路202的一端和线圈外圈冷却管路201的一端。需要说明的是，也可以令线圈外圈冷却管路201的长度不同，可以是仅能覆盖一个线圈5外圈501的长度，也可以是同时冷却至少2 个相邻设置的线圈5的外圈501的长度，具体根据需要进行设定。也可以令线圈内圈冷却管路202的长度不同，可以是仅能覆盖一个线圈5内圈502的长度，也可以是同时冷却至少2个相邻设置的线圈5的内圈502的长度，具体根据需要进行设定。
为了便于实现绝缘冷却管路2与定子壳体3的连接，本发明公开了在定子壳体3顶端开设有外圆安装孔9，轴承室8的顶端开设有内圆安装孔10。线圈内圈冷却管路202靠近定子铁芯4轴心的那侧设置有第一延伸块11，第一延伸块11上开设有第一安装孔12，螺钉穿过第一安装孔12与内圆安装孔10，实现线圈内圈冷却管路202与轴承室8的连接。线圈中间冷却管路203与线圈内圈冷却管路202连接的那端向背离铁芯的轴心方向延伸，形成第二延伸块13，第二延伸块13上开设有第二安装孔14，螺钉穿过第二安装孔14与外圆安装孔9，实现线圈中间冷却管路203与定子壳体3的连接。具体地，线圈中间冷却管路203、线圈内圈冷却管路202和线圈外圈冷却管路201一体成型连接。
为了避免螺钉外漏，本发明公开了轴承室8的顶端开设有第一沉槽15，内圆安装孔10开设在第一沉槽15的槽底，第一延伸块11置于第一沉槽15内，螺钉的螺帽置于第一沉槽15内；定子壳体3的顶端开设有第二沉槽16，外圆安装孔9开设在第二沉槽16的槽底，第二延伸块13置于第二沉槽16内，螺钉的螺帽置于第二沉槽16内。
具体地，本发明公开了绝缘冷却管路2为绝缘陶瓷或者尼龙制成，需要说明的是，也可以是其它绝缘、耐腐蚀、不导磁且不导电的材料制成。
本实施例中，以绝缘冷却管路2为绝缘陶瓷制成为例。绝缘冷却管路2 长期工作于180℃变形量不超过0.1mm，同时绝缘冷却管路2的壁厚介于0.5mm～3mm之间。
为了增加绝缘冷却管路2与线圈5的接触面积，进而提高线圈5的冷却效率，本发明公开了绝缘冷却管路2的横截面为矩形，即绝缘冷却管路2为矩形管，也可以是梯形管等其它形状的管。
进一步地，本发明公开了电机冷却系统还包括铁芯冷却通道1，具体地，铁芯冷却通道1开设在定子壳体3上，位于电机定子的定子铁芯4底部，用于冷却定子铁芯4。具体地，铁芯冷却通道1为顶端开口的槽，铁芯冷却通道1轨迹线的形状不限，可以为圆弧形、方形等，也可以多个不同曲线或者直线组合而成等。定子壳体3上还设置有与铁芯冷却通道1的出口和入口分别导通连接的冷却液入口管17和冷却液出口管18。使用时，将铁芯冷却通道1中通入循环冷却液，由于铁芯冷却通道1开设在定子壳体3上，且位于电机定子的定子铁芯4底部，因此，铁芯冷却通道1内的冷却液能够将定子铁芯4散发出的热量循环带出，进一步降低电机温升导致烧毁电机的风险。
进一步地，本发明公开了铁芯冷却通道1包括第一外通道101、第二外通道和内通道102。第一外通道101和第二外通道均围设在内通道102的外部，且第一外通道101的一端与内通道102的一端导通，第一外通道101的另一端为铁芯冷却通道1的入口端。内通道102的另一端与第二外通道的一端导通，第二外通道的另一端为铁芯冷却通道1的出口端。铁芯冷却通道1的入口端和出口端均开设在定子壳体的同一侧。设置第一外通道101、第二外通道和内通道102的模式增加了冷却液在铁芯冷却通道1内的时间，能够充分的将定子铁芯4散发的热量带出去。
需要说明的是，第一外通道101、第二外通道和内通道102的个数及形状不限，可以是任意形状，例如，可以是圆弧形通道、直线通道等。
具体地，本发明公开了第一外通道101、第二外通道和内通道102均为弧形通道，且第一外通道101、第二外通道和内通道102的轴心线均重合。
具体地，定子壳体3内设置有安装轴承的轴承室8，轴承室8的外壁与定子壳体3的内壁连接有第一隔断壁22，第一隔断壁22隔断轴承室8与定子壳体3内壁围设的环形通道。定子壳体3内底部设置有弧形壁24，弧形壁24位于环形通道内，且弧形壁24的首尾分别位于第一隔断壁22的两端，弧形壁24的外侧与定子壳体3的内壁连接有第二隔断壁23，第二隔断壁23隔开弧形壁24的外侧与定子壳体3的内壁围设的通道，铁芯冷却通道1的入口与出口分别位于第二隔断壁23的两端。第一外通道101由第二隔断壁23、定子壳体3的内壁、弧形壁24的外壁(此处是指弧形壁24包含铁芯冷却通道1的入口那侧起到第一隔断壁22的长度)及第一隔断壁22围设围成。内通道102由弧形壁24的内壁、轴承室8的外壁及第一隔断壁22围设而成。第一外通道101由第一隔断壁22、定子壳体3的内壁、弧形壁24的外壁(此处是指弧形壁24包含铁芯冷却通道1的出口那侧起到第一隔断壁22的长度)及由第二隔断壁23围设围成。
实施例三
本发明提供了一种电机定子，包括定子壳体3、定子铁芯4、线圈5和如上述中任意一项实施例中的电机冷却系统。
定子铁芯4的外壁周向和定子壳体3的内壁周向中一者上开设有第一定位 槽6，另一者上设置有与第一定位槽6契合的第一定位凸起7。
进一步地，本发明公开了第一定位槽6和第一定位凸起7的个数为多个，本实施例中，以定子铁芯4的外壁周向上均布第一定位凸起7。定子壳体3的内壁周向上均匀开设第一定位槽6为例，第一定位凸起7置于第一定位槽6内，便于定子铁芯4安装定位。
具体地，定子铁芯4粘在定子壳体3内，避免了在定子铁芯4上开孔导致漏磁。具体地，定子铁芯4为沿圆周开辐射槽的空心圆环。定子铁芯4的主要功能是导磁，即给线圈中产生的磁场提供磁通路径。定子铁芯4由具有导磁性能的金属复合材料制造。
线圈5嵌设在定子铁芯4的铁芯槽内，且线圈5的顶面低于铁芯槽的槽顶，使得线圈5顶面与铁芯槽的槽顶之间形成空隙，便于将绝缘冷却管路2置于该空隙内，且绝缘冷却管路2的顶面低于、平齐或者略高于铁芯槽的槽顶。本实施例以绝缘冷却管路2的底面与线圈5的顶面接触，绝缘冷却管路2的顶面与铁芯槽的槽顶平齐为例。
进一步地，本发明还公开了电机定子还包括轴承室8，轴承室8安装在定子壳体3内，且与定子壳体3同轴心设置。定子壳体3的顶端开设有外圆安装孔9，轴承室8的顶端开设有内圆安装孔10，绝缘冷却管路2的外壁通过螺钉与外圆安装孔9连接，绝缘冷却管路2的内壁通过螺钉与内圆安装孔10连接，便于绝缘冷却管路2的拆装。
进一步地，本发明公开了定子铁芯4的内壁周向和轴承室8的外壁周向中一者上开设有第二定位槽20，另一者上设置有与第二定位槽20契合的第二定位凸起21。
进一步地，本发明公开了第二定位槽20和第二定位凸起21的个数为多个，本实施例中，以定子铁芯4的内壁周向上开设第二定位槽20。轴承室8的外壁周向上均匀设置有第二定位凸起21为例，第二定位凸起21置于第二定位槽20内，便于定子铁芯4安装定位。
本发明公开的电机定子装配时，首先，将定子壳体3至于水平安装台面，开口向上；接着，将定子铁芯4沿轴向入壳，采用胶水粘结壳体与定子铁芯4的安装面19；然后，沿轴向将线圈5嵌入定子铁芯4的铁芯槽内；最后，沿轴向装配绝缘冷却管路2，并用螺钉通过外圆安装孔9、第二安装孔14、内圆安装孔10以及第一安装孔12将绝缘冷却管路2固定在定子壳体3上。
由于本发明提供的电机定子包括上述任意一项实施例中的电机冷却系统，因此，本发明提供的电机冷却系统所具有的有益效果均是本发明提供的电机定子所包含的。
此外，由于定子铁芯4的外壁周向和定子壳体3的内壁周向中一者上开设有第一定位槽6，另一者上设置有与第一定位槽6契合的第一定位凸起7，定子铁芯4的内壁周向和轴承室8的外壁周向中一者上开设有第二定位槽20，另一者上设置有与第二定位槽20契合的第二定位凸起21，便于铁芯的定位安装及防止铁芯转动。
实施例四
本发明提供了一种盘式电机，包括如上述实施例三的电机定子。
由于本发明提供的盘式电机包括上述实施例三中的电机定子，因此，本发明提供的电机定子所具有的有益效果均是本发明提供的盘式电机所包含的。
需要说明的是，本文中表示方位的词，例如顶面、底面等均是以图1的方向进行的设定，仅是为了描述的方便，并不具有其它特定含义。
还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括上述要素的物品或者设备中还存在另外的相同要素。
本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。

Claims (10)

  1. 一种电机冷却系统，用于冷却电机定子，其特征在于，包括绝缘冷却管路；
    所述绝缘冷却管路安装在定子壳体上，且所述绝缘冷却管路的顶面低于或者平齐于定子铁芯的顶面，所述绝缘冷却管路的底面与所述电机定子的线圈接触，用于冷却所述线圈；
    所述定子铁芯的顶面用于与转子相对设置，从而使所述线圈产生的磁场能够与转子永磁体相互作用。
  2. 根据权利要求1所述的电机冷却系统，其特征在于，所述绝缘冷却管路包括线圈外圈冷却管路；
    所述线圈外圈冷却管路与所述线圈的外圈接触，用于冷却所述线圈的外圈。
  3. 根据权利要求2所述的电机冷却系统，其特征在于，所述绝缘冷却管路还包括线圈内圈冷却管路；
    所述线圈内圈冷却管路与所述线圈的内圈接触，用于冷却所述线圈的内圈。
  4. 根据权利要求3所述的电机冷却系统，其特征在于，所述绝缘冷却管路还包括线圈中间冷却管路；
    所述线圈中间冷却管路的两端分别导通所述线圈内圈冷却管路和所述线圈外圈冷却管路，且所述线圈中间冷却管路与所述线圈的中间连接边接触，冷却所述线圈的中间连接边；
    所述线圈的中间连接边是指连接所述线圈的内圈和外圈的连接边。
  5. 根据权利要求4所述的电机冷却系统，其特征在于，所述线圈中间冷却管路、所述线圈内圈冷却管路和所述线圈外圈冷却管路的个数均为多个；
    所述线圈内圈冷却管路和所述线圈外圈冷却管路间隔布置，且每个所述线圈内圈冷却管路仅接触一个所述线圈的内圈，每个所述线圈外圈冷却管路仅接触一个所述线圈的外圈；
    所述线圈中间冷却管路的两端分别导通所述线圈内圈冷却管路的一端和所述线圈外圈冷却管路的一端；
    和/或
    所述绝缘冷却管路为绝缘陶瓷或者尼龙制成；
    和/或
    所述绝缘冷却管路的横截面为矩形。
  6. 根据权利要求1所述的电机冷却系统，其特征在于，还包括铁芯冷却通道；
    所述铁芯冷却通道开设在定子壳体上，位于所述电机定子的定子铁芯底部，用于冷却所述定子铁芯。
  7. 根据权利要求6所述的电机冷却系统，其特征在于，所述铁芯冷却通道包括第一外通道、第二外通道和内通道；
    所述第一外通道和第二外通道均围设在所述内通道的外部，且所述第一外通道的一端与所述内通道的一端导通，所述第一外通道的另一端为所述铁芯冷却通道的入口端；
    所述内通道的另一端与所述第二外通道的一端导通，所述第二外通道的另 一端为所述铁芯冷却通道的出口端；
    所述铁芯冷却通道的入口端和出口端均开设在所述定子壳体的同一侧。
  8. 一种电机定子，包括定子壳体、定子铁芯和线圈，其特征在于，还包括如权利要求1-7中任意一项所述的电机冷却系统；
    所述定子铁芯的外壁周向和所述定子壳体的内壁周向中一者上开设有第一定位槽，另一者上设置有与所述第一定位槽契合的第一定位凸起，所述定子铁芯粘在所述定子壳体内；
    所述线圈嵌设在所述定子铁芯的铁芯槽内，且所述线圈的顶面低于所述铁芯槽的槽顶。
  9. 根据权利要求8所述的电机定子，其特征在于，还包括轴承室；
    所述轴承室安装在所述定子壳体内，且与所述定子壳体同轴心设置；
    所述定子壳体的顶端开设有外圆安装孔，所述轴承室的顶端开设有内圆安装孔，所述绝缘冷却管路的外壁通过螺钉与所述外圆安装孔连接，所述绝缘冷却管路的内壁通过螺钉与所述内圆安装孔连接；
    所述定子铁芯的内壁周向和所述轴承室的外壁周向中一者上开设有第二定位槽，另一者上设置有与所述第二定位槽契合的第二定位凸起；
    和/或
    所述绝缘冷却管路的底面与所述线圈的顶面接触，所述绝缘冷却管路的顶面与所述铁芯槽的槽顶平齐。
  10. 一种盘式电机，其特征在于，包括如权利要求8或9中所述的电机定子。
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