WO2024093547A1 - Ensemble stator de moteur et moteur - Google Patents

Ensemble stator de moteur et moteur Download PDF

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Publication number
WO2024093547A1
WO2024093547A1 PCT/CN2023/119088 CN2023119088W WO2024093547A1 WO 2024093547 A1 WO2024093547 A1 WO 2024093547A1 CN 2023119088 W CN2023119088 W CN 2023119088W WO 2024093547 A1 WO2024093547 A1 WO 2024093547A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
cooling
iron core
oil guide
grooves
Prior art date
Application number
PCT/CN2023/119088
Other languages
English (en)
Chinese (zh)
Inventor
喻泽文
王东雄
郭俊
张经纬
周坤
Original Assignee
东风汽车集团股份有限公司
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
Application filed by 东风汽车集团股份有限公司 filed Critical 东风汽车集团股份有限公司
Publication of WO2024093547A1 publication Critical patent/WO2024093547A1/fr

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Classifications

    • 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
    • H02K1/16—Stator cores with slots for windings
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the present application relates to the field of motors, and in particular to a motor stator assembly and a motor.
  • stator skew slots can effectively reduce motor stator harmonics and reduce motor noise, but the manufacture of stator skew slots is very complicated and requires special tooling, and it is difficult to ensure the angle tolerance of the skew slots.
  • the relevant complex cooling oil channel design can only cool the end of the winding, and cannot cool and lubricate the winding inside the slot, which reduces the efficiency of heat dissipation and cooling.
  • the present application provides a motor stator assembly and a motor to solve the technical problem of how to suppress motor harmonics and reduce motor noise while improving the heat dissipation and cooling efficiency of the motor stator.
  • the present application provides a motor stator assembly, the stator assembly comprising: a plurality of stator iron core sheets, each of which has a central hole and an annular outer wall, and the stator iron core sheets have a plurality of wire slots arranged at intervals along the circumferential direction; along the radial direction, each of the wire slots is close to the annular outer wall
  • the wall surface of the stator core is recessed toward the annular outer wall to form a cooling groove; each of the stator core sheets is stacked in the axial direction, and the wire slots of each of the stator core sheets are connected in the axial direction to form a winding channel, and the cooling grooves of each of the stator core sheets are connected in the axial direction to form a cooling channel, wherein, in the wire slots forming the winding channel, the wall surfaces of each of the wire slots are flush, and in the cooling grooves forming the cooling channel, the wall surfaces of each of the cooling grooves are not flush.
  • the maximum length of one end of the cooling slot in the stator iron core sheet perpendicular to the slot center line is the maximum offset, and the extension direction of the slot center line is the same as the radial direction; there are at least two groups of cooling slots with different maximum offsets in the stator iron core sheet.
  • the cooling grooves in the stator iron core sheet have the same shape, the center line of the cooling groove is parallel to the center line of the wire slot, and the distance between the center line of the cooling groove and the center line of the wire slot is the center distance; there are at least two groups of cooling grooves with different center distances in the stator iron core sheet.
  • the cooling grooves of each of the stator iron core sheets are connected in the axial direction to form a cooling channel, and there are at least two groups of cooling grooves with different center distances in the cooling channel.
  • stator core sheets in the axial direction, are stacked to form a stator core sheet group, and center distances between the cooling grooves of two adjacent stator core sheet groups are different.
  • the center line of each cooling groove in the stator iron core sheet coincides with the center line of the wire slot, and there are at least two groups of cooling grooves with different circumferential sizes in the stator iron core sheet.
  • the cooling grooves of each of the stator iron core sheets are connected in the axial direction to form a cooling channel, and there are at least two groups of cooling grooves with different circumferential sizes in the cooling channel.
  • the end of the cooling groove in the stator iron core sheet closest to the annular outer wall is the maximum recessed end, and the shortest distance from the maximum recessed end to the wire slot is the radial depth; there are at least two groups of cooling grooves with different radial depths in the stator iron core sheet.
  • the cooling grooves of each stator iron core sheet are connected in the axial direction to form a cooling channel, and there are at least two groups of cooling grooves with different radial depths in the cooling channel. groove.
  • an extension direction of the wall surface of the cooling groove in the stator iron core sheet forms an angle with a center line direction of the slot; and at least two groups of cooling grooves with different angles exist in the stator iron core sheet.
  • the cooling grooves of each of the stator iron core sheets are connected in the axial direction to form a cooling channel, and there are at least two groups of cooling grooves with different included angles in the cooling channel.
  • the stator assembly further includes a stator oil guide plate, the stator oil guide plate is connected to the stator iron core sheet, the stator oil guide plate has an oil guide groove, and the oil guide groove is connected to the cooling channel.
  • stator oil guide plate is located between the two stator iron core sheets, and oil guide grooves are provided on both sides of the stator oil guide plate.
  • the oil guide grooves on the same side of the stator oil guide plate are arranged at intervals, and the oil guide grooves on both sides of the stator oil guide plate are arranged alternately.
  • the walls of the cooling grooves of the stator iron core sheets on both sides of the stator oil guide plate are flush.
  • the number of the stator iron core sheets on both sides of the stator oil guide plate is the same, and the cooling grooves of the stator iron core sheets located on both sides of the stator oil guide plate are symmetrical about the stator oil guide plate.
  • An embodiment of the present application also provides a motor, which includes: the above-mentioned stator assembly; a casing, which surrounds and forms an accommodating cavity, and the stator assembly is located in the accommodating cavity; and a rotor assembly, which is located in the center hole of the stator assembly.
  • the stator assembly also includes a stator oil guide plate having an oil guide groove;
  • the casing includes: an oil inlet nozzle and an annular oil channel, the oil inlet nozzle is connected to the annular oil channel, and the oil guide groove is connected to the cooling channel and the annular oil channel.
  • the housing has a plurality of heat sinks.
  • An embodiment of the present application provides a motor stator assembly, which includes: a plurality of stator iron core sheets, each of which has a center hole and an annular outer wall, and the stator iron core sheets have a plurality of wire slots arranged at intervals along the circumferential direction; along the radial direction, the wall surface of each wire slot close to the annular outer wall is recessed toward the annular outer wall to form a cooling groove; each stator iron core sheet is stacked in the axial direction, the wire slots of each stator iron core sheet are connected in the axial direction to form a winding channel, and the cooling grooves of each stator iron core sheet are connected in the axial direction to form a cooling channel, wherein, in the wire slots forming the winding channel, the wall surfaces of each wire slot are flush, and in the cooling grooves forming the cooling channel, the wall surfaces of each cooling groove are not flush.
  • the cooling groove By setting a cooling groove connected to the wire slot on the stator iron sheet, the cooling groove is axially connected to form a cooling channel, and the cooling channel is connected to the winding channel, so that the coolant flows directly into the winding channel.
  • the structure is simple and can be realized by axially stacking only one stator iron sheet. While enhancing the cooling effect, improving the heat dissipation efficiency, ensuring the uniformity of cooling of each winding channel, it reduces the manufacturing difficulty and manufacturing cost; at the same time, the multiple stator iron sheets are rotated at different angles in the axial direction to meet the non-flush setting of the wall surface of the cooling groove in the cooling channel, which can effectively suppress the motor harmonics and reduce the motor noise.
  • the non-flush setting of the wall surface in the cooling channel increases the contact area between the coolant and the stator assembly, and the flow rate of the coolant will slow down when it flows through the channel with a changing cross-section, thereby extending the heat exchange time of the coolant and further improving the cooling efficiency. .
  • FIG1 is a schematic structural diagram of a stator assembly provided in an embodiment of the present application.
  • FIG2 is a schematic structural diagram of a stator assembly from an axial perspective provided in an embodiment of the present application
  • FIG3 is an enlarged schematic diagram of part A in FIG2 ;
  • FIG4 is a schematic structural diagram of a stator core sheet in a stator assembly provided in an embodiment of the present application.
  • FIG5 is an enlarged schematic diagram of part B in FIG4 ;
  • FIG6 is a schematic structural diagram of another stator core sheet in a stator assembly provided in an embodiment of the present application.
  • FIG. 7 is a schematic diagram of the structure of another stator core sheet in the stator assembly provided in an embodiment of the present application. picture;
  • FIG8 is a schematic structural diagram of another stator core sheet in a stator assembly provided in an embodiment of the present application.
  • FIG9 is a schematic structural diagram of a stator oil guide plate in a stator assembly provided in an embodiment of the present application.
  • FIG10 is a schematic structural diagram of another stator assembly provided in an embodiment of the present application.
  • FIG11 is a schematic diagram of the structure of a motor provided in an embodiment of the present application.
  • FIG12 is a cross-sectional view of a motor provided in an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a casing structure of a motor provided in an embodiment of the present application.
  • Motor 10. Stator assembly; 11. Stator iron core sheet; 111. Center hole; 112. Annular outer wall; 113. Wire slot; 1131. Wire slot center line; 114. Cooling slot; 1141. Cooling slot center line; 12. Wire slot channel; 13. Cooling channel; 14. Coil winding; 15. Stator oil guide plate; 151. Oil guide groove; 152. Oil guide wire groove; 153. Oil guide cooling groove; 20. Casing; 21. Accommodating cavity; 22. Oil inlet nozzle; 23. Annular oil channel; 24. Step; 25. Heat sink; 30. Rotor assembly.
  • the terms “first ⁇ second ⁇ " are only used to distinguish different objects, and do not mean that the objects have the same or related points. It should be understood that the directions “above”, “below”, “outside” and “inside” are all directions in normal use.
  • the “right” direction refers to the left-right direction indicated in the specific corresponding schematic diagram, which may or may not be the left-right direction in a normal use state.
  • a motor stator assembly is applicable to any type of motor.
  • the stator assembly can be applicable to a DC motor; the stator assembly can be applicable to an AC motor.
  • the motor having the stator assembly can be applicable to any electrical equipment.
  • the motor can be applicable to a water pump; for example, the motor can also be applicable to a car drive motor.
  • the stator assembly is exemplified.
  • the type of motor and the type of motor equipment used by the motor have no effect on the structure of the stator assembly of the motor.
  • the stator assembly 10 includes a plurality of stator core sheets 11, each of which has a center hole 111 and an annular outer wall 112, and the stator core sheets 11 have a plurality of wire slots 113 spaced apart in the circumferential direction.
  • the motor 1 includes a stator assembly 10, a housing 20, and a rotor assembly 30.
  • the stator assembly 10 includes a stator core formed by axially stacking a plurality of stator core sheets 11. To facilitate axial staggered stacking, a positioning hole may be provided on the annular outer wall 112.
  • the stator core sheets 11 are annular structures with a center hole 111 in the middle.
  • the stator core sheets 11 have a plurality of wire slots 113 spaced apart in the circumferential direction, each of which is connected to the center hole 111.
  • the position where the wire slots 113 are connected to the center hole 111 is a notch.
  • the specific radial dimensions and axial dimensions of the stator core sheets 11 are described herein. There is no limitation.
  • the radial direction is the straight line direction of the circular surface of the stator iron core sheet 11 along the diameter or radius.
  • the axial direction is perpendicular to the radial direction and can be understood as the thickness direction of the stator iron core sheet 11.
  • the number, shape, size and size of the wire slots 113 in the stator iron core sheet 11 are not limited as long as they meet the requirements.
  • the stator iron core sheet 11 has 18 wire slots 113 arranged at equal intervals along the circumferential direction, and the wire slots 113 are square slots with chamfers.
  • each wire groove 113 close to the annular outer wall 112 is recessed toward the annular outer wall 112 to form a cooling groove 114.
  • the wall surface of each wire groove 113 close to the annular outer wall 112 in the stator iron core sheet 11 is recessed toward the annular outer wall 112, and the space area formed by the recess is the cooling groove 114.
  • the cooling groove 114 provides space for the flow of coolant, and the coolant can assist in heat dissipation and also have a lubrication effect.
  • the wire groove 113 is connected to the cooling groove 114.
  • the specific shape and size of the cooling groove 114 are not limited here, and can be determined according to actual conditions.
  • cooling grooves 114 in the stator iron core sheet 11 are not completely the same.
  • the non-completeness here includes different sizes of the cooling grooves 114, or different shapes of the cooling grooves 114, or different positions of the cooling grooves 114 recessed relative to the wire grooves 113.
  • the specific structure will be described in detail below, and is only exemplified here.
  • the circumferential dimensions of adjacent cooling slots 114 in the stator iron core sheet 11 are different; for example, the radial dimensions of adjacent cooling slots 114 in the stator iron core sheet 11 are different; for example, the shapes and dimensions of adjacent cooling slots 114 in the stator iron core sheet 11 are the same, the distance between the cooling slot center line 1141 and the slot center line 1131 of the slot 113 is the center distance, and the center distances of two adjacent cooling slots 114 are different.
  • Each stator iron core sheet 11 is stacked axially, and the line slots 113 of each stator iron core sheet 11 are connected in the axial direction to form a line slot channel 12, and the cooling slots 114 of each stator iron core sheet 11 are connected in the axial direction to form a cooling channel 13.
  • the stator iron core sheet 11 is an annular structure, and a plurality of stator iron core sheets 11 are axially stacked to form a stator iron core group. It should be noted that in the same group of stator iron core sheets, the line slots 113 of each axially adjacent stator iron core sheets 11 can be completely identical, and similarly, the cooling slots 114 of each adjacent stator iron core sheets 11 can also completely overlap.
  • stator iron core sheets are stacked axially to form a stator core.
  • the specific number of axially stacked stator iron core sheets 11 is not limited.
  • the stator core has 6 groups of stator core chips, each of which has 30 stator core chips 11, 30 stator core chips 11 are axially stacked to form a stator core chip group, 6 groups of stator core chips are axially stacked to form a stator core, the wire slots 113 of the stator core chips 11 of the 6 groups of stator core chips are connected in the axial direction to form a wire slot channel 12, the wire slot channel 12 provides space for the coil winding 14, and the cooling slots 114 of the 6 groups of stator core chips are connected in the axial direction to form a cooling channel 13, and the cooling channel 13 is for cooling
  • the flow of liquid provides space, so that the coolant can flow through each stator iron core sheet 11, so that the stator assembly 10 dissipates heat evenly.
  • each wire slot channel 12 has coolant, thereby realizing uniform heat dissipation of the stator assembly 10. After flowing through the coil winding 14, the coolant flows out through the two ends of the wire slot channel 12.
  • each wire slot channel 12 forms a shower effect, which can evenly cool the copper wire at the end of the coil winding 14, ensure the cooling uniformity of the end of the coil winding 14 in the circumferential direction, avoid local overheating of the coil winding 14, and further improve the cooling effect.
  • the specific structural form of the coolant introduction into the cooling channel 13 is not limited here, and any structure that can introduce the coolant into the cooling channel 13 meets the requirements.
  • the end of the cooling channel 13 is directly connected to the oil inlet 22 of the motor 1, and the oil inlet 22 is the inlet for introducing the coolant into the motor 1.
  • the stator assembly 10 also includes a stator oil guide plate 15, and the stator oil guide plate 15 has an oil guide groove 151.
  • the coolant of the oil inlet nozzle 22 of the motor 1 is introduced into the cooling channel 13 through the oil guide groove 151.
  • each stator iron sheet 11 is stacked in the axial direction, and the wall surfaces of the coil winding 14 formed in the axial direction by the wire slots 113 in each stator iron sheet 11 are flush, that is, the walls of two adjacent wire slots 113 in the axial direction are in the same plane.
  • the wall surfaces of the cooling channel 13 formed in the axial direction by the cooling slots 114 in each stator iron sheet 11 are not flush, that is, there are at least a part of the stator iron sheets 11 in the axial direction.
  • the wall surface of the cooling groove 114 is not in the same plane as the wall surfaces of the other cooling grooves 114 in the cooling channel 13.
  • the non-flush setting of the wall surfaces of the cooling grooves 114 in each cooling channel 13 can effectively suppress motor harmonics and reduce motor noise. At the same time, it can increase the contact area between the coolant and the stator assembly 10 in the cooling channel 13, thereby improving the cooling efficiency. Any arrangement method that can meet the non-flush setting of the wall surfaces of the cooling grooves 114 in each cooling channel 13 meets the requirements.
  • the shapes of the cooling grooves 114 in the stator iron core sheet 11 are the same, the cooling groove center line 1141 is parallel to the line groove center line 1131, and the distance between the cooling groove center line 1141 and the line groove center line 1131 is the center distance; there are at least two groups of cooling grooves 114 with different center distances in the stator iron core sheet 11, and the specific structure will be described in detail below.
  • the center line 1141 of each cooling slot in the stator core sheet 11 coincides with the center line 1131 of the line slot, and there are at least two groups of cooling slots 114 with different circumferential sizes in the stator core sheet 11 .
  • the specific structure will be described in detail below.
  • An embodiment of the present application provides a motor stator assembly, which includes: a plurality of stator iron core sheets, each of which has a center hole and an annular outer wall, and the stator iron core sheets have a plurality of wire slots arranged at intervals along the circumferential direction; along the radial direction, the wall surface of each wire slot close to the annular outer wall is recessed toward the annular outer wall to form a cooling groove; each stator iron core sheet is stacked in the axial direction, the wire slots of each stator iron core sheet are connected in the axial direction to form a winding channel, and the cooling grooves of each stator iron core sheet are connected in the axial direction to form a cooling channel, wherein, in the wire slots forming the winding channel, the wall surfaces of each wire slot are flush, and in the cooling grooves forming the cooling channel, the wall surfaces of each cooling groove are not flush.
  • the cooling grooves are axially connected to form a cooling channel, and the cooling channel is connected with the winding channel so that the coolant flows directly into the winding channel.
  • the structure is simple and can be realized by axially stacking only one type of stator iron sheets.
  • the cooling effect is enhanced, the heat dissipation efficiency is improved, the uniformity of cooling of each winding channel is ensured, and the manufacturing difficulty and manufacturing cost are reduced.
  • the plurality of stator iron sheets are rotated at different angles in the axial direction to meet the non-flush setting of the wall surface of the cooling groove in the cooling channel, which can effectively suppress the motor harmonics and reduce the motor noise.
  • the non-flush setting of the wall surface in the cooling channel increases the contact area between the coolant and the stator assembly, and the coolant flows through the channel with a changing cross-section.
  • the flow rate will slow down, thus extending the heat exchange time of the coolant and further improving the cooling efficiency.
  • the maximum length of one end of the cooling slot 114 in the stator iron core sheet 11 perpendicular to the slot center line 1131 is the maximum offset, and the extension direction of the slot center line 1131 is the same as the radial direction; there are at least two groups of cooling slots 114 with different maximum offsets in the stator iron core sheet 11.
  • the stator iron core sheet 11 has a plurality of line slots 113 spaced apart along the circumferential direction, and each line slot 113 is exactly the same, each line slot 113 is connected to the cooling slot 114, and each cooling slot 114 is not exactly the same.
  • the maximum length of one end of the cooling slot 114 perpendicular to the line slot center line 1131 is the maximum offset.
  • the line slot center line 1131 can be understood as the middle line of the line slot 113, and the extension direction of the line slot center line 1131 is the same as the radial direction.
  • the line slot 113 can be symmetrical about the line slot center line 1131; the shape of the cooling slot 114 is not limited, and the cooling slot 114 can be symmetrical about the line slot center line 1131 or not symmetrical about the line slot center line 1131.
  • the maximum offset can be understood as a vertical line perpendicular to the line slot center line 1131 at any position of the cooling slot 114 in a group of cooling slots 114 connected to the line slots 113, and the vertical line with the largest length is the maximum offset. There are at least two groups of cooling slots 114 with different maximum offsets in the stator core sheet 11.
  • any structure that can satisfy the requirement of two or more groups of cooling slots 114 with different maximum offsets in the stator core sheet 11 meets the requirement.
  • the distribution form of the structures of the different cooling slots 114 on the stator core sheet 11 is not limited, and they can be distributed at intervals or randomly. Exemplarily, there are three cooling slots 114 with different shapes in the stator core sheet 11, and the maximum offsets of the three cooling slots 114 with different shapes are all different; Exemplarily, there are three cooling slots 114 with different sizes in the stator core sheet 11, and the maximum offsets of the three cooling slots 114 with different sizes are all different.
  • the shapes of the cooling slots 114 in the stator core sheet 11 are the same, the cooling slot centerline 1141 is parallel to the line slot centerline 1131, and the distance between the cooling slot centerline 1141 and the line slot centerline 1131 is the center distance; there are at least two groups of cooling slots 114 with different center distances in the stator core sheet 11.
  • the line slot centerline 1131 is parallel to the line slot centerline 1131.
  • the cooling slot center line 1141 can be located on one side of the line slot center line 1131, that is, the cooling slot center line 1141 does not coincide with the line slot center line 1131, the cooling slot center line 1141 is parallel to the line slot center line 1131, and the distance between the two is the center distance. By controlling the difference in center distance, the difference in maximum offset distance is ensured. For example, there are three different cooling slots 114 in the stator iron core sheet 11. The first cooling slot center line 1141 is biased towards the line slot center line 1131.
  • the center distance is L1
  • the second cooling slot centerline 1141 coincides with the line slot centerline 1131
  • the center distance is L2, that is, L2 is equal to
  • the third cooling slot centerline 1141 is biased to the side of the line slot centerline 1131 opposite to the first
  • the center distance is L3
  • the values of L1 and L3 can be the same or different
  • the three different cooling slots 114 in the stator iron core sheet 11 can be alternately circumferentially circulated, that is, the center distances are L1, L2, and L3, and they are circulated in sequence.
  • the cooling grooves 114 of each stator iron core sheet 11 are connected in the axial direction to form a cooling channel 13, and there are at least two groups of cooling grooves 114 with different center distances in the cooling channel 13.
  • the cooling channel 13 is formed by the cooling grooves 114 of each stator iron core sheet 11 being stacked in the axial direction.
  • stator iron core sheet groups when multiple stator iron core sheet groups are stacked in the axial direction, at least part of the number of stator iron core sheet groups are deflected in the axial direction.
  • the specific degree of deflection is not required, and the requirements that the wall surface of the coil winding 14 formed in the axial direction by the wire slots 113 in each stator iron core sheet 11 is flush, and the wall surface of the cooling channel 13 formed in the axial direction by the cooling grooves 114 in each stator iron core sheet 11 is non-flush.
  • the stator core has 6 groups of stator core sheets, which are group 1 to group 6 in the axial direction, each stator core sheet group has 30 stator core sheets 11, 48 line slots 113 are arranged in the circumferential direction in the stator core sheets 11, and each line slot 113 is connected to the cooling slot 114, that is, the stator core sheets 11 have 48 cooling slots 114 in the circumferential direction, and there are three cooling slots 114 with different center distances in the stator core sheets 11.
  • the three cooling slots 114 are circumferentially arranged with center distances of L1, L2, and L3, and are cycled 16 times in sequence.
  • One of the cooling slots 114 is set as cooling slot No. 1 114 with a center distance of L1.
  • the cooling groove 114 on the adjacent side is the No.
  • the No. 1 cooling groove 114 of the first group of stator iron core sheets 11 corresponds to the No. 1 cooling groove 114 of the second group of stator iron core sheets 11
  • the No. 1 cooling groove 114 of the second group of stator iron core sheets 11 corresponds to the No. 2 cooling groove 114 of the third group of stator iron core sheets 11
  • the No. 2 cooling groove 114 of the third group of stator iron core sheets 11 corresponds to the No. 4 cooling groove 114 of the fourth group of stator iron core sheets 11.
  • the cooling groove No. 1 cooling groove 114 of the first group of stator iron core sheets 11 corresponds to the No. 1 cooling groove 114 of the second group of stator iron core sheets 11
  • the No. 1 cooling groove 114 of the second group of stator iron core sheets 11 corresponds to the No. 2 cooling groove 114 of the third group of stator iron core sheets 11
  • the No. 2 cooling groove 114 of the third group of stator iron core sheets 11 corresponds to the No. 4 cooling groove 114 of the fourth group of stator
  • the cooling groove No. 2 114 of the stator iron core sheet 11 corresponds
  • the cooling groove No. 2 114 of the fourth group of stator iron core sheets 11 corresponds to the cooling groove No. 3 114 of the fifth group of stator iron core sheets 11
  • the cooling groove No. 3 114 of the fifth group of stator iron core sheets 11 corresponds to the cooling groove No. 3 114 of the sixth group of stator iron core sheets 11, that is, the cooling channel 13 formed axially from the cooling groove No. 1 14 of the first group of stator iron core sheets 11 is composed of cooling grooves 114 with center distances L1, L1, L2, L2, L3, and L3 in sequence.
  • a plurality of stator core sheets 11 are stacked to form a stator core sheet group, and the center distances of the cooling slots 114 of two adjacent stator core sheet groups are different.
  • each stator core sheet group can be deflected in the axial direction to meet the different center distances of the cooling slots 114 of two adjacent stator core sheet groups.
  • the specific degree of deflection is not limited.
  • the number of stator core sheets 11 and the arrangement of the cooling slots 114 are the same as those in the previous embodiment. There are also three cooling slots 114 with different center distances.
  • the three cooling slots 114 are circumferentially arranged with center distances of L1, L2, and L3, and are cycled 16 times in sequence.
  • the No. 1 cooling slot 114 of the first group of stator core sheets 11 corresponds to the No. 2 cooling slot 114 of the second group of stator core sheets 11.
  • the second group of stator core sheets The cooling groove No. 2 114 of the stator core sheet 11 corresponds to the cooling groove No. 3 114 of the stator core sheet 11 of the third group
  • the cooling groove No. 3 114 of the stator core sheet 11 of the third group corresponds to the cooling groove No. 2 114 of the stator core sheet 11 of the fourth group
  • the cooling groove No. 1 114 of the stator core sheet 11 of the fourth group corresponds to the cooling groove No. 1 114 of the stator core sheet 11 of the fifth group
  • the cooling groove No. 1 114 of the stator core sheet 11 of the fifth group corresponds to the cooling groove No. 2 114 of the stator core sheet 11 of the sixth group, that is, the cooling channel 13 formed in the axial direction from the cooling groove No. 1 114 of the stator core sheet 11 of the first group is composed of cooling grooves 114 with center distances L1, L2, L3, L2, L1, and L2 in sequence.
  • each cooling slot centerline 1141 in the stator core sheet 11 coincides with the line slot centerline 1131, and there are at least two groups of cooling slots 114 with different circumferential dimensions in the stator core sheet 11.
  • the circumferential dimension can be understood as the circumferential width of the cooling slot 114, and its line segment is an arc at one end.
  • the line slot centerline 1131 is located in the middle of the line slot 113, and the cooling slot centerline 1141 coincides with the line slot centerline 1131.
  • the specific shape of the cooling slot 114 is not limited. By using different circumferential dimensions, the cooling slots 114 can be used to obtain the cooling slots 114 of the stator core sheet 11.
  • the cooling grooves 114 have different circumferential sizes, thereby ensuring different maximum offsets. Exemplarily, there are three different cooling grooves 114 in the stator iron core sheet 11, the circumferential size of the first cooling groove 114 is A1, the circumferential size of the second cooling groove 114 is A2, and the circumferential size of the third cooling groove 114 is A3, wherein the values of A1, A2 and A3 are all different.
  • the three different cooling grooves 114 in the stator iron core sheet 11 can circumferentially alternate, that is, the circumferential sizes A1, A2, and A3 are circulated in sequence.
  • the cooling grooves 114 of each stator iron core sheet 11 are connected in the axial direction to form a cooling channel 13, and there are at least two groups of cooling grooves 114 with different circumferential sizes in the cooling channel 13.
  • the cooling channel 13 is formed by axially stacking the cooling grooves 114 of each stator iron core sheet 11. In order to meet the non-flush setting of the wall surface of the cooling groove 114 in each cooling channel 13, thereby effectively suppressing the motor harmonics and reducing the motor noise, there are at least two groups of cooling grooves 114 with different circumferential sizes in the cooling channel 13.
  • stator iron core sheet groups when multiple stator iron core sheet groups are stacked in the axial direction, at least part of the number of stator iron core sheet groups are deflected in the axial direction.
  • the specific degree of deflection is not required, and the requirements that the wall surface of the coil winding 14 formed in the axial direction by the wire slots 113 in each stator iron core sheet 11 is flush, and the wall surface of the cooling channel 13 formed in the axial direction by the cooling grooves 114 in each stator iron core sheet 11 is non-flush.
  • the stator core has 6 groups of stator core sheets, which are group 1 to group 6 in the axial direction.
  • each line slot 113 is connected to the cooling slot 114, that is, the stator core sheet 11 has 48 cooling slots 114 along the circumferential direction, and there are three cooling slots 114 with different center distances in the stator core sheet 11.
  • the three cooling slots 114 are arranged along the circumferential direction according to the circumferential size. A1, A2, A3, cycle 16 times in sequence, set one of the cooling grooves 114 as No. 1 cooling groove 114, circumferential dimension A1, the cooling groove 114 on the adjacent side is No. 2 cooling groove 114, circumferential dimension A2, one side of No. 2 cooling groove 114 is No.
  • cooling groove 114 circumferential dimension A3, in the axial direction
  • No. 1 cooling groove 114 of the first group of stator iron core sheets 11 corresponds to No. 2 cooling groove 114 of the second group of stator iron core sheets 11
  • No. 2 cooling groove 114 of the second group of stator iron core sheets 11 corresponds to No. 3 cooling groove 114 of the third group of stator iron core sheets 11
  • the cooling groove No. 3 114 of the third group of stator iron core sheets 11 corresponds to the cooling groove No. 3 114 of the fourth group of stator iron core sheets 11
  • the cooling groove No. 3 114 of the fourth group of stator iron core sheets 11 corresponds to the cooling groove No. 2 114 of the fifth group of stator iron core sheets 11, and the cooling groove No.
  • the cooling groove No. 1 114 of the sixth group of stator iron core sheets 11 corresponds to the cooling groove No. 1 114 of the sixth group of stator iron core sheets 11, that is, the cooling channel 13 formed axially from the cooling groove No. 1 14 of the first group of stator iron core sheets 11 is composed of cooling grooves 114 with circumferential dimensions A1, A2, A3, A3, A2, and A1 in sequence.
  • the end of the cooling groove 114 in the stator core sheet 11 closest to the annular outer wall 112 is the maximum recessed end, and the shortest distance from the maximum recessed end to the line slot 113 is the radial depth; there are at least two groups of cooling grooves 114 with different radial depths in the stator core sheet 11.
  • the stator core sheet 11 has a plurality of line slots 113 spaced apart along the circumferential direction, each line slot 113 is exactly the same, each line slot 113 is connected to the cooling groove 114, each cooling groove 114 is not exactly the same, the end of the cooling groove 114 closest to the annular outer wall 112 is the maximum recessed end, and the shortest distance from the maximum recessed end to the line slot 113 is the radial depth; the maximum recessed end can be understood as a point on the cooling groove 114 with the shortest distance from the annular outer wall 112, and the shortest distance from this point to the line slot 113 connected to the cooling groove 114 is the radial depth, and there are at least two groups of cooling grooves 114 with different radial depths in the stator core sheet 11.
  • any structure that can satisfy the requirement that there are two or more groups of cooling grooves 114 with different radial depths in the stator core sheet 11 meets the requirements.
  • the distribution form of the specific cooling grooves 114 on the stator core sheet 11 is not limited, and can be distributed at intervals or randomly. For example, there are three different cooling grooves 114 in the stator core sheet 11.
  • the radial depth of the first cooling groove 114 is B1, the radial depth of the second cooling groove 114 is B2, and the radial depth of the third cooling groove 114 is B3, wherein the values of B1, B2 and B3 are all different, and the three different cooling grooves 114 in the stator iron core sheet 11 can be circulated alternately along the circumferential direction, that is, the radial depths B1, B2, and B3 are circulated in sequence.
  • the cooling grooves 114 of each stator iron core sheet 11 are connected in the axial direction to form a cooling channel 13, and there are at least two groups of cooling grooves 114 with different radial depths in the cooling channel 13.
  • the cooling channel 13 is formed by axially stacking the cooling grooves 114 of each stator iron core sheet 11. In order to meet the non-flush setting of the wall surface of the cooling groove 114 in each cooling channel 13, thereby effectively suppressing the motor harmonics and reducing the motor noise, there are at least two groups of cooling grooves 114 with different radial depths in the cooling channel 13.
  • stator iron core sheet groups when multiple stator iron core sheet groups are stacked in the axial direction, at least part of the number of stator iron core sheet groups are deflected in the axial direction.
  • the specific degree of deflection is not required, and the requirements that the wall surface of the coil winding 14 formed in the axial direction by the wire slots 113 in each stator iron core sheet 11 is flush, and the wall surface of the cooling channel 13 formed in the axial direction by the cooling grooves 114 in each stator iron core sheet 11 is non-flush.
  • the stator core has 6 groups of stator core sheets, which are group 1 to group 6 in the axial direction.
  • each line slot 113 is connected to the cooling slot 114, that is, the stator core sheet 11 has 48 cooling slots 114 in the circumferential direction, and there are three cooling slots 114 with different radial depths in the stator core sheet 11.
  • the three cooling slots 114 are cycled 16 times in sequence along the circumferential direction according to the radial depths B1, B2, and B3.
  • One of the cooling slots 114 is set as cooling slot No. 1 14 with a radial depth of B1, and the cooling slot 114 on the adjacent side is cooling slot No. 2 114 with a radial depth of B2.
  • One side of cooling slot No. 2 114 is cooling slot No.
  • the No. 1 cooling groove 114 of the first group of stator iron core sheets 11 corresponds to the No. 2 cooling groove 114 of the second group of stator iron core sheets 11
  • the No. 2 cooling groove 114 of the second group of stator iron core sheets 11 corresponds to the No. 3 cooling groove 114 of the third group of stator iron core sheets 11
  • the No. 3 cooling groove 114 of the third group of stator iron core sheets 11 corresponds to the No. 3 cooling groove 114 of the fourth group of stator iron core sheets 11
  • the No. 3 cooling groove 114 of the fourth group of stator iron core sheets 11 corresponds to the No. 2 cooling groove 114 of the fifth group of stator iron core sheets 11, and the No.
  • cooling groove 114 of the fifth group of stator iron core sheets 11 corresponds to the No. 1 cooling groove 114 of the sixth group of stator iron core sheets 11, that is, the cooling channel 13 is formed in the axial direction from the No. 1 cooling groove 114 of the first group of stator iron core sheets 11.
  • the second cooling groove 114 is composed of radial depths B1, B2, B3, B3, B2, B1.
  • the extension direction of the wall of the cooling slot 114 in the stator core sheet 11 is at an angle to the center line of the slot; at least two groups of cooling slots 114 with different angles are present in the stator core sheet 11.
  • the stator core sheet 11 has a plurality of slots 113 spaced apart along the circumferential direction, each slot 113 is completely identical, each slot 113 is connected to the cooling slot 114, and each cooling slot 114 is not completely identical.
  • the extension direction of the wall of the cooling slot 114 in the stator core sheet 11 is at an angle to the center line 1131 of the slot.
  • the extension direction of the wall of the cooling slot 114 can be understood as a direction approaching the annular outer wall 112.
  • the center line 1131 of the slot is at an angle to the center line 1141 of the cooling slot.
  • At least two groups of cooling slots 114 with different angles are present in the stator core sheet 11. Any structure of cooling grooves 114 that can satisfy the requirement of having two or more groups of different angles in the stator core sheet 11 meets the requirements.
  • the distribution form of the specific structures of different cooling grooves 114 on the stator core sheet 11 is not limited, and can be distributed at intervals or randomly.
  • the extension direction of the wall of the first cooling groove 114 has an angle of C1 with the center line 1131 of the line slot
  • the extension direction of the wall of the second cooling groove 114 has an angle of C2 with the center line 1131 of the line slot
  • the extension direction of the wall of the third cooling groove 114 has an angle of C3 with the center line 1131 of the line slot, wherein the values of C1, C2 and C3 are all different
  • the three different cooling grooves 114 in the stator core sheet 11 can be alternately circumferentially circulated, that is, the angles C1, C2, and C3 are circulated in sequence.
  • the cooling grooves 114 of each stator iron core sheet 11 are connected in the axial direction to form a cooling channel 13, and there are at least two groups of cooling grooves 114 with different angles in the cooling channel 13.
  • the cooling channel 13 is formed by axially stacking the cooling grooves 114 of each stator iron core sheet 11. In order to meet the non-flush setting of the wall surface of the cooling groove 114 in each cooling channel 13, thereby effectively suppressing the motor harmonics and reducing the motor noise, there are at least two groups of cooling grooves 114 with different angles in the cooling channel 13.
  • stator core sheet groups when a plurality of stator iron core sheet groups are stacked in the axial direction, at least part of the number of stator iron core sheet groups are deflected in the axial direction.
  • the specific degree of deflection is not required, which satisfies that the wall surface of the coil winding 14 formed by the slots 113 in each stator iron core sheet 11 in the axial direction is flush, and each The cooling grooves 114 in the stator core sheet 11 are not flush with the wall of the cooling channel 13 formed in the axial direction.
  • the stator core has 6 groups of stator core sheets, which are the 1st to the 6th groups in the axial direction.
  • each line slot 113 is connected to the cooling groove 114, that is, the stator core sheet 11 has 48 cooling grooves 114 in the circumferential direction.
  • the three cooling grooves 114 are cycled 16 times in sequence along the circumferential direction according to the angles C1, C2, and C3.
  • One of the cooling grooves 114 is set as cooling groove No. 1 14, and the angle between the extension direction of the wall of the cooling groove 114 and the axial direction is C1.
  • the cooling groove 114 on the adjacent side is cooling groove No. 2 114 with an angle C2.
  • One side of cooling groove No. 2 114 is cooling groove No.
  • the first group of stator core sheets The No. 1 cooling groove 114 of the chip 11 corresponds to the No. 2 cooling groove 114 of the second group of stator iron core sheets 11, the No. 2 cooling groove 114 of the second group of stator iron core sheets 11 corresponds to the No. 3 cooling groove 114 of the third group of stator iron core sheets 11, the No. 3 cooling groove 114 of the third group of stator iron core sheets 11 corresponds to the No. 3 cooling groove 114 of the fourth group of stator iron core sheets 11, the No. 3 cooling groove 114 of the fourth group of stator iron core sheets 11 corresponds to the No. 2 cooling groove 114 of the fifth group of stator iron core sheets 11, and the No.
  • cooling groove 114 of the fifth group of stator iron core sheets 11 corresponds to the No. 1 cooling groove 114 of the sixth group of stator iron core sheets 11, that is, the cooling channel 13 formed in the axial direction from the No. 1 cooling groove 114 of the first group of stator iron core sheets 11 is composed of cooling grooves 114 with angles C1, C2, C3, C3, C2, and C1 in sequence.
  • the stator assembly 10 further includes a stator oil guide plate 15, the stator oil guide plate 15 is connected to the stator iron core sheet 11, and the stator oil guide plate 15 has an oil guide groove 151, and the oil guide groove 151 is connected to the cooling channel 13.
  • the stator oil guide plate 15 has an oil guide groove 152 that is the same as the groove 113 of the stator iron core sheet 11, and an oil guide cooling groove 153 that is the same as the cooling groove 114 of the stator iron core sheet 11.
  • stator oil guide plate 15 and the stator iron core sheet 11 are axially stacked, the oil guide groove 152 of the stator oil guide plate 15 overlaps with the groove 113 of the stator iron core sheet 11 to form a groove channel 12 together, and the oil guide cooling groove 153 of the stator oil guide plate 15 may overlap with the cooling groove 114 of the stator iron core sheet 11, or may not overlap.
  • the oil guide cooling groove 153 of the oil plate 15 and the cooling groove 114 of the stator iron core sheet 11 together form a cooling channel 13.
  • the stator oil guide plate 15 can be arranged at the end of the stator iron core formed by multiple stator iron core sheets 11, and can also be arranged between multiple stator iron core sheets 11.
  • the connection method between the stator oil guide plate 15 and the stator iron core sheet 11 is not limited.
  • the stator oil guide plate 15 and the stator iron core sheet 11 can be bonded or connected by welding.
  • the stator oil guide plate 15 has an oil guide groove 151, and the size of the oil guide groove 151 is not limited.
  • the oil guide groove 151 is arranged radially.
  • the oil guide groove 151 can connect the cooling channel 13 with the space outside the annular outer wall 112 of the stator iron core sheet 11, and the coolant outside the annular outer wall 112 flows into the cooling channel 13 through the oil guide groove 151, and then the coolant flows into the wire slot channel 12 through the cooling channel 13 to cool the coil winding 14.
  • the stator oil guide plate 15 is located between the two stator iron core sheets 11, and both sides of the stator oil guide plate 15 are provided with oil guide grooves 151.
  • the stator oil guide plate 15 is arranged between the two stator iron core sheets 11, and after the coolant flows into the cooling channel 13 through the oil guide grooves 151, it can flow axially to both ends of the cooling channel 13, shortening the flow path of the coolant, accelerating the circulation of the coolant, and improving the heat dissipation efficiency.
  • both sides of the stator oil guide plate 15 are provided with oil guide grooves 151, and the specific arrangement form is not limited.
  • the oil guide grooves 151 on the same side of the stator oil guide plate 15 are arranged at intervals, and the oil guide grooves 151 on both sides of the stator oil guide plate 15 are arranged alternately, thereby improving the uniformity of cooling.
  • the wall surfaces of the cooling grooves 114 of the stator core sheets 11 on both sides of the stator oil guide plate 15 are flush.
  • the stator oil guide plate 15 has an oil guide cooling groove 153 that is the same as the cooling groove 114 of the stator core sheets 11, and the wall surfaces of the cooling grooves 114 of the stator core sheets 11 on both sides of the stator oil guide plate 15 are flush, that is, the oil guide cooling grooves 153 of the stator oil guide plate 15 are flush with the wall surfaces of the cooling grooves 114 of the stator core sheets 11 on both sides of the stator oil guide plate 15, so that the coolant in the oil guide groove 151 is quickly introduced into the cooling channel 13.
  • the number of stator core sheets 11 on both sides of the stator oil guide plate 15 is the same, and the cooling grooves 114 of the stator core sheets 11 on both sides of the stator oil guide plate 15 are symmetrical about the stator oil guide plate 15.
  • stator oil guide plate 15 is located in the middle of a plurality of stator core sheets 11, the number of stator core sheets 11 on both sides of the stator oil guide plate 15 is the same, the distance from the coolant entering through the oil guide groove 151 to both ends of the cooling channel 13 is the same, and the cooling grooves 114 of the stator core sheets 11 on both sides of the stator oil guide plate 15 are symmetrical about the stator oil guide plate 15, ensuring that after the coolant enters the cooling channel 13, the paths through which the coolant flows to both ends of the cooling channel 13 are exactly the same, and the cooling cycle time of the coil windings 14 on both sides of the stator oil guide plate 15 is the same, thereby ensuring the uniformity of cooling on both sides of the stator oil guide plate 15.
  • the present embodiment provides a motor, which is suitable for a stator assembly as shown in any one of Figures 1 to 10.
  • the motor 1 includes a stator assembly 10, a housing 20 and a rotor assembly 30.
  • the housing 20 surrounds and forms a receiving cavity 21, and the stator assembly 10 is located in the receiving cavity 21; the rotor assembly 30 is located in the center hole 111 of the stator assembly 10.
  • the specific shape and size of the housing 20 are not limited.
  • the housing 20 surrounds and forms a receiving cavity 21, and the receiving cavity 21 is used to accommodate the stator assembly 10 and the rotor assembly 30.
  • the stator assembly 10 is connected to the housing 20.
  • a step 24 is set on the inner wall of the housing 20.
  • the stator iron sheet 11 is axially limited during the installation of the stator iron sheet 11.
  • the specific size of the step 24 is not limited, and it can meet the actual requirements.
  • a plurality of stator core sheets 11 are axially stacked to form a stator core.
  • the central holes 111 of the plurality of stator core sheets 11 form a central channel.
  • the rotor assembly 30 is located in the central channel formed by the central holes 111 of the plurality of stator core sheets 11 .
  • the stator assembly 10 further includes a stator oil guide plate 15, the stator oil guide plate 15 has an oil guide groove 151, the housing 20 includes an oil inlet nozzle 22 and an annular oil passage 23, the oil inlet nozzle 22 is connected to the annular oil passage 23, and the oil guide groove 151 is connected to the cooling channel 13 and the annular oil passage 23.
  • the housing 20 is provided with an annular oil passage 23, the annular oil passage 23 is a groove formed by a depression inside the housing 20, and is surrounded along the inside of the housing 20 for filling the coolant, and the depression depth of the annular oil passage 23 is 1.2mm.
  • the length and axial width are not limited, as long as they meet the requirements.
  • the annular oil passage 23 is connected to the oil inlet nozzle 22, and the coolant enters the annular oil passage 23 of the motor 1 through the oil inlet nozzle 22, and the annular oil passage 23 is filled with coolant.
  • One end of the oil guide groove 151 of the stator oil guide plate 15 is connected to the annular oil passage 23, and the other end of the oil guide groove 151 is connected to the cooling channel 13, so that the coolant in the annular oil passage 23 is uniformly introduced into the cooling channel 13 through each oil guide groove 151, so that each cooling channel 13 is filled with coolant, thereby ensuring the uniformity of cooling of the coil winding 14 in the overall wire slot channel 12.
  • the housing 20 in order to assist the motor 1 in dissipating heat, has a plurality of heat sinks 25 .
  • the specific number and arrangement of the heat sinks 25 are not limited, and the need to assist the motor 1 in dissipating heat can be met.
  • axial heat sinks are arranged on the outer surface of the housing 20 to assist in heat dissipation.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

La présente demande se rapporte au domaine des moteurs, et concerne un ensemble stator de moteur et un moteur. L'ensemble stator de moteur comprend une pluralité de tôles de stator, chaque tôle de stator étant pourvue d'un trou central et d'une paroi externe annulaire, et la tôle de stator étant pourvue d'une pluralité de rainures de fil agencées à des intervalles dans une direction circonférentielle ; dans une direction radiale, une surface de paroi de chaque rainure de fil proche de la paroi externe annulaire est évidée vers la paroi externe annulaire pour former une rainure de refroidissement ; les rainures de fil des tôles de stator sont en communication les unes avec les autres dans la direction axiale pour former un canal d'enroulement, et les rainures de refroidissement des tôles de stator sont en communication les unes avec les autres dans la direction axiale pour former un canal de refroidissement, les surfaces de paroi des rainures de fil formant le canal d'enroulement étant alignées les unes avec les autres, et les surfaces de paroi des rainures de refroidissement formant le canal de refroidissement n'étant pas alignées les unes avec les autres. Les rainures de refroidissement sont disposées et reliées pour former le canal de refroidissement, de telle sorte qu'une dissipation de chaleur peut être effectuée efficacement ; et les surfaces de paroi des rainures de refroidissement ne sont pas alignées l'une avec l'autre, de telle sorte que des ondes harmoniques de moteur peuvent être efficacement retenues, et des bruits de moteur sont réduits.
PCT/CN2023/119088 2022-10-31 2023-09-15 Ensemble stator de moteur et moteur WO2024093547A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211346798.6 2022-10-31
CN202211346798.6A CN115912700A (zh) 2022-10-31 2022-10-31 一种电机定子组件及电机

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WO2024093547A1 true WO2024093547A1 (fr) 2024-05-10

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CN (1) CN115912700A (fr)
WO (1) WO2024093547A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100176668A1 (en) * 2009-01-15 2010-07-15 Aisin Aw Co., Ltd. Stator
CN211239470U (zh) * 2020-03-05 2020-08-11 卧龙电气(上海)中央研究院有限公司 一种高功率密度高速永磁同步电机冷却结构
CN112615445A (zh) * 2020-11-25 2021-04-06 华为技术有限公司 电机、动力总成和设备
CN114301196A (zh) * 2020-11-25 2022-04-08 华为数字能源技术有限公司 定子、电机、动力总成及电动车
CN114928186A (zh) * 2022-05-24 2022-08-19 厦门势拓御能科技有限公司 一种定子槽内直接油冷的冷却结构及油冷电机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100176668A1 (en) * 2009-01-15 2010-07-15 Aisin Aw Co., Ltd. Stator
CN211239470U (zh) * 2020-03-05 2020-08-11 卧龙电气(上海)中央研究院有限公司 一种高功率密度高速永磁同步电机冷却结构
CN112615445A (zh) * 2020-11-25 2021-04-06 华为技术有限公司 电机、动力总成和设备
CN114301196A (zh) * 2020-11-25 2022-04-08 华为数字能源技术有限公司 定子、电机、动力总成及电动车
CN114928186A (zh) * 2022-05-24 2022-08-19 厦门势拓御能科技有限公司 一种定子槽内直接油冷的冷却结构及油冷电机

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