CN116345756B - Motor cooling system and motor - Google Patents
Motor cooling system and motor Download PDFInfo
- Publication number
- CN116345756B CN116345756B CN202310618995.7A CN202310618995A CN116345756B CN 116345756 B CN116345756 B CN 116345756B CN 202310618995 A CN202310618995 A CN 202310618995A CN 116345756 B CN116345756 B CN 116345756B
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- Prior art keywords
- magnetic pole
- punching sheet
- heat dissipation
- pole piece
- pole punching
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Classifications
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- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating 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
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
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- 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
Abstract
The application provides a motor cooling system and a motor, which belong to the technical field of motors, and each magnetic pole iron core comprises: the first magnetic pole punching sheet, the spacer block and the second magnetic pole punching sheet are arranged along the axial direction of the rotor body; the first magnetic pole punching sheet is positioned at two sides of the second magnetic pole punching sheet; the spacer is positioned between the first magnetic pole punching sheet and the second magnetic pole punching sheet, so that a first heat dissipation channel is formed between the first magnetic pole punching sheet and the second magnetic pole punching sheet; the first magnetic pole punching sheet is fixedly connected with the rotor body through a fastener, and the first magnetic pole punching sheet is clamped and fixed on the second magnetic pole punching sheet through a spacer block. According to the motor cooling system and the motor, the first magnetic pole punching sheet and the second magnetic pole punching sheet are separated by a certain distance by the partition block, so that the first magnetic pole punching sheet and the second magnetic pole punching sheet form a first heat dissipation channel, and the contact area of cold air flow and the rotor is increased. In the working process of the motor, the heat on the rotor can be taken away rapidly through the cold air flow of the first heat dissipation channel, so that the heat dissipation efficiency of the motor is improved.
Description
Technical Field
The application belongs to the technical field of motors, and particularly relates to a motor cooling system and a motor adopting the motor cooling system.
Background
The air-cooled permanent magnet direct-drive motor comprises a machine base, wherein a rotating shaft, a stator and a rotor are arranged in the machine base, the stator is wrapped outside the rotor, energy exchange gaps are reserved between the stator and the rotor, and the rotor is fixed on the rotating shaft; the rotor comprises a rotor body, permanent magnets and a magnetic pole iron core; the rotor body is of a cylindrical structure, permanent magnets and magnetic pole iron cores which are arranged at intervals along the circumferential direction of the rotor body are arranged on the outer wall of the rotor body, and each magnetic pole iron core comprises magnetic pole punching sheets which are arranged along the axial direction of the rotor body. The air-cooled permanent magnet direct-drive motor can generate a large amount of heat during operation, if the heat is not timely emitted, the motor is overheated and burnt out to be short-circuited, the air-cooled permanent magnet direct-drive motor generally adopts a shell surface cooling mode, the stator and the rotor cannot be directly blown by the mode, and the heat dissipation effect is poor.
Disclosure of Invention
The application aims to provide a motor cooling system, which aims to solve the problem that the existing motor is poor in heat dissipation effect.
In order to achieve the above purpose, the application adopts the following technical scheme: the motor cooling system comprises a rotor, wherein the rotor is fixedly arranged on a rotating shaft and comprises a rotor body, permanent magnets and a magnetic pole iron core; wherein each of the pole cores comprises: the first magnetic pole punching sheet, the spacer and the second magnetic pole punching sheet are arranged along the axial direction of the rotor body; the first magnetic pole punching sheet is positioned at two sides of the second magnetic pole punching sheet; the spacer is positioned between the first magnetic pole punching sheet and the second magnetic pole punching sheet, so that a first heat dissipation channel is formed between the first magnetic pole punching sheet and the second magnetic pole punching sheet; the first magnetic pole punching sheet is fixedly connected with the rotor body through a fastener, and the first magnetic pole punching sheet clamps and fixes the second magnetic pole punching sheet through the spacer block.
In one possible implementation, the spacer is a channel steel or an i-steel.
In one possible implementation manner, a screw is installed between the first magnetic pole punching sheet and the second magnetic pole punching sheet, the screw is connected with the first magnetic pole punching sheet and the second magnetic pole punching sheet through threads, and the spacer is sleeved on the screw.
In one possible implementation manner, a rivet is installed between the first magnetic pole punching piece and the second magnetic pole punching piece, the rivet is in plug-in fit with the first magnetic pole punching piece and the second magnetic pole punching piece, and the spacer is sleeved on the rivet.
In one possible implementation manner, an iron core key is installed between the first magnetic pole punching sheet and the second magnetic pole punching sheet, the iron core key is in plug-in fit with the first magnetic pole punching sheet and the second magnetic pole punching sheet, and the iron core key is arranged along the axial direction of the rotor body.
In one possible implementation, the rotor body includes an inner sleeve, a plurality of outer sleeves, and a support frame; the inner sleeve is coaxially arranged with the outer sleeve, the supporting frame is used for connecting the inner sleeve with the outer sleeve, the inner sleeve is fixedly arranged on a rotating shaft, the outer sleeve is correspondingly arranged with the first magnetic pole punching pieces, the first magnetic pole punching pieces are fixedly arranged on the outer peripheral surface of the outer sleeve, a second heat dissipation channel is formed between two adjacent outer sleeves, a third heat dissipation channel communicated with the outside is formed between the inner sleeve and the supporting frame, and the first heat dissipation channel, the second heat dissipation channel and the third heat dissipation channel are sequentially communicated.
In one possible implementation, the support frame includes a radial support plate and an axial support plate; the radial support plate is perpendicular to the axial direction of the rotor body and is positioned in the middle of the rotor body, the axial support plate is parallel to the axial direction of the rotor body and is positioned on two sides of the radial support plate, and the radial support plate and the axial support plate are fixedly connected with the inner sleeve and the outer sleeve.
In one possible implementation, a motor cooling system further includes a housing, a shaft, and a stator; the rotating shaft is rotatably arranged in the machine base, and the stator is fixedly arranged in the machine base and is wrapped on the periphery of the rotor; the number of the stators is multiple, the stators are arranged at intervals along the axial direction of the rotating shaft, a fourth heat dissipation channel is formed between every two adjacent stators, and the fourth heat dissipation channels are in one-to-one correspondence with the first heat dissipation channels.
In one possible implementation, a cooler is mounted on top of the housing; the cooler is positioned outside the stator and used for radiating heat inside the engine base.
Compared with the prior art, the motor cooling system provided by the embodiment of the application has the advantages that each magnetic pole iron core comprises the first magnetic pole punching sheet, the spacer block and the second magnetic pole punching sheet which are distributed along the circumferential direction of the rotor body. The first magnetic pole punching sheet is positioned at two sides of the second magnetic pole punching sheet, and the first magnetic pole punching sheet is fixedly connected with the rotor body through a fastener. The spacer is positioned between the first magnetic pole punching sheet and the second magnetic pole punching sheet, and the first magnetic pole punching sheet is clamped and fixed on the second magnetic pole punching sheet through the spacer. The first magnetic pole punching sheet and the second magnetic pole punching sheet are separated by a certain distance by the partition block, so that the first heat dissipation channel is formed by the first magnetic pole punching sheet and the second magnetic pole punching sheet, and the contact area of the cold air flow and the rotor is increased. In the working process of the motor, the heat on the rotor can be taken away rapidly through the cold air flow of the first heat dissipation channel, so that the heat dissipation efficiency of the motor is improved.
It is a further object of the present application to provide an electric machine comprising any of the above-described electric machine cooling systems.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a motor cooling system according to a first embodiment of the present application;
FIG. 2 is an enlarged view at A in FIG. 1;
fig. 3 is a schematic perspective view of a pole core according to a first embodiment of the present application;
fig. 4 is a left side view of a pole core housing provided in accordance with a second embodiment of the present application;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;
fig. 6 is a schematic perspective view of a rotor body according to a first embodiment of the present application;
FIG. 7 is a left side view of a rotor body according to a first embodiment of the present application;
FIG. 8 is a cross-sectional view taken along line C-C of FIG. 7;
fig. 9 is a schematic perspective view of a supporting frame according to an embodiment of the application;
fig. 10 is a cross-sectional view of a permanent magnet according to a first embodiment of the present application;
FIG. 11 is a schematic cross-sectional view of a motor according to a first embodiment of the present application;
fig. 12 is an enlarged view at D in fig. 11.
In the figure: 1. a base; 2. a rotating shaft; 3. a stator; 301. a fourth heat dissipation channel; 4. a rotor; 401. a rotor body; 402. a permanent magnet; 403. a pole core; 404. a first magnetic pole piece; 405. a spacer block; 406. a second magnetic pole piece; 407. a first heat dissipation channel; 408. a fastener; 409. a limit column; 410. a screw; 411. a rivet; 412. an iron core key; 413. an inner sleeve; 414. an outer sleeve; 415. a support frame; 416. a second heat dissipation channel; 417. a third heat dissipation channel; 418. a radial support plate; 419. an axial support plate; 5. a cooler.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
Referring to fig. 1 to 3, a motor cooling system according to the present application will be described. The motor cooling system comprises a rotor 4, wherein the rotor 4 is fixedly arranged on a rotating shaft 2, and the rotor 4 comprises a rotor body 401, a permanent magnet 402 and a magnetic pole iron core 403; each pole core 403 includes: a first magnetic pole piece 404, a spacer 405, and a second magnetic pole piece 406 arranged along the axial direction of the rotor body 401; the first pole piece 404 is located on both sides of the second pole piece 406; the spacer 405 is located between the first magnetic pole piece 404 and the second magnetic pole piece 406, so that a first heat dissipation channel 407 is formed between the first magnetic pole piece 404 and the second magnetic pole piece 406; the first magnetic pole punching piece 404 is fixedly connected with the rotor body 401 through a fastener 408, and the first magnetic pole punching piece 404 is clamped and fixed to the second magnetic pole punching piece 406 through a spacer 405.
In comparison with the prior art, each of the pole cores 403 includes a first pole piece 404, a spacer 405, and a second pole piece 406 arranged along the circumferential direction of the rotor body 401. The first pole segment 404 is located on both sides of the second pole segment 406, and the first pole segment 404 is fixedly connected to the rotor body 401 by a fastener 408. The spacer 405 is located between the first pole piece 404 and the second pole piece 406, and the first pole piece 404 is clamped and fixed to the second pole piece 406 by the spacer 405. The spacer 405 separates the first pole piece 404 and the second pole piece 406 by a distance such that the first pole piece 404 and the second pole piece 406 form a first heat dissipation channel 407, thereby increasing the contact area of the cold air flow with the rotor 4. During the operation of the motor, the heat on the rotor 4 can be quickly taken away by the cold air flow passing through the first heat dissipation channel 407, so that the heat dissipation efficiency of the motor is improved.
In this embodiment, referring to fig. 1, 2 and 10, the fastener 408 is a screw, and the first magnetic pole punch 404 is provided with a counterbore for installing the screw. The permanent magnet 402 is located between two adjacent pole cores 403, and the first pole piece 404 and the second pole piece 403 of the adjacent two pole cores 403 are respectively in one-to-one correspondence. Limiting grooves for mounting permanent magnets are formed in the opposite side walls of the two adjacent pole cores 403, and the limiting grooves are arranged along the axial direction of the rotor body 401. The number of permanent magnets between two adjacent pole cores 403 is plural, and is arranged in the axial direction of the rotor body 401. A limiting column 409 is installed between the two permanent magnets, and the length direction of the limiting column 409 is parallel to the axial direction of the rotor body 401. The side wall of the permanent magnet is provided with a groove for installing the limit column 409. The spacing post 409 is used for separating a certain distance between two permanent magnets to form the heat dissipation space between two permanent magnets 402, this heat dissipation space and first heat dissipation passageway 407 intercommunication have further increased rotor 4 and cold air current's area of contact, have promoted radiating efficiency.
In some embodiments, referring to fig. 2 and 3, the spacer 405 is a channel or i-beam. In the embodiment, the channel steel and the I-steel are of a frame structure, and have good structural strength. The spacer 405 is preferably an i-steel, and two flanges of the i-steel respectively abut against the side walls of the first magnetic pole punching piece 404 and the second magnetic pole punching piece 406, and the web of the i-steel is disposed along the disposition direction. The i-steel is connected with the first magnetic pole punching piece 404 and the second magnetic pole punching piece 406 in an abutting mode, and other connecting pieces are not needed. The outer contour of the i-steel is smaller than the outer contours of the first pole piece 404 and the second pole piece 406. The i-steel is centered horizontally on the first pole piece 404 and the second pole piece 406.
In some embodiments, referring to fig. 4 and 5, a screw 410 is installed between the first magnetic pole piece 404 and the second magnetic pole piece 406, the screw 410 is connected with the first magnetic pole piece 404 and the second magnetic pole piece 406 through threads, and the spacer 405 is sleeved on the screw 410. In this embodiment, the number of the first magnetic pole pieces 404 and the second magnetic pole pieces 406 is plural, and they are alternately arranged along the axial direction of the rotor body 401. The length of the screw 410 is equal to or longer than the length dimension of the pole core 403. The first pole piece 404 and the second pole piece 406 are provided with threaded holes which are matched with the screw 410. The length direction of the screw 410 is parallel to the axial direction of the rotor body 401, and sequentially connects all the first magnetic pole pieces 404 and the second magnetic pole pieces 406 on each magnetic pole core 403, thereby improving the connection strength between the first magnetic pole pieces 404 and the second magnetic pole pieces 406. The number of screws 410 is two, and the screws are arranged in a central symmetry on the first magnetic pole piece 404 and/or the second magnetic pole piece 406 (the outer contour of the first magnetic pole piece 404 and the second magnetic pole piece 406 are the same). The spacer 405 has a circular ring structure and is sleeved on the screw 410. The inner wall of the spacer 405 is a smooth surface, and can move along the length direction of the screw 410, so as to facilitate adjustment of the position of the spacer 405 on the screw 410. The spacer 405 may be provided separately from the screw 410 between the first pole piece 404 and the second pole piece 406.
In some embodiments, referring to fig. 4 and 5, a rivet 411 is installed between the first magnetic pole piece 404 and the second magnetic pole piece 406, the rivet 411 is in plug-in fit with the first magnetic pole piece 404 and the second magnetic pole piece 406, and the spacer 405 is sleeved on the rivet 411. In this embodiment, the rivet 411 is disposed along the axial direction of the rotor body 401, penetrating the first magnetic pole piece 404 and the second magnetic pole piece 406 in order. Through holes which are in plug-in fit with rivets 411 are correspondingly formed in the first magnetic pole punching piece 404 and the second magnetic pole punching piece 406. The number of rivets 411 is two and is arranged in a central symmetry on the first pole piece 404 and/or the second pole piece 406. By providing the rivet 411 between the first magnetic pole piece 404 and the second magnetic pole piece 406, positional accuracy between the first magnetic pole piece 404 and the second magnetic pole piece 406, that is, complete coincidence of the first magnetic pole piece 404 and the second magnetic pole piece 406 in the axial direction along the rotor body 401, can be ensured. The spacer 405 has a circular ring structure and is sleeved on the rivet 411. The spacer 405 may be moved along the length of the rivet 411 to facilitate adjustment of the position of the spacer 405. The spacer 405 may be sleeved on the screw 410 and/or the rivet 411 or may be separately disposed between the first pole piece 404 and the second pole piece 406.
In some embodiments, referring to fig. 4 and 5, an iron core key 412 is installed between the first magnetic pole piece 404 and the second magnetic pole piece 406, the iron core key 412 is in plug-in fit with the first magnetic pole piece 404 and the second magnetic pole piece 406, and the iron core key 412 is disposed along the axial direction of the rotor body 401. In this embodiment, the longitudinal cross-sectional shape of the core key 412 is rectangular. The length direction of the core key 412 is kept parallel along the axial direction of the rotor body 401. The core key 412 also prevents relative rotation between the first pole piece 404 and the second pole piece 406 while connecting the first pole piece 404 and the second pole piece 406. The centers of the first pole piece 404 and the second pole piece 406 are provided with through holes for mounting the core key 412. The core key 412 is an interference fit with the through hole to ensure that the first pole piece 404 and the second pole piece 406 remain relatively stable on the core key 412. The spacer 405 and the core key 412 are offset from each other, thereby ensuring that they can be separately assembled and disassembled.
In some embodiments, referring to fig. 6, 11 and 12, the rotor body 401 includes an inner sleeve 413, a plurality of outer sleeves 414 and a support 415; the inner sleeve 413 and the outer sleeve 414 are coaxially arranged, the support frame 415 is used for connecting the inner sleeve 413 and the outer sleeve 414, the inner sleeve 413 is fixedly installed on the rotating shaft 2, the outer sleeve 414 and the first magnetic pole punching sheet 404 are correspondingly arranged, the first magnetic pole punching sheet 404 is fixedly installed on the outer peripheral surface of the outer sleeve 414, a second heat dissipation channel 416 is formed between two adjacent outer sleeves 414, a third heat dissipation channel 417 communicated with the outside is formed between the inner sleeve 413 and the support frame 415, and the first heat dissipation channel 407, the second heat dissipation channel 416 and the third heat dissipation channel 417 are sequentially communicated. In this embodiment, the number of the inner sleeves 413 is one, the outer sleeves 414 are sleeved and fixed on the rotating shaft 2, the number of the outer sleeves 414 is the same as the number of the first magnetic pole punching pieces 404 in each magnetic pole core 403, and the outer sleeves 414 are coaxially arranged with the inner sleeves 413 and are located outside the inner sleeves 413. The first pole segment 404 is fixedly mounted on the outer circumferential surface of the outer sleeve 414. The side of the second magnetic pole punching piece 406, which is close to the rotor body 401, is in a suspended state, and the rotor body 401 does not need to support the second magnetic pole punching piece 406 because the first magnetic pole punching piece 404 clamps and fixes the second magnetic pole punching piece 406, and a screw 410, a rivet 411 and an iron core key 412 are also installed between the first magnetic pole punching piece 404 and the second magnetic pole punching piece 406. The second heat dissipation channels 416 formed between the adjacent two outer sleeves 414 correspond to the second magnetic pole pieces 406 and communicate with the first heat dissipation channels 407 on both sides of the second magnetic pole pieces 406. A third heat dissipation channel 417 communicated with the outside is formed between the inner sleeve 413 and the support frame 415, the third heat dissipation channel 417 is communicated with the second heat dissipation channel 416, and the cold air flow sequentially passes through the first heat dissipation channel 407, the second heat dissipation channel 416 and the third heat dissipation channel 417, so that heat dissipation is performed on the whole rotor 4.
In some embodiments, referring to fig. 6-9, the support frame 415 includes a radial support plate 418 and an axial support plate 419; the radial support plates 418 are perpendicular to the axial direction of the rotor body 401 and are located in the middle of the rotor body 401, the axial support plates 419 are parallel to the axial direction of the rotor body 401 and are located on both sides of the radial support plates 418, and the radial support plates 418 and the axial support plates 419 are fixedly connected with the inner sleeve 413 and the outer sleeve 414. In this embodiment, the radial support plate 418 has an annular structure and is fixed to the outer portion of the inner sleeve 413. The radial support plates 418 remain perpendicular to the axial direction of the inner sleeve 413 (i.e., the axial direction of the rotor body 401). The number of radial support plates 418 is one. The radial support plate 418 is centrally located within the inner sleeve 413 and is fixedly connected to one of the outer sleeves 414 in an intermediate position. The number of axial support plates 419 is plural, one on each side of the radial support plate 418. The axial support plates 419 are kept parallel to the axial direction of the inner sleeve 413 (i.e., the axial direction of the rotor body 401), and a plurality of axial support plates 419 are radially arranged on the inner sleeve 413. The axial support plate 419 is fixedly connected to the inner sleeve 413 and the radial support plates 418 and simultaneously to the plurality of outer sleeves 414. The radial support plate 418 and the axial support plate 419 form a frame structure, and the radial support plate 418, two adjacent axial support plates 419 on the same side and the inner sleeve 413 enclose a third heat dissipation channel 417, and an outlet of the third heat dissipation channel 417 faces away from the radial support plate 418.
In some embodiments, referring to fig. 11 and 12, a motor cooling system further includes a housing 1, a rotating shaft 2, and a stator 3; the rotating shaft 2 is rotatably arranged in the machine base 1, and the stator 3 is fixedly arranged in the machine base 1 and is wrapped on the periphery of the rotor 4; the number of the stators 3 is a plurality, the stators 3 are arranged at intervals along the axial direction of the rotating shaft 2, a fourth heat dissipation channel 301 is formed between two adjacent stators 3, and the fourth heat dissipation channels 301 are in one-to-one correspondence with the first heat dissipation channels 407. In this embodiment, the rotating shaft 2 is rotatably installed in the machine base 1 along a horizontal direction, and the rotor 4 is fixedly installed on the rotating shaft 2. The stator 3 is fixedly installed inside the housing 1 and is wrapped around the outside of the rotor 4. The number of stators 3 is plural, and are arranged at intervals in the axial direction of the rotary shaft 2, so that a fourth heat radiation passage 301 is formed between the two stators 3. The fourth heat dissipation channels 301 are in one-to-one correspondence with the first heat dissipation channels 407. The cold air flow radiates heat from the outside of the stator 3 through the fourth heat radiation passage 301 to the stator 3, and then enters into the first heat radiation passage 407.
In some embodiments, referring to fig. 10 and 11, a cooler 5 is installed on the top of the stand 1; the cooler 5 is located outside the stator 3 for radiating heat from the inside of the housing 1. In this embodiment, the cooler 5 is fixedly installed on the top of the housing 1 while the cooler 5 is located above the stator 3. The cooler 5 is a heat exchange tube. After the air flow enters the heat exchange tube to exchange heat, the air flow is converted into cold air flow, and the cold air flow downwards sequentially passes through the fourth heat dissipation channel 301, the first heat dissipation channel 407, the second heat dissipation channel 416 and the third heat dissipation channel 417, so that heat dissipation is carried out on the stator 3 and the rotor 4, and the hot air flow discharged from the third heat dissipation channel 417 is upwards converted into the cold air flow after passing through the heat exchange tube, so that the hot air flow and the cold air flow are alternately changed and circularly flow in the machine base 1, and the purpose of continuous heat dissipation on the motor is realized.
The application also provides a motor, which comprises any one of the motor cooling systems.
In contrast to the prior art, the motor cooling system employed in the motor of the present application, each pole core 403 includes a first pole piece 404, a spacer 405, and a second pole piece 406 arranged in the circumferential direction of the rotor body 401. The first pole segment 404 is located on both sides of the second pole segment 406, and the first pole segment 404 is fixedly connected to the rotor body 401 by a fastener 408. The spacer 405 is located between the first pole piece 404 and the second pole piece 406, and the first pole piece 404 is clamped and fixed to the second pole piece 406 by the spacer 405. The spacer 405 separates the first pole piece 404 and the second pole piece 406 by a distance such that the first pole piece 404 and the second pole piece 406 form a first heat dissipation channel 407, thereby increasing the contact area of the cold air flow with the rotor 4. During the operation of the motor, the heat on the rotor 4 can be quickly taken away by the cold air flow passing through the first heat dissipation channel 407, so that the heat dissipation efficiency of the motor is improved.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application.
Claims (9)
1. The motor cooling system comprises a rotor, wherein the rotor is fixedly arranged on a rotating shaft and comprises a rotor body, permanent magnets and a magnetic pole iron core; wherein each of the pole cores comprises: the first magnetic pole punching sheet, the spacer and the second magnetic pole punching sheet are arranged along the axial direction of the rotor body; the first magnetic pole punching sheet is positioned at two sides of the second magnetic pole punching sheet; the spacer is positioned between the first magnetic pole punching sheet and the second magnetic pole punching sheet, so that a first heat dissipation channel is formed between the first magnetic pole punching sheet and the second magnetic pole punching sheet; the first magnetic pole punching sheet is fixedly connected with the rotor body through a fastener, and the first magnetic pole punching sheet clamps and fixes the second magnetic pole punching sheet through the spacer block;
the rotor body comprises an inner sleeve, a plurality of outer sleeves and a supporting frame; the inner sleeve is coaxially arranged with the outer sleeve, the supporting frame is used for connecting the inner sleeve with the outer sleeve, the inner sleeve is fixedly arranged on a rotating shaft, the outer sleeve is correspondingly arranged with the first magnetic pole punching pieces, the first magnetic pole punching pieces are fixedly arranged on the outer peripheral surface of the outer sleeve, a second heat dissipation channel is formed between two adjacent outer sleeves, a third heat dissipation channel communicated with the outside is formed between the inner sleeve and the supporting frame, and the first heat dissipation channel, the second heat dissipation channel and the third heat dissipation channel are sequentially communicated.
2. A motor cooling system as claimed in claim 1, wherein the spacer is a channel or i-beam.
3. The motor cooling system of claim 1, wherein a screw is mounted between the first pole piece and the second pole piece, the screw is in threaded connection with the first pole piece and the second pole piece, and the spacer is sleeved on the screw.
4. A motor cooling system as set forth in claim 1 wherein a rivet is mounted between said first pole piece and said second pole piece, said rivet being in mating engagement with said first pole piece and said second pole piece, said spacer being mounted on said rivet.
5. A motor cooling system as set forth in claim 1, wherein an iron core key is installed between said first pole piece and said second pole piece, said iron core key being in mating engagement with said first pole piece and said second pole piece, said iron core key being disposed axially of said rotor body.
6. A motor cooling system as set forth in claim 1, wherein said support frame includes a radial support plate and an axial support plate; the radial support plate is perpendicular to the axial direction of the rotor body and is positioned in the middle of the rotor body, the axial support plate is parallel to the axial direction of the rotor body and is positioned on two sides of the radial support plate, and the radial support plate and the axial support plate are fixedly connected with the inner sleeve and the outer sleeve.
7. The motor cooling system of claim 1, further comprising a housing, a shaft, and a stator; the rotating shaft is rotatably arranged in the machine base, and the stator is fixedly arranged in the machine base and is wrapped on the periphery of the rotor; the number of the stators is multiple, the stators are arranged at intervals along the axial direction of the rotating shaft, a fourth heat dissipation channel is formed between every two adjacent stators, and the fourth heat dissipation channels are in one-to-one correspondence with the first heat dissipation channels.
8. A motor cooling system as set forth in claim 7, wherein a cooler is mounted on top of said housing; the cooler is positioned outside the stator and used for radiating heat inside the engine base.
9. An electric machine comprising an electric machine cooling system according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310618995.7A CN116345756B (en) | 2023-05-30 | 2023-05-30 | Motor cooling system and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310618995.7A CN116345756B (en) | 2023-05-30 | 2023-05-30 | Motor cooling system and motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116345756A CN116345756A (en) | 2023-06-27 |
| CN116345756B true CN116345756B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310618995.7A Active CN116345756B (en) | 2023-05-30 | 2023-05-30 | Motor cooling system and motor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391208A (en) * | 2015-12-14 | 2016-03-09 | 湘潭电机股份有限公司 | Rotor of permanent magnet motor and permanent magnet motor |
| CN205407449U (en) * | 2016-03-10 | 2016-07-27 | 重庆智仁发电设备有限责任公司 | Latent utmost point rotor of outer heat dissipation |
| CN106411009A (en) * | 2016-11-22 | 2017-02-15 | 北京三电机系统有限责任公司 | Permanent magnet motor rotor and generator |
| CN113054786A (en) * | 2019-12-27 | 2021-06-29 | 安徽明腾永磁机电设备有限公司 | High-speed permanent magnet motor |
| CN216599171U (en) * | 2021-12-30 | 2022-05-24 | 江苏经纬轨道交通设备有限公司 | Permanent magnet motor rotor punching sheet and permanent magnet motor |
| WO2023045264A1 (en) * | 2021-09-27 | 2023-03-30 | 佛山市威灵洗涤电机制造有限公司 | Rotor structure, electric motor structure, and electronic device |
| CN218829294U (en) * | 2022-11-17 | 2023-04-07 | 深圳拓邦股份有限公司 | Motor rotor punching sheet, iron core and motor |
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2023
- 2023-05-30 CN CN202310618995.7A patent/CN116345756B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391208A (en) * | 2015-12-14 | 2016-03-09 | 湘潭电机股份有限公司 | Rotor of permanent magnet motor and permanent magnet motor |
| CN205407449U (en) * | 2016-03-10 | 2016-07-27 | 重庆智仁发电设备有限责任公司 | Latent utmost point rotor of outer heat dissipation |
| CN106411009A (en) * | 2016-11-22 | 2017-02-15 | 北京三电机系统有限责任公司 | Permanent magnet motor rotor and generator |
| CN113054786A (en) * | 2019-12-27 | 2021-06-29 | 安徽明腾永磁机电设备有限公司 | High-speed permanent magnet motor |
| WO2023045264A1 (en) * | 2021-09-27 | 2023-03-30 | 佛山市威灵洗涤电机制造有限公司 | Rotor structure, electric motor structure, and electronic device |
| CN216599171U (en) * | 2021-12-30 | 2022-05-24 | 江苏经纬轨道交通设备有限公司 | Permanent magnet motor rotor punching sheet and permanent magnet motor |
| CN218829294U (en) * | 2022-11-17 | 2023-04-07 | 深圳拓邦股份有限公司 | Motor rotor punching sheet, iron core and motor |
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| CN116345756A (en) | 2023-06-27 |
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