CN220173048U - Laminated motor rotor with heat dissipation function, motor and electric vehicle - Google Patents

Abstract

The utility model relates to a laminated motor rotor with a heat dissipation function, a motor and an electric vehicle, wherein the motor rotor comprises a main shaft, a laminated iron core, two baffles, a hollow main shaft and a plurality of oil throwing hole groups I and II, wherein the two ends of the main shaft are respectively opened, and the two ends of the main shaft are respectively provided with an oil throwing hole group I and an oil throwing hole group II which penetrate through the main shaft; the two baffles are respectively sleeved at the two ends of the main shaft, the laminated iron core is sleeved on the main shaft, the laminated iron core is positioned between the two baffles and respectively attached to the two baffles, a plurality of cooling channels with both open ends are arranged on the laminated iron core, and the cooling channels respectively extend along the axial direction of the main shaft; cooling oil enters the main shaft from one end of the main shaft. The utility model has the advantages of simple structure and reasonable design, can radiate heat inside the rotor by utilizing the special structure of the rotor, effectively reduces the overall temperature of the rotor, avoids permanent demagnetization of magnetic steel, improves the service life and the maintenance of the performance reliability of the motor, can lighten the overall weight of the rotor and improves the response speed of the motor.

Description

Laminated motor rotor with heat dissipation function, motor and electric vehicle

Technical Field

The utility model relates to the technical field of motor heat dissipation, in particular to a laminated motor rotor with a heat dissipation function, a motor and an electric vehicle.

Background

Under the current general trend of passenger car electrodynamic, the design running speed of a driving motor which is one of three new parts of an automobile (electric car) is also higher and higher, and the high-rotation-speed motor can save energy compared with a common motor and can effectively improve the endurance mileage of the electric car. However, the direct problem caused by the high rotation speed is that the heat productivity of the motor is greatly improved, and if the motor cannot be subjected to effective heat dissipation, the motor magnetic steel is permanently demagnetized if the motor is light, so that the motor performance is reduced; if the weight is heavy, the motor is directly burnt out, and the driving safety of personnel is endangered.

At present, the main stream of the oil-cooled flat wire motor is to fill the inner cavity of the motor with cooling oil, and a circulating flow passage and an oil pump are designed to circulate the cooling oil, so that the outer surface of a stator and a rotor (iron core) of the inner cavity of the motor is radiated. However, this solution has a disadvantage in that heat cannot be dissipated from the inside of the stator and rotor (iron core). The motor stator core slot is filled with flat copper wires, is a good heat transfer conductor, can rapidly lead out internal heat to two ends, is cooled after being contacted with cooling oil, but the embedded rare earth permanent magnet of the rotor core does not have good heat conductivity, and the rotor is a rotating piece, so that a large amount of heat accumulation is generated in the core during working, and the embedded magnetic steel is easy to permanently demagnetize.

Disclosure of Invention

The utility model aims to solve the technical problem in the prior art by providing a laminated motor rotor with a heat dissipation function, a motor and an electric vehicle.

The technical scheme for solving the technical problems is as follows:

the laminated motor rotor with the heat dissipation function comprises a main shaft, a laminated iron core and two baffles, wherein the main shaft is hollow, two ends of the main shaft are open, and the parts, close to the two ends, of the side wall of the main shaft are respectively provided with an oil throwing hole group I and an oil throwing hole group II which penetrate inside and outside; the two baffles are respectively sleeved at two ends of the main shaft, the laminated iron core is sleeved on the main shaft, the laminated iron core is positioned between the two baffles and respectively attached to the two baffles, a plurality of cooling channels with two open ends are arranged on the laminated iron core, and the cooling channels respectively extend along the axial direction of the main shaft; and cooling oil enters the main shaft from one end of the main shaft, and enters between the two baffle plates and the two ends of the laminated iron core respectively through the first oil throwing hole group and the oil throwing hole group and is thrown out.

The beneficial effects of the utility model are as follows: during operation, cooling oil enters the main shaft from an opening at one end of the main shaft, then enters between two baffles and two ends of the laminated iron core respectively from the oil throwing hole group I and the oil throwing hole group II and is thrown out, so that rapid heat dissipation inside the rotor is realized, the heat dissipation effect is better, and the working performance of the rotor is ensured.

The utility model has simple structure and reasonable design, can radiate heat inside the rotor by utilizing the special structure of the rotor, effectively reduces the overall temperature of the rotor, avoids permanent demagnetization of the magnetic steel, improves the service life of the motor and maintains the reliability of the performance, reduces the overall weight of the rotor, and improves the corresponding speed of the motor.

On the basis of the technical scheme, the utility model can be improved as follows.

Further, the two baffles are respectively provided with an oil guide groove group communicated with the oil throwing hole group I and the oil throwing hole group II, and the baffles are also respectively provided with an oil throwing groove group; the plurality of cooling channels are divided into two groups, wherein one group of cooling channels is respectively communicated with the oil throwing hole group I and the oil guide groove group, and the other group of cooling channels is respectively communicated with the oil throwing hole group II and the oil throwing groove group.

The beneficial effect of adopting above-mentioned further scheme is during operation, in the cooling oil gets into the main shaft from the open one end department of main shaft, then gets into the oil guide groove group on two baffles respectively from throwing oil hole group one and throwing oil hole group, the cooling oil changes the cooling channel flow direction another baffle that corresponds to the trailing edge through the oil guide groove group on every baffle, reaches to throw oil groove group and gets rid of, simple structure, reasonable in design realizes the inside quick heat dissipation of rotor, the radiating effect preferred guarantees the working property of rotor.

Further, the oil throwing hole group I comprises a plurality of oil throwing holes I, and the oil throwing holes I are uniformly distributed on one end of the main shaft at intervals along the circumferential direction of the main shaft; the second oil throwing hole group comprises a plurality of second oil throwing holes, and the second oil throwing holes are uniformly distributed on the other end of the main shaft at intervals along the circumferential direction of the main shaft;

each oil guide groove group comprises a plurality of oil guide grooves which are uniformly distributed on the surface of one side of the baffle plate close to the laminated iron core at intervals in a circumferential manner, are in one-to-one correspondence and are communicated with a plurality of oil throwing holes, and each oil guide groove and the corresponding oil throwing hole are respectively communicated with two ends of the corresponding cooling channel; every get rid of the oil groove group all includes a plurality of oil groove that gets rid of, and a plurality of get rid of the oil groove is circumference even interval distribution corresponds the baffle is close to on the one side surface of lamination iron core, and with a plurality of get rid of oil hole two one-to-one and intercommunication, every get rid of the oil groove with correspond get rid of oil hole two respectively with correspond cooling channel's both ends intercommunication.

The beneficial effect of adopting above-mentioned further scheme is that during operation, in the cooling oil gets into the main shaft from the one end open of main shaft, then get into a plurality of oil guide grooves on two baffles respectively from a plurality of oil slingers I and a plurality of oil slingers II, the cooling oil changes the back through a plurality of oil guide grooves on every baffle and flows to another baffle along the cooling channel that corresponds, get to a plurality of oil slingers on another baffle after and get rid of, simple structure, reasonable in design realizes the inside quick heat dissipation of rotor, the radiating effect is better, guarantee the working property of rotor.

Further, the first oil throwing holes and the second oil throwing holes are alternately distributed in sequence, and the oil guide grooves and the oil throwing grooves on the baffle are alternately distributed in sequence.

The beneficial effect of adopting above-mentioned further scheme is simple structure, reasonable in design, and a plurality of oil slinger hole one and a plurality of oil slinger hole two distribute rationally for oil groove and oil slinger on two baffles can not influence each other, guarantee the normal clear of rotor cooling operation, thereby guarantee the normal cooling of rotor.

Further, the two baffles are respectively in a circular ring structure.

The beneficial effect of adopting above-mentioned further scheme is simple structure, reasonable in design, both conveniently establishes the baffle cover on the main shaft, conveniently distributes again and leads the oil groove and get rid of the oil groove.

Further, each oil guide groove consists of a groove body I and a groove body II, wherein the groove body I extends along the radial direction of the corresponding baffle plate, two ends of the groove body I are open, and one end of the groove body I is communicated with the corresponding oil throwing hole I; the second groove body is communicated with the other end of the first groove body and is communicated with the corresponding end of the cooling channel.

The beneficial effect of adopting above-mentioned further scheme is that every oil groove by cell body one with cell body two constitute, the structure is special, both can realize with throwing the intercommunication of oil hole one, can change the direction of cooling oil again to in leading-in the cooling channel that corresponds with cooling oil, thereby realize the cooling of rotor, the cooling effect is better.

Further, each oil slinging groove consists of a groove body III and a groove body IV, wherein the groove body III extends along the radial direction corresponding to the baffle plate, and a slinging hole penetrating along the radial direction of the baffle plate is formed in the groove body III; the groove body IV is communicated with the groove body III and is communicated with the corresponding end of the corresponding cooling channel.

The beneficial effect of adopting above-mentioned further scheme is that every get rid of the oil groove by cell body three and cell body four constitute, and the structure is special, both can realize with the intercommunication of corresponding cooling channel, can get rid of the cooling oil from getting rid of the hole again to realize the cooling of rotor, the cooling effect is better.

Further, two ends of the plurality of cooling channels are respectively in arc-shaped structures and respectively extend along the circumferential direction of the main shaft; each second groove body and each fourth groove body are respectively in an arc-shaped structure, extend along the circumferential direction of the corresponding baffle plate respectively, and are communicated with the corresponding ends of the corresponding cooling channels respectively.

The beneficial effect of adopting above-mentioned further scheme is that the arc design of cooling channel tip can further increase the area of coolant liquid and the inside contact of rotor, and the shape of cell body two and cell body four simultaneously matches with cooling channel's tip, further improves rotor cooling's effect, and the cooling effect is better.

The utility model also relates to an electric motor comprising a laminated motor rotor with heat dissipation as described above.

The motor has the advantages that the motor is simple in structure and reasonable in design, the special structure of the rotor can be used for radiating the inside of the rotor, the integral temperature of the rotor is effectively reduced, permanent demagnetization of magnetic steel is avoided, the service life and the performance reliability of the motor are improved, the integral weight of the rotor is reduced, and the corresponding speed of the motor is improved.

The utility model also relates to an electric vehicle comprising a motor as described above.

The electric vehicle has the advantages that the electric vehicle is simple in structure and reasonable in design, the special structure of the rotor is utilized to radiate heat inside the rotor, the integral temperature of the rotor is effectively reduced, permanent demagnetization of magnetic steel is avoided, the service life and the performance reliability maintenance of the motor are improved, the integral weight of the rotor is lightened, and the corresponding speed of the motor is improved.

Drawings

FIG. 1 is an assembly view of the present utility model;

FIG. 2 is an exploded view of the present utility model;

FIG. 3 is a schematic view of the spindle and the baffle according to the present utility model;

FIG. 4 is a schematic view of the spindle and the baffle according to the present utility model;

FIG. 5 is a schematic perspective view of a baffle plate according to the present utility model;

FIG. 6 is a schematic plan view of a baffle plate according to the present utility model;

fig. 7 is a schematic structural view of a laminated core according to the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

1. a main shaft; 2. laminated iron core; 3. a baffle; 4. a cooling channel; 5. an oil throwing hole I; 6. a second oil throwing hole; 7. an oil guiding groove; 8. an oil slinger; 9. throwing out the hole; 10. a baffle ring; 11. and (5) clamping the clamp.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

As shown in fig. 1 to 7, the present embodiment provides a laminated motor rotor with a heat dissipation function, which includes a main shaft 1, a laminated core 2, and two baffles 3, wherein the interior of the main shaft 1 is hollow, two ends of the main shaft are open, and the side wall of the main shaft is provided with a first oil throwing hole group and a second oil throwing hole group, which penetrate inside and outside, at positions close to two ends of the side wall of the main shaft; the two baffles 3 are respectively sleeved at two ends of the main shaft 1, the laminated iron core 2 is sleeved on the main shaft 1, is positioned between the two baffles 3 and is respectively attached to the two baffles 3, a plurality of cooling channels 4 with two open ends are arranged on the two baffles, and the cooling channels 4 respectively extend along the axial direction of the main shaft 1; cooling oil enters the main shaft 1 from one end of the main shaft 1, and enters between two baffle plates 3 and two ends of the laminated iron core 2 through the oil throwing hole group I and the oil throwing hole group II respectively and is thrown out.

During operation, cooling oil enters the main shaft 1 from an opening at one end of the main shaft 1, then enters between two baffles 3 and two ends of the laminated iron core 2 from the oil throwing hole group I and the oil throwing hole group II respectively and is thrown out, so that quick heat dissipation in the rotor is realized, the heat dissipation effect is better, and the working performance of the rotor is ensured.

Preferably, in this embodiment, the spindle 1 has a structure with a thick middle part and thin two ends, and the thick part of the spindle extends circumferentially beyond the baffle ring 10 near the other end.

The two baffles 3 and the laminated iron core 2 are respectively arranged on the middle part of the main shaft 1 in a sliding sleeve mode, one baffle 3 is abutted with the baffle ring 10, one end of the main shaft 1 is further sleeved with the clamp 11 in a clamping sleeve mode, the clamp 11 is abutted with the other baffle 3, and the two baffles 3 and the laminated iron core 2 can be effectively prevented from sliding off the main shaft 1.

The clip 11 can be detached from the main shaft 1, and this design is designed to facilitate assembly of the two shutters 3 and the laminated core 2.

It should be noted that the structure and the principle of the laminated core 2 described above adopt the prior art, and the specific structure and the principle thereof are not described herein.

The embodiment has simple structure and reasonable design, utilizes the special structure of the rotor to radiate heat inside the rotor, effectively reduces the overall temperature of the rotor, avoids permanent demagnetization of the magnetic steel, improves the service life of the motor and maintains the reliability of the performance, reduces the overall weight of the rotor, and improves the corresponding speed of the motor.

Example 2

In this embodiment, on the basis of embodiment 1, two baffle plates 3 are respectively provided with an oil guide groove group communicated with the oil throwing hole group I and the oil throwing hole group II, and are also respectively provided with an oil throwing groove group; the plurality of cooling channels 4 are divided into two groups, wherein two ends of one group of cooling channels 4 are respectively communicated with the oil throwing hole group I and the oil guiding groove group, and two ends of the other group of cooling channels 4 are respectively communicated with the oil throwing hole group II and the oil throwing groove group.

During operation, cooling oil enters the main shaft 1 from an opening at one end of the main shaft 1, then enters the oil guide groove groups on the two baffles 3 from the oil throwing hole group I and the oil throwing hole group II respectively, and the cooling oil flows to the other baffle 3 through the corresponding cooling channel 4 of the oil guide groove group on each baffle 3, reaches the oil throwing groove group and is thrown out, so that the structure is simple, the design is reasonable, the rapid heat dissipation in the rotor is realized, the heat dissipation effect is better, and the working performance of the rotor is ensured.

In addition to the above embodiments, the interior of the rotor may be cooled in other ways, for example: only the oil guide groove group is arranged on one baffle plate 3, only the oil throwing groove group is arranged on the other baffle plate 3, and only the oil throwing hole group is arranged at one end of the main shaft 1. During operation, cooling oil enters the main shaft 1 from an opening at one end of the main shaft 1, then enters the oil guide groove group on the corresponding baffle plate 3 from the oil throwing hole group, and the cooling oil changes to flow into the oil throwing groove group on the other baffle plate 3 along the cooling channel 4 after passing through the oil guide groove group on the baffle plate 3 and is thrown out.

Example 3

On the basis of embodiment 2, in this embodiment, the oil slinger group first includes a plurality of oil slingers first 5, and the plurality of oil slingers first 5 are uniformly distributed at intervals on one end of the main shaft 1 along the circumferential direction of the main shaft 1; the second oil throwing hole group comprises a plurality of second oil throwing holes 6, and the second oil throwing holes 6 are uniformly distributed on the other end of the main shaft 1 at intervals along the circumferential direction of the main shaft 1;

each oil guide groove group comprises a plurality of oil guide grooves 7, the plurality of oil guide grooves 7 are uniformly distributed on the surface of one side of the baffle plate 3, which is close to the laminated iron core 2, at intervals in a circumferential manner, and are in one-to-one correspondence and communicated with a plurality of oil throwing holes 5, and each oil guide groove 7 and the corresponding oil throwing hole 5 are respectively communicated with two ends of the corresponding cooling channel 4; every get rid of the oil groove group all includes a plurality of oil groove 8 that get rid of, a plurality of get rid of the oil groove 8 is circumference even interval distribution corresponds baffle 3 is close to on the one side surface of lamination iron core 2, and with a plurality of get rid of oil hole two 6 one-to-one and intercommunication, every get rid of the oil groove 8 with correspond get rid of oil hole two 6 respectively with correspond cooling channel 4's both ends intercommunication.

During operation, cooling oil enters the main shaft 1 from one opening of the main shaft 1, then enters a plurality of oil guide grooves 7 on two baffles 3 from a plurality of oil throwing holes I5 and a plurality of oil throwing holes II 6 respectively, the cooling oil flows to the other baffle 3 through a plurality of oil guide grooves 7 on each baffle 3 along the corresponding cooling channel 4, reaches a plurality of oil throwing grooves 8 on the other baffle 3 and is thrown out, and the cooling device has the advantages of simple structure, reasonable design, realization of rapid heat dissipation in the rotor, better heat dissipation effect and guarantee of the working performance of the rotor.

Example 4

Based on embodiment 3, in this embodiment, the first oil slinging holes 5 and the second oil slinging holes 6 are alternately distributed in sequence, and the oil guiding grooves 7 and the oil slinging grooves 8 on each baffle 3 are alternately distributed in sequence.

This scheme simple structure, reasonable in design, a plurality of oil slingers 5 and a plurality of oil slingers 6 are distributed rationally for oil groove 7 and oil slinger 8 on two baffles 3 can not influence each other, guarantee the normal clear of rotor cooling operation, thereby guarantee the normal cooling of rotor.

Preferably, in the present embodiment, the number of the cooling passages 4 is preferably six, and the six cooling passages 4 are uniformly spaced apart in the circumferential direction of the laminated core 2 inside the laminated core 2.

The number of the first oil throwing holes 5 and the second oil throwing holes 6 is preferably three, and the number of the oil guiding grooves 7 and the oil throwing grooves 8 is also preferably three.

In addition to the above embodiments, three oil guiding grooves 7 are arranged together and three oil slingers 8 are arranged together, for example, three oil guiding grooves 7 are located at one half of the corresponding baffle 3 and three oil slingers 8 are located at the other half of the baffle 3.

Example 5

In this embodiment, the two baffles 3 are each in a circular ring structure on the basis of any one of embodiments 3 to 4.

This scheme simple structure, reasonable in design both conveniently establishes baffle 3 cover on main shaft 1, conveniently distributes again and leads oil groove 7 and throws away oil groove 8.

Example 6

In this embodiment, each oil guiding groove 7 is composed of a first groove body and a second groove body, the first groove body extends along the radial direction corresponding to the baffle 3, two ends of the first groove body are open, and one end of the first groove body is communicated with the corresponding oil throwing hole 1; the second groove body is communicated with the other end of the first groove body and is communicated with the corresponding end of the cooling channel 4.

Each oil guide groove 7 consists of a groove body I and a groove body II, has a special structure, can be communicated with the oil throwing hole I5, can change the direction of cooling oil, and guides the cooling oil into the corresponding cooling channel 4, so that the cooling of the rotor is realized, and the cooling effect is better.

Based on the above scheme, the open part of one end of each groove body is communicated with the inner side of the corresponding baffle plate 3.

Preferably, in this embodiment, each of the channels is preferably an elongated channel.

Example 7

In this embodiment, each oil slinger 8 is composed of a third tank body and a fourth tank body, wherein the third tank body extends along the radial direction corresponding to the baffle 3, and a slinger hole 9 penetrating along the radial direction of the baffle 3 is formed in the third tank body; the fourth groove body is communicated with the third groove body and is communicated with the corresponding end of the cooling channel 4.

Each oil throwing groove 8 consists of a groove body III and a groove body IV, has a special structure, can be communicated with the corresponding cooling channel 4, and can throw cooling oil out of the throwing holes 9, so that the rotor is cooled, and the cooling effect is better.

Preferably, in this embodiment, each of the grooves is preferably an elongated groove.

Besides the above embodiment, each third groove body may be a rectangular groove, and both ends of the groove body are open, one end of the groove body is communicated with the fourth groove body, and the other end of the groove body extends to the circumferential surface of the corresponding baffle 3.

Example 8

In this embodiment, the two ends of the plurality of cooling channels 4 are respectively in an arc-shaped structure, and respectively extend along the circumferential direction of the main shaft 1; each second groove body and each fourth groove body are respectively in an arc-shaped structure, extend along the circumferential direction corresponding to the baffle plate 3, and are respectively communicated with the corresponding ends corresponding to the cooling channels 4.

The arc-shaped design of the end part of the cooling channel 4 can further increase the contact area of the cooling liquid and the inside of the rotor, and meanwhile, the shapes of the second groove body and the fourth groove body are matched with the end part of the cooling channel, so that the cooling effect of the rotor is further improved, and the cooling effect is better.

Example 9

On the basis of the above embodiments, the present embodiment also provides a motor including the laminated motor rotor with a heat dissipation function as described above.

The embodiment provides a motor, and this motor simple structure, reasonable in design utilizes the special structure of rotor self to dispel the heat to the rotor inside, effectively reduces the whole temperature of rotor, avoids the permanent demagnetization of magnet steel, improves motor life and performance reliability maintenance, and can alleviate the whole weight of rotor, promotes the response speed of motor.

Example 10

On the basis of the above embodiments, this embodiment also provides an electric vehicle including the motor as described above.

The embodiment provides an electric vehicle, and this electric vehicle simple structure, reasonable in design utilizes the special structure of rotor self to dispel the heat to the rotor inside, effectively reduces the whole temperature of rotor, avoids the permanent demagnetization of magnet steel, improves motor life and performance reliability maintenance, and can alleviate the whole weight of rotor, promotes the response speed of motor.

The working principle of the utility model is as follows:

during operation, cooling oil enters the main shaft 1 from an opening at one end of the main shaft 1, then enters a plurality of oil guide grooves 7 on two baffles 3 from a plurality of oil throwing holes I5 and a plurality of oil throwing holes II 6 respectively, and the cooling oil entering the plurality of oil guide grooves 7 flows to the other baffle 3 along the corresponding cooling channel 4 after changing to the corresponding oil guide groove 7 on each baffle 3, reaches the corresponding oil throwing groove 8 on the other baffle 3 and is thrown out, so that the rotor is rapidly cooled.

The utility model has the advantages that:

1. the cooling oil flow passage in the axial direction of the rotor is increased, the heat dissipation is carried out on the interior of the rotor through circulating cooling oil, the overall temperature of the rotor is effectively reduced, permanent demagnetization of magnetic steel is avoided, the service life of the motor is prolonged, and the reliability of performance is maintained;

2. the structure baffle has expandability, and can be adapted according to the actual flow passage section shape and flow passage number of the rotor lamination, so that the structure baffle can be used for motors with different types with more shape structures and power density;

3. through runner and baffle upper amount guiding hole structure of rotor core, alleviateed the whole weight of rotor, corresponding reduced the moment of inertia of rotor to promote the corresponding speed of motor.

In order to reduce the heat accumulation of the rotor core and improve the overall heat dissipation effect of the motor, the utility model adopts a rotor lamination and front and rear baffles with improved structures, a plurality of cooling flow channels are opened in the inner area of the rotor core, and cooling oil which flows along the radial direction and is thrown out by centrifugal force generated by the rotation of the rotor can flow in the flow channels axially by utilizing the newly designed baffles.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. The utility model provides a lamination formula motor rotor with heat dissipation function, includes main shaft (1) and lamination iron core (2), its characterized in that: the spindle is characterized by further comprising two baffles (3), wherein the inside of the spindle (1) is hollow, two ends of the spindle are open, and the parts, close to the two ends, of the side wall of the spindle are respectively provided with an oil throwing hole group I and an oil throwing hole group II which penetrate inside and outside; the two baffles (3) are respectively sleeved at two ends of the main shaft (1), the laminated iron core (2) is sleeved on the main shaft (1), is positioned between the two baffles (3) and is respectively attached to the two baffles (3), a plurality of cooling channels (4) with both open ends are arranged on the two baffles, and the cooling channels (4) respectively extend along the axial direction of the main shaft (1); cooling oil enters the main shaft (1) from one end of the main shaft (1), and enters between two baffle plates (3) and two ends of the laminated iron core (2) through the oil throwing hole group I and the oil throwing hole group II respectively and is thrown out.

2. The laminated motor rotor with heat dissipation function according to claim 1, wherein: the two baffles (3) are respectively provided with an oil guide groove group communicated with the oil throwing hole group I and the oil throwing hole group II, and the baffles are also respectively provided with an oil throwing groove group; the plurality of cooling channels (4) are divided into two groups, wherein two ends of one group of cooling channels (4) are respectively communicated with the oil throwing hole group I and the oil guide groove group, and two ends of the other group of cooling channels (4) are respectively communicated with the oil throwing hole group II and the oil throwing groove group.

3. The laminated motor rotor with heat dissipation function according to claim 2, wherein: the oil throwing hole group I comprises a plurality of oil throwing holes I (5), and the oil throwing holes I (5) are uniformly distributed at intervals on one end of the main shaft (1) along the circumferential direction of the main shaft (1); the second oil throwing hole group comprises a plurality of second oil throwing holes (6), and the second oil throwing holes (6) are uniformly distributed at intervals on the other end of the main shaft (1) along the circumferential direction of the main shaft (1);

each oil guide groove group comprises a plurality of oil guide grooves (7), the plurality of oil guide grooves (7) are uniformly distributed on the surface of one side, close to the laminated iron core (2), of the baffle plate (3) at intervals in a circumferential manner, the oil guide grooves are in one-to-one correspondence and are communicated with a plurality of oil throwing holes (5), and each oil guide groove (7) and the corresponding oil throwing hole (5) are respectively communicated with two ends of the corresponding cooling channel (4); every get rid of oil groove group all includes a plurality of oil groove (8) that get rid of, a plurality of get rid of oil groove (8) are circumference even interval distribution corresponds baffle (3) are close to on the surface of one side of lamination core (2), and with a plurality of get rid of oil hole two (6) one-to-one and intercommunication, every get rid of oil groove (8) and correspondence get rid of oil hole two (6) respectively with correspond cooling channel (4) both ends intercommunication.

4. A laminated motor rotor with heat dissipation function as defined in claim 3, wherein: the oil throwing holes I (5) and II (6) are alternately distributed in sequence, and the oil guide grooves (7) and 8) on the baffle plate (3) are alternately distributed in sequence.

5. A laminated motor rotor with heat dissipation function as defined in claim 3, wherein: the two baffles (3) are respectively in a circular ring structure.

6. The laminated motor rotor with heat dissipation function according to claim 5, wherein: each oil guide groove (7) consists of a groove body I and a groove body II, wherein the groove body I extends along the radial direction of the corresponding baffle plate (3), two ends of the groove body I are open, and one end of the groove body I is communicated with the corresponding oil throwing hole I (5); the second groove body is communicated with the other end of the first groove body and is communicated with the corresponding end of the cooling channel (4).

7. The laminated motor rotor with heat dissipation function according to claim 6, wherein: each oil slinging groove (8) consists of a groove body III and a groove body IV, wherein the groove body III extends along the radial direction corresponding to the baffle plate (3), and a slinging hole (9) penetrating along the radial direction of the baffle plate (3) is arranged in the groove body III; the groove body IV is communicated with the groove body III and is communicated with the corresponding end of the corresponding cooling channel (4).

8. The laminated motor rotor with heat dissipation function according to claim 7, wherein: both ends of the plurality of cooling channels (4) are respectively arc-shaped structures and respectively extend along the circumferential direction of the main shaft (1); each second groove body and each fourth groove body are respectively in an arc-shaped structure, extend along the circumferential direction of the corresponding baffle plate (3), and are respectively communicated with the corresponding ends of the corresponding cooling channels (4).

9. An electric motor, characterized in that: a laminated motor rotor having a heat dissipation function as defined in any one of claims 1 to 8.

10. An electric vehicle, characterized in that: comprising the motor of claim 9.