CN214412474U

CN214412474U - Motor end cover, transmission structure and car

Info

Publication number: CN214412474U
Application number: CN202120392746.7U
Authority: CN
Inventors: 赵凯; 苏振
Original assignee: Aiways Automobile Shanghai Co Ltd
Current assignee: Aiways Automobile Shanghai Co Ltd
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-10-15
Anticipated expiration: 2031-02-22

Abstract

The application relates to a motor end cover, a transmission structure and an automobile. This motor end cover includes curb plate, panel and installation department, and the panel is connected in the curb plate, and encloses with the curb plate and close and form the open bearing chamber of one end, and the installation department link up is connected in the panel, and is located the one side that deviates from the bearing chamber of panel, and the installation department has the mounting hole that just communicates the bearing chamber that is used for installing the bearing. The panel is provided with a first end connected with the mounting part and a second end connected with the side plate, and the first end of the panel is sunken towards the bearing chamber relative to the second end of the panel, so that an air cooling channel is formed between the panel and the outer wall of the mounting part. Compared with the prior art, the cooling of the bearing can be realized at a high speed, the problem of motor faults caused by the fact that the bearing cannot timely dissipate heat when the electric drive system runs at a high rotating speed, a large torque and a high power is avoided, additional equipment such as a radiator does not need to be additionally arranged, the manufacturing cost is reduced, and the light-weight effect of the electric drive system is further facilitated.

Description

Motor end cover, transmission structure and car

Technical Field

The application relates to the technical field of new energy electric drive, in particular to a motor end cover, a transmission structure and an automobile.

Background

At present electric drive technical field, the trinity transmission structure that has integrated motor, reduction gear and controller is the mainstream form. The performance requirements of high speed, large torque and high power density provide higher requirements for the heat dissipation of the motor, the speed reducer and the controller.

The existing heat dissipation structure of the electric drive bearing mainly has two forms, one form is that a cooling water channel is arranged in a shell of a motor and a controller, a speed reducer per se mainly depends on internal lubricating oil to splash and the surface of the shell to radiate and dissipate heat, the motor bearing does not have a heat dissipation structure, and the motor bearing is easy to burn down under high rotating speed, so that the improvement of the rotating speed of the motor is seriously influenced. The other mode is that the speed reducer and the motor are integrated to share the shell and penetrate through the shell, the speed reducer oil is used for dissipating heat of the motor, the speed reducer, a motor bearing and other parts, a radiator is added, oil in the radiator exchanges heat with external cooling liquid to achieve a heat dissipation effect, parts such as an oil filter, the radiator, an oil pump and the like need to be arranged in the mode, the overall cost is increased, the oil cooling is severe in design and selection and check of the parts inside the motor, and the motor cost is increased.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a motor end cover, a transmission structure and an automobile which overcome the above-mentioned disadvantages, in order to solve the problems of poor heat dissipation effect or high heat dissipation cost of the electric drive bearing in the prior art.

An electric machine end cap comprising:

a side plate;

the panel is connected with the side plate and forms a bearing chamber with one open end by enclosing with the side plate; and

the mounting part is connected with the panel in a penetrating way and is positioned on one side of the panel, which is far away from the bearing chamber, and the mounting part is provided with a mounting hole which is used for mounting a bearing and is communicated with the bearing chamber;

the panel is provided with a first end connected with the mounting part and a second end connected with the side plate, and the first end is opposite to the second end and faces the bearing chamber to be sunken, so that the panel and the outer wall of the mounting part form an air cooling channel.

In one embodiment, the side plate is rotatably arranged along a preset axis, the panel covers one axial end of the side plate, and the other axial end of the side plate forms the opening;

the mounting holes are arranged along the preset axis.

In one embodiment, an end of the mounting portion facing away from the panel is flush with a second end of the panel.

In one embodiment, the side plate is provided with a water cooling channel.

In one embodiment, one end of the side plate, which forms the opening, is provided with a counter bore, and the water cooling channel penetrates through the bottom wall of the counter bore and is annularly arranged along the bottom wall of the counter bore.

In one embodiment, the air cooling structure further comprises a first reinforcing rib, wherein the first reinforcing rib is positioned in the air cooling channel and connects the panel and the mounting part.

In one embodiment, the bearing assembly further comprises a second reinforcing rib, wherein the second reinforcing rib is located in the bearing chamber and is connected with the panel and the side plate.

In one embodiment, the motor is of a one-piece construction.

In addition, a transmission structure is also provided, which comprises a bearing and the motor end cover provided in any of the above embodiments, wherein the bearing is mounted in the mounting hole.

In addition, an automobile is further provided, and the automobile comprises the transmission structure provided by any one of the embodiments.

Above-mentioned motor end cover, when practical application, when the car was in high speed, a large amount of air formed the wind vortex, the cooling installation department along panel entering forced air cooling way from the second end of panel. The installation department after the cooling carries out heat exchange with high temperature bearing, and then cools down the bearing, realizes the cooling to the bearing.

Compared with the prior art, the cooling of the bearing can be realized at a high speed, the problem of motor faults caused by the fact that the bearing cannot timely dissipate heat when an electric drive system runs at a high rotating speed, a large torque and a high power is avoided, and meanwhile, the motor end cover is simple in structure, does not need to be additionally provided with additional equipment such as a radiator and the like, and is favorable for reducing the manufacturing cost. In addition, the motor end cover not only can dissipate heat of the bearing, but also can play a weight reduction effect on the motor end cover due to the formation of the air cooling channel, and is favorable for achieving the lightweight effect of an electric drive system.

Drawings

FIG. 1 is an exploded view of a transmission configuration in one embodiment of the subject application;

FIG. 2 is a cross-sectional view of the transmission shown in FIG. 1;

FIG. 3 is a front view of the transmission shown in FIG. 1;

fig. 4 is a rear view of the transmission structure shown in fig. 3.

Description of reference numerals:

1. a motor end cover; 11. a side plate; 12. a panel; 13. an installation part; 131. mounting holes; 14. an air cooling duct; 15. a water cooling channel; 16. a first reinforcing rib; 17. a second reinforcing rib; 18. steel jacket; 19. a bearing chamber; 2. a bearing; 3. a snap ring.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and fig. 2, an embodiment of the present application provides a motor end cover 1, which includes a side plate 11, a panel 12 and a mounting portion 13, wherein the panel 12 is connected to the side plate 11 and encloses with the side plate 11 to form a bearing chamber 19 with an open end, the mounting portion 13 is connected to the panel 12 in a penetrating manner and is located on a side of the panel 12 away from the bearing chamber 19, and the mounting portion 13 has a mounting hole 131 for mounting a bearing 2 and communicating with the bearing chamber 19. Wherein, the panel 12 has a first end connected with the mounting part 13 and a second end connected with the side plate 11, and the first end of the panel 12 is recessed toward the bearing chamber 19 relative to the second end of the panel 12, so that the air cooling passage 14 is formed between the panel 12 and the outer wall of the mounting part 13.

In practical applications, when the automobile is at a high speed, a large amount of air enters the air cooling duct 14 from the second end of the panel 12 along the panel 12 to form an air vortex, and the air vortex cools the mounting portion 13. The cooled mounting portion 13 exchanges heat with the high-temperature bearing 2, and then cools the bearing 2, thereby cooling the bearing 2.

Compared with the prior art, the cooling of the bearing 2 can be realized at a high speed, the problem of motor faults caused by the fact that the bearing 2 cannot timely dissipate heat when an electric drive system runs at a high rotating speed, a large torque and a high power is avoided, and meanwhile, the motor end cover 1 is simple in structure, does not need to be additionally provided with extra equipment such as a radiator and the like, and is favorable for reducing the manufacturing cost. In addition, the motor end cover 1 can not only dissipate heat of the bearing 2, but also play a role in reducing weight of the motor end cover 1 due to the formation of the air cooling channel 14, and is beneficial to achieving the effect of light weight of an electric drive system.

It will be appreciated that the projections of the first end of the panel 12 and the second end of the panel 12 on the axis of the mounting hole 131 are offset from each other to achieve the depression of the second end of the panel 12 into the bearing chamber 19.

In some embodiments, the radial dimension of the panel 12 tapers from the second end of the panel 12 to the first end of the panel 12. At this time, when the air enters the air cooling duct 14 along the panel 12, the resistance of the panel 12 is small, and the air can quickly reach the air cooling duct 14. Thus, the cooling efficiency is improved.

Further, the second end of the panel 12 is in transitional connection with the side plate 11 to reduce wind resistance.

In some embodiments, the side plate 11 is rotatably disposed along a predetermined axis, the panel 12 covers one axial end of the side plate 11, the other axial end of the side plate 11 forms an opening of the bearing chamber 19, and the mounting holes 131 are disposed along the predetermined axis. The other axial end of the side plate 11 is used for being mounted on the motor body (the motor body is the part of the motor except the motor end cover 1), and at this time, the side plate 11 is a revolving body, and the mounting hole 131 is arranged along the preset axis, so that the stability of the motor during operation is facilitated, and the noise caused by eccentric vibration is avoided.

In some embodiments, referring to fig. 2, one end of the mounting portion 13 away from the panel 12 is flush with the second end of the panel 12, at this time, the volume of the air cooling duct 14 formed by the mounting portion 13 and the panel 12 is large, the cooling rate of the mounting portion 13 is high, the cooling efficiency of the bearing 2 can be ensured, meanwhile, the appearance of the motor end cover 1 is attractive, and the protruding mounting portion 13 is prevented from interfering with other structures outside the motor end cover 1.

In some embodiments, referring to fig. 2 and 4, the side plates 11 are provided with water cooling channels 15. In actual operation, cooling water flows through the water cooling passage 15, and the temperature of the side plate 11 is lowered by the cooling water. This can further reduce the temperature of the mounting portion 13, and improve the heat dissipation efficiency of the bearing 2. And meanwhile, the cooled side plate 11 is connected with the motor body, and the motor body can be cooled. So, realized the heat dissipation of motor body and bearing 2 through a motor end cover 1 for motor end cover 1's function is more various.

In the embodiment, referring to fig. 2, the end of the side plate 11 forming the opening has a counter bore, and the water cooling channel 15 penetrates through the bottom wall of the counter bore and is annularly arranged along the bottom wall of the counter bore. At this time, the water cooling channel 15 is an annular water tank penetrating through the bottom wall of the counter bore, and when cooling water is introduced into the annular water tank, the cooling water can be uniformly cooled at all places of the side plate 11, so that the improvement of the cooling efficiency of the side plate 11 is facilitated, and the cooling efficiency of the whole motor is further improved.

In some embodiments, referring to fig. 2 and 3, the motor end cover 1 further includes a first reinforcing rib 16, and the first reinforcing rib 16 is located in the air cooling duct 14 and connects the panel 12 and the mounting portion 13. In this case, the first reinforcing rib 16 can reinforce the strength of the face plate 12, and further, the strength of the entire motor end cover 1 can be improved.

Further, the number of the first reinforcing beads 16 is plural, and the plural first reinforcing beads 16 are arranged in a circumferential array along the axis of the mounting hole 131. At this time, the strength of the face plate 12 is further improved by providing the plurality of first reinforcing ribs 16, and the wind pressure resistance of the motor end cover 1 is improved.

In some embodiments, referring to fig. 4, the motor end cover 1 further includes a second reinforcing rib 17, the second reinforcing rib 17 is located in the bearing chamber 19, and connects the face plate 12 and the side plate 11. At this time, the second reinforcing rib 17 contributes to improving the strength of the face plate 12, and further, the strength of the entire motor end cover 1.

Further, the number of the second reinforcing ribs 17 is plural, and the plural second reinforcing ribs 17 are arranged in a circumferential array along the axis of the mounting hole 131. At this time, the strength of the panel 12 is further improved by providing the plurality of second reinforcing ribs 17, and the wind pressure resistance of the motor end cover 1 is improved.

In some embodiments, referring to fig. 1 and 2, the motor end cover 1 further comprises a steel sleeve 18, the steel sleeve 18 being disposed within the mounting hole 131 for mounting the bearing 2. Preferably, the steel sleeve 18 is cast in the mounting hole 131 of the mounting portion 13 by high pressure die casting. In practice, the bearing 2 is a clearance fit within the steel sleeve 18.

In some embodiments, the motor end cover 1 is an integrated structure, and the structural strength of the motor end cover 1 is further improved by an integrated design. Wherein, the motor end cover 1 can be molded together by casting. The motor end cover 1 is integrally formed by integrally forming the side plate 11, the panel 12, the mounting part 13, the first reinforcing rib 16 and the second reinforcing rib 17.

The motor end cover 1 that this application embodiment provided, when practical application, when the car is at high speed, a large amount of air form the vortex in panel 12's second end along panel 12 entering air-cooled duct 14, cooling installation portion 13. The cooled mounting portion 13 exchanges heat with the high-temperature bearing 2, and then cools the bearing 2, thereby cooling the bearing 2.

In addition, an embodiment of the present application further provides a transmission structure, where the transmission structure includes a bearing 2 and the motor end cover 1 provided in any of the above embodiments, and the bearing 2 is installed in the installation hole 131 of the motor end cover 1.

In practical applications, when the automobile is at a high speed, a large amount of air enters the air cooling duct 14 from the second end of the panel 12 along the panel 12 to form an air vortex, and the air vortex cools the mounting portion 13. The cooled mounting portion 13 exchanges heat with the high-temperature bearing 2, and then cools the bearing 2, thereby cooling the bearing 2. Compared with the prior art, the cooling of the bearing 2 can be realized at a high speed, the problem of motor faults caused by the fact that the bearing 2 cannot timely dissipate heat when an electric drive system runs at a high rotating speed, a large torque and a high power is avoided, and meanwhile, the motor end cover 1 is simple in structure, does not need to be additionally provided with extra equipment such as a radiator and the like, and is favorable for reducing the manufacturing cost. In addition, the motor end cover 1 can not only dissipate heat of the bearing 2, but also play a role in reducing weight of the motor end cover 1 due to the formation of the air cooling channel 14, and is beneficial to achieving the effect of light weight of an electric drive system.

Because this transmission structure includes above-mentioned motor end cover 1, therefore it still possesses the other beneficial effects of above-mentioned motor end cover 1, does not describe herein any more.

In some embodiments, the motor end cover 1 further includes a steel sleeve 18, the steel sleeve 18 is located in the mounting hole 131, the bearing 2 is mounted in the steel sleeve 18, and the transmission structure further includes a snap ring 3, and the snap ring 3 is snapped in the steel sleeve 18 and located on one side of the bearing 2 close to the opening.

During actual assembly, install bearing 2 in steel bushing 18 through clearance fit earlier to offset with the shaft shoulder in the steel bushing 18, snap ring 3 elasticity card is established in the buckle department in the face of open one end of steel bushing 18, and offsets with being close to in the face of open one end of bearing 2, the location of bearing 2 of so realizing.

It is understood that the transmission structure also includes other structures, such as a motor shaft, a reducer, etc., which can be referred to in the prior art specifically, and are not described or limited herein.

In addition, the embodiment of the application also provides an automobile, and the automobile comprises the transmission structure provided in any one of the embodiments. Since the automobile comprises the transmission structure, the automobile also has all the beneficial effects of the transmission structure, and the details are not repeated herein.

It is understood that the vehicle may also include other structures, such as a traveling mechanism, a brake system, etc., which may be referred to in the art and will not be described or limited herein.

Preferably, the automobile is a new energy electric driving automobile.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An electric machine end cap, comprising:

a side plate;

2. The motor end cover according to claim 1, wherein the side plate is rotatably arranged along a preset axis, the panel covers one axial end of the side plate, and the other axial end of the side plate forms the opening;

the mounting holes are arranged along the preset axis.

3. The motor end cover of claim 1, wherein an end of the mounting portion facing away from the faceplate is flush with a second end of the faceplate.

4. The motor end cover according to claim 1, wherein a water cooling channel is provided on the side plate.

5. The motor end cover according to claim 4, wherein the end of the side plate forming the opening is provided with a counter bore, and the water cooling channel penetrates through the bottom wall of the counter bore and is annularly arranged along the bottom wall of the counter bore.

6. The motor end cover according to any one of claims 1 to 5, further comprising a first reinforcing rib located in the air cooling duct and connecting the face plate and the mounting portion.

7. The motor end cover according to any one of claims 1 to 5, further comprising a second stiffener located in the bearing chamber and connecting the face plate and the side plate.

8. The motor end cap of any one of claims 1-5, wherein the motor is a unitary structure.

9. A transmission structure comprising a motor end cover according to any one of claims 1 to 8 and a bearing mounted to the mounting hole.

10. A motor vehicle, characterized by comprising the transmission structure according to claim 9.