Driving assembly and vehicle

Abstract

The utility model provides a driving assembly and a vehicle. The driving assembly comprises a driving motor, a conducting ring and a conducting baffle. A driving motor, a conductive ring and a conductive baffle plate; the driving motor comprises a motor shell and a motor shaft, and the conductive baffle is connected to the motor shell; and the conductive ring is arranged on the conductive baffle plate and is in contact with the motor shaft of the driving motor so as to conduct axial charges on the motor shaft to the motor shell. The conductive ring is arranged on the conductive baffle and is in contact with the motor shaft of the driving motor, axial charges on the motor shaft can be effectively conducted to the conductive baffle and then transmitted to the motor shell from the conductive baffle, and the motor shell is grounded, so that the axial charges are neutralized, charge accumulation and electrostatic interference on the motor shaft are reduced, and the service life of the motor is prolonged. And the working efficiency and service life of the motor are improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle manufacturing, and in particular to a drive assembly and a vehicle. Background Art

[0002] The integrated drive assembly motor is prone to the risk of axial movement of the bearing during operation. At the same time, the conductive ring cannot be arranged after the bearing is installed at the motor output end. When the high-voltage platform drive assembly is running for a long time, excessive shaft current will accumulate on the motor shaft. The electrical corrosion caused by the shaft current will damage the bearing balls and raceways, thereby generating operating noise and affecting the service life of the bearing. In severe cases, the bearing will lock, affecting the operation of the motor and driving safety.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The present application provides a drive assembly and a vehicle to solve the technical problem that the existing drive assembly is prone to electrical erosion, which in turn corrodes the bearings.

[0005] The first aspect of the utility model provides a driving assembly, including a driving motor, a conductive ring and a conductive baffle; the driving motor includes a motor housing and a motor shaft, and the conductive baffle is connected to the motor housing; the conductive ring is arranged on the conductive baffle and contacts with the motor shaft of the driving motor to conduct the axial charge on the motor shaft to the motor housing.

[0006] In this solution, the connection method between the motor housing and the conductive baffle is simple and reliable, which can effectively protect the drive motor and the conductive ring, improve the overall stability and reliability, and at the same time fix the conductive ring to divert the axial charge on the motor shaft. The conductive ring is set on the conductive baffle and contacts the motor shaft of the drive motor, which can effectively divert the axial charge on the motor shaft to the conductive baffle, and then transfer it from the conductive baffle to the motor housing. Since the motor housing is grounded, the axial charge will be neutralized, thereby reducing the charge accumulation and electrostatic interference on the motor shaft, and improving the working efficiency and life of the motor. By diverting the axial charge on the motor shaft, the charge accumulation between the motor housing and other components can be reduced, the impact of electrostatic interference on the entire system can be reduced, and the stability and anti-interference ability of the system can be improved.

[0007] In a further solution of the utility model, the motor housing is formed with a bearing cavity; the drive assembly also includes a bearing, which is arranged in the bearing cavity and is clamped between the conductive ring and the motor housing in the axial direction.

[0008] In this solution, the setting of the bearing can support and fix the motor shaft, enhancing the stability and reliability of the drive assembly. The use of bearings can reduce the friction and vibration of the motor shaft during operation, thereby reducing energy loss and noise generation, and improving the efficiency and comfort of the entire system. The bearing is clamped between the conductive ring and the motor housing, which can stabilize the bearing and prevent the bearing from shaking with the motor shaft. This can effectively avoid the negative effects of charge accumulation and electrostatic interference on the motor and system, improve the reliability and performance of the motor, and the conductive ring can also prevent axial charge from eroding the bearing by conducting axial charge.

[0009] In a further solution of the utility model, the conductive ring includes a ring body and a contact portion, the ring body is connected to the conductive baffle, the contact portion is radially extended on the inner circumferential wall of the ring body, and the contact portion contacts the motor shaft.

[0010] In this solution, the ring body is connected to the conductive baffle, ensuring the conductive ring is firmly connected to the entire motor housing and the conductive baffle. The contact portion is radially extended and in contact with the motor shaft, which can effectively guide the axial charge on the motor shaft from the conductive baffle to the motor housing. This can reduce the charge accumulation and electrostatic interference on the motor shaft, avoid charge erosion of the bearing, and further improve the working efficiency and life of the motor. Through the direct contact between the contact portion and the motor shaft, the contact resistance between the motor shaft and the conductive ring can also be reduced, the guiding effect is improved, and the impact of electrostatic interference on the entire system is further reduced.

[0011] In a further solution of the utility model, a plurality of contact parts are arranged at intervals in the circumferential direction of the ring body, and the plurality of contact parts are brushes.

[0012] In this scheme, by arranging multiple brushes at intervals on the circumference of the ring body, the surface area in contact with the motor shaft can be increased, thereby improving the drainage effect of the axial charge on the motor shaft. The contact between multiple contact parts and the motor shaft can effectively reduce the charge accumulation and electrostatic interference on the motor shaft, further improving the working efficiency and life of the motor. Since the arrangement of the brushes can provide more contact points with the motor shaft, the contact resistance can also be reduced, further improving the drainage effect and reducing the impact of electrostatic interference on the entire system.

[0013] In a further solution of the utility model, the conductive baffle forms a conductive cavity, and the conductive ring is arranged in the conductive cavity.

[0014] In this solution, by forming a conductive cavity in the conductive baffle, the conductive baffle can be confined inside the conductive baffle to prevent external impurities from damaging the conductive ring and ensure that the contact portion on the conductive ring is always in contact with the motor shaft.

[0015] In a further solution of the utility model, a through hole for the motor shaft to pass through is provided on the conductive baffle, the through hole is communicated with the conductive cavity, and the conductive ring is coaxially arranged with the through hole.

[0016] In this solution, the conductive ring and the through hole are coaxially arranged to ensure the alignment and stability between the conductive ring and the motor shaft, avoiding abnormal operation or damage caused by position offset. The through hole for the motor shaft to pass through on the baffle also facilitates the installation and maintenance of the motor shaft, improving the operability and maintenance efficiency of the system.

[0017] In a further solution of the utility model, the conductive baffle includes a connecting column and a connecting portion, an extension portion and a limiting portion arranged in sequence in the axial direction, the connecting column is arranged on the connecting portion; the extension portion and the limiting portion form a conductive cavity, the via hole is opened on the limiting portion, and the connecting portion is connected to the motor housing.

[0018] In this solution, the extension part and the limiting part form a conductive cavity. With this design, the via hole can be opened on the limiting part, ensuring the stability and consistency when the conductive ring and the via hole are coaxially arranged. The connecting part is connected to the motor housing. This design can form a tight connection between the conductive baffle and the motor housing, which is conducive to the installation and use of the entire system. At the same time, the connection position of the connecting part also helps the conductive baffle to work in coordination with other components, that is, the axial charge guided by the conductive ring can be guided from the conductive baffle to the motor housing.

[0019] In a further solution of the utility model, the conductive ring is located between the limiting portion and the bearing in the axial direction, and the bearing abuts against the connecting portion and the conductive ring in the axial direction.

[0020] In this solution, the conductive ring is located between the limiter and the bearing. This design can effectively fix the position of the conductive ring, ensure the distance and alignment between it and the bearing, and thus improve the conductivity and stability of the motor shaft. The bearing abuts against the connecting part and the conductive ring in the axial direction. This arrangement can increase the contact area between the bearing and the conductive ring, improve the support and conductivity of the motor shaft during rotation, and further improve the work efficiency and reliability of the system. Through the design of the bearing and the conductive ring, the friction and wear caused by axial vibration can be reduced, the service life of the system can be extended, and the electrical erosion of the bearing by the axial charge can be avoided.

[0021] In a further solution of the utility model, the conductive baffle includes a plurality of connection columns, the plurality of connection columns are arranged at intervals in the circumferential direction, connection holes are formed on the connection columns, and the connection holes are arranged parallel to the axis of the via hole.

[0022] In this solution, by arranging a plurality of connection columns at axial intervals, the connection between the motor housing and the conductive baffle can be strengthened, thereby preventing the conductive baffle from loosening due to vibration of the drive motor.

[0023] In a further solution of the utility model, a plurality of press-fitting grooves are provided at intervals in the circumferential direction on the ring body.

[0024] In this solution, by providing press-fitting grooves at intervals in the axial direction of the ring body, the conductive ring can be press-fitted into the baffle through the press-fitting grooves, thereby stabilizing the connection between the conductive ring and the conductive baffle.

[0025] A second aspect of the utility model provides a vehicle, comprising the drive assembly provided by the first aspect of the utility model.

[0026] In summary, the drive assembly and vehicle provided by the present application have at least the following beneficial effects:

[0027] The connection method between the motor housing and the conductive baffle is simple and reliable, which can effectively protect the drive motor and the conductive ring, improve the overall stability and reliability, and at the same time fix the conductive ring to divert the axial charge on the motor shaft. The conductive ring is set on the conductive baffle and contacts the motor shaft of the drive motor, which can effectively divert the axial charge on the motor shaft to the conductive baffle, and then transfer it from the conductive baffle to the motor housing. Since the motor housing is grounded, the axial charge will be neutralized, thereby reducing the charge accumulation and electrostatic interference on the motor shaft, and improving the working efficiency and life of the motor. By diverting the axial charge on the motor shaft, the charge accumulation between the motor housing and other components can be reduced, the impact of electrostatic interference on the entire system can be reduced, and the stability and anti-interference ability of the system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation or the prior art description. Obviously, the drawings described below are some implementations of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A cross-sectional view of a drive assembly provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the structure of a drive assembly provided in an embodiment of the present application;

[0031] Figure 3 A cross-sectional view of the drive assembly provided in an embodiment of the present application without the drive motor;

[0032] Figure 4 An axonometric view of a conductive ring provided for an embodiment of the present application; and

[0033] Figure 5An axonometric view of a baffle provided in an embodiment of the present application.

[0034] The reference numerals are as follows:

[0035] 100, baffle; 100A, conductive cavity; 110, connecting portion; 120, extending portion; 130, limiting portion; 130A, via hole; 140, connecting column; 140A, connecting hole;

[0036] 200, bearings;

[0037] 300, conductive ring; 310, ring body; 320, contact portion; 310A, press-fit groove;

[0038] 410, motor housing; 410A, bearing cavity. DETAILED DESCRIPTION

[0039] In the description of the present application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear to indicate the orientation or position relationship, unless otherwise specified, they are understood to be based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0040] In addition, if there is a feature defined as "first" or "second", it is only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Features defined as "first" or "second" may explicitly or implicitly include at least one of the defined features. If there is a description of "plurality", the general meaning is to include at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed" and so on should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection, it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0042] In the description of this specification, if the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0043] The first aspect of the utility model provides a driving assembly, including a driving motor, a conductive ring 300 and a conductive baffle 100; the driving motor includes a motor housing 410 and a motor shaft, and the conductive baffle 100 is connected to the motor housing 410; the conductive ring 300 is arranged on the conductive baffle 100 and contacts with the motor shaft of the driving motor to conduct the axial charge on the motor shaft to the motor housing 410.

[0044] In this solution, the connection method between the motor housing 410 and the conductive baffle 100 is simple and reliable, which can effectively protect the drive motor and the conductive ring 300, improve the overall stability and reliability, and at the same time, the conductive ring 300 can be fixed to divert the axial charge on the motor shaft. The conductive ring 300 is arranged on the conductive baffle 100 and contacts the motor shaft of the drive motor, which can effectively divert the axial charge on the motor shaft to the conductive baffle 100, and then transfer it from the conductive baffle 100 to the motor housing 410. Since the motor housing 410 is grounded, the axial charge will be neutralized, thereby reducing the charge accumulation and electrostatic interference on the motor shaft, and improving the working efficiency and life of the motor. By diverting the axial charge on the motor shaft, the charge accumulation between the motor housing 410 and other components can be reduced, the impact of electrostatic interference on the entire system can be reduced, and the stability and anti-interference ability of the system can be improved.

[0045] In a specific application, the conductive ring 300 and the conductive baffle 100 are generally made of the same material, and the bearing 200 is made of a non-conductive material. Generally speaking, the bearing 200 is a ceramic bearing 200.

[0046] In a further embodiment of the present invention, the motor housing 410 is formed with a bearing cavity 410A; the drive assembly further includes a bearing 200 , which is disposed in the bearing cavity 410A and is clamped axially between the conductive ring 300 and the motor housing 410 .

[0047] In this solution, the setting of the bearing 200 can support and fix the motor shaft, enhancing the stability and reliability of the drive assembly. The use of the bearing 200 can reduce the friction and vibration of the motor shaft during operation, thereby reducing energy loss and noise generation, and improving the efficiency of the entire system. The bearing 200 is clamped between the conductive ring 300 and the motor housing 410, and the bearing 200 can be axially limited to prevent the bearing 200 from shaking with the motor shaft. This can effectively avoid the negative impact of charge accumulation and electrostatic interference on the motor and the system, improve the reliability and performance of the motor, and the conductive ring 300 can also prevent the axial charge from eroding the bearing 200 by channeling the axial charge.

[0048] In a further embodiment of the present invention, the conductive ring 300 includes a ring body 310 and a contact portion 320 . The ring body 310 is connected to the conductive baffle 100 . The contact portion 320 is radially extended on the inner wall of the ring body 310 , and the contact portion 320 contacts the motor shaft.

[0049] In this solution, the ring body 310 is connected to the conductive baffle 100, ensuring the firm connection between the conductive ring 300 and the entire motor housing 410 and the conductive baffle 100. The contact portion 320 is radially extended and in contact with the motor shaft, which can effectively guide the axial charge on the motor shaft from the conductive baffle 100 to the motor housing 410. This can reduce the charge accumulation and electrostatic interference on the motor shaft, avoid charge erosion of the bearing 200, and further improve the working efficiency and life of the motor. Through the direct contact between the contact portion 320 and the motor shaft, the contact resistance between the motor shaft and the conductive ring 300 can also be reduced, the guiding effect is improved, and the impact of electrostatic interference on the entire system is further reduced.

[0050] In a further solution of the present invention, a plurality of contact portions 320 are arranged at intervals in the circumferential direction of the ring body 310 , and the plurality of contact portions 320 are brushes.

[0051] In this solution, by arranging multiple brushes at intervals in the circumferential direction of the ring body 310, the surface area in contact with the motor shaft can be increased, thereby improving the drainage effect of the axial charge on the motor shaft. The contact between the multiple contact parts 320 and the motor shaft can effectively reduce the charge accumulation and electrostatic interference on the motor shaft, further improving the working efficiency and life of the motor. Since the arrangement of the brushes can provide more contact points with the motor shaft, the contact resistance can also be reduced, further improving the drainage effect and reducing the impact of electrostatic interference on the entire system.

[0052] In a further solution of the present invention, the conductive baffle 100 forms a conductive cavity 100A, and the conductive ring 300 is disposed in the conductive cavity 100A.

[0053] In this solution, by forming a conductive cavity 100A in the conductive baffle 100, the conductive baffle 100 can be confined inside the conductive baffle 100 to prevent external impurities from damaging the conductive ring 300 and ensure that the contact portion 320 on the conductive ring 300 is always in contact with the motor shaft.

[0054] In a further solution of the utility model, a through hole 130A for the motor shaft to pass through is formed on the conductive baffle 100 , the through hole 130A is connected to the conductive cavity 100A, and the conductive ring 300 is coaxially arranged with the through hole 130A.

[0055] In this solution, the conductive ring 300 and the through hole 130A are coaxially arranged to ensure the alignment and stability between the conductive ring 300 and the motor shaft, avoiding abnormal operation or damage caused by position offset. The through hole 130A provided on the baffle 100 for the motor shaft to pass through also facilitates the installation and maintenance of the motor shaft, thereby improving the operability and maintenance efficiency of the system.

[0056] In a further solution of the utility model, the conductive baffle 100 includes a connecting column 140 and a connecting portion 110, an extension portion 120 and a limiting portion 130 arranged in sequence in the axial direction, the connecting column 140 is arranged on the connecting portion 110; the extension portion 120 and the limiting portion 130 form a conductive cavity 100A, a via 130A is opened on the limiting portion 130, and the connecting portion 110 is connected to the motor housing 410.

[0057] In this solution, the extension portion 120 and the limiting portion 130 form a conductive cavity 100A. Through this design, the via 130A can be opened on the limiting portion 130, ensuring the stability and consistency when the conductive ring 300 and the via 130A are coaxially arranged. The connecting portion 110 is connected to the motor housing 410. This design can form a tight connection between the conductive baffle 100 and the motor housing 410, which is conducive to the installation and use of the entire system. At the same time, the connection position of the connecting portion 110 also helps the conductive baffle 100 to work in coordination with other components, that is, the axial charge guided by the conductive ring 300 can be guided from the conductive baffle 100 to the motor housing 410.

[0058] In a further solution of the present invention, the conductive ring 300 is located between the limiting portion 130 and the bearing 200 in the axial direction, and the bearing 200 abuts against the connecting portion 110 and the conductive ring 300 in the axial direction.

[0059] In this solution, the conductive ring 300 is located between the limiting portion 130 and the bearing 200. This design can effectively fix the position of the conductive ring 300, ensure the distance and alignment between the conductive ring 300 and the bearing 200, and thus improve the conductivity and stability of the motor shaft. The bearing 200 abuts against the connecting portion 110 and the conductive ring 300 in the axial direction. This arrangement can increase the contact area between the bearing 200 and the conductive ring 300, improve the support and conductivity of the motor shaft during rotation, and further improve the work efficiency and reliability of the system. Through the design of the bearing 200 and the conductive ring 300, the friction and wear caused by axial vibration can be reduced, the service life of the system can be extended, and the electrical erosion of the bearing 200 caused by the axial charge can be avoided.

[0060] In a further solution of the present invention, the conductive baffle 100 includes a plurality of connection posts 140 , which are spaced apart in the circumferential direction. The connection posts 140 are provided with connection holes 140A, which are arranged parallel to the axis of the via hole 130A.

[0061] In this solution, by arranging a plurality of connection columns 140 at intervals in the axial direction, the connection between the motor housing 410 and the conductive baffle 100 can be strengthened, thereby preventing the conductive baffle 100 from loosening due to vibration of the driving motor.

[0062] In a further embodiment of the present invention, the ring body 310 is provided with a plurality of press-fitting grooves 310A spaced apart in the circumferential direction.

[0063] In this solution, by providing press-fitting grooves 310A at intervals in the axial direction of the ring body 310 , the conductive ring 300 can be press-fitted into the baffle 100 through the press-fitting grooves 310A, thereby stabilizing the connection between the conductive ring 300 and the conductive baffle 100 .

[0064] A second aspect of the utility model provides a vehicle, comprising the drive assembly provided by the first aspect of the utility model.

[0065] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A drive assembly, characterized in that: It comprises a driving motor, a conductive ring (300) and a conductive baffle (100); The driving motor comprises a motor housing (410) and a motor shaft, and the conductive baffle (100) is connected to the motor housing (410); The conductive ring (300) is disposed on the conductive baffle (100) and is in contact with the motor shaft to conduct axial charges on the motor shaft to the motor housing (410).

2. The drive assembly according to claim 1, characterized in that: The motor housing (410) is formed with a bearing cavity (410A); The drive assembly further comprises a bearing (200), wherein the bearing (200) is disposed in the bearing cavity (410A) and is clamped between the conductive ring (300) and the motor housing (410) in the axial direction.

3. The drive assembly according to claim 2, characterized in that: The conductive ring (300) comprises a ring body (310) and a contact portion (320), wherein the ring body (310) is connected to the conductive baffle (100), and the contact portion (320) is radially extended on the inner peripheral wall of the ring body (310), and the contact portion (320) is in contact with the motor shaft.

4. The drive assembly according to claim 3, characterized in that: A plurality of contact portions (320) are arranged at intervals in the circumferential direction of the ring body portion (310), and the plurality of contact portions (320) are brushes.

5. The drive assembly according to claim 2, characterized in that: The conductive baffle (100) forms a conductive cavity (100A), and the conductive ring (300) is arranged in the conductive cavity (100A).

6. The drive assembly according to claim 5, characterized in that: The conductive baffle (100) is provided with a through hole (130A) for the motor shaft to pass through, the through hole (130A) is connected to the conductive cavity (100A), and the conductive ring (300) is coaxially arranged with the through hole (130A).

7. The drive assembly according to claim 6, characterized in that: The conductive baffle (100) comprises a connecting column (140) and a connecting portion (110), an extending portion (120) and a limiting portion (130) which are sequentially arranged in the axial direction, wherein the connecting column (140) is arranged on the connecting portion (110); The extending portion (120) and the limiting portion (130) form a conductive cavity (100A), the via hole (130A) is provided on the limiting portion (130), and the connecting portion (110) is connected to the motor housing (410).

8. The drive assembly according to claim 7, characterized in that: The conductive ring (300) is located between the limiting portion (130) and the bearing (200) in the axial direction, and the bearing (200) abuts against the connecting portion (110) and the conductive ring (300) in the axial direction.

9. The drive assembly according to claim 3, characterized in that: The ring body (310) is provided with a plurality of press-fitting grooves (310A) spaced apart in the circumferential direction.

10. A vehicle, characterized in that: Comprising the drive assembly according to any one of claims 1-9.

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