Driving device and vehicle

Abstract

The utility model provides a driving device and a vehicle, relates to the technical field of vehicles, and aims to solve the problem of power loss caused by friction between a conductive brush and an output shaft when a motor in the driving device rotates at a high speed. The driving device comprises a motor shell, a driving motor arranged on the motor shell and a conductive assembly arranged on the motor shell and arranged on the output shaft in a sleeving mode. The conductive assembly comprises an elastic piece and a conductive part, one end of the conductive part is connected with one end of the elastic piece and spaced from the motor output shaft, and the other end of the elastic piece is connected with the motor shell. After the conductive part moves towards the output shaft due to inertia, the elastic part enables the conductive part to reset by means of elastic force generated by elastic deformation of the elastic part. The driving device is used for providing power for the vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a drive device and a vehicle. Background Technology

[0002] As the new energy passenger vehicle market enters a period of rapid growth, higher demands are being placed on the reliability of vehicle power systems. During the operation of a vehicle's drive motor, due to uneven air gaps between the stator and rotor, and misalignment between the shaft center and the magnetic field center, the motor output shaft inevitably rotates in a not-quite-symmetrical magnetic field. This generates an alternating voltage at both ends of the shaft. When the shaft voltage exceeds the insulation capacity of the bearing lubricating oil, spark current will be generated, causing damage such as bearing electro-corrosion.

[0003] In existing technology, a conductive substrate and an automatic conductor extension assembly are included. The conductive substrate is annular. Multiple automatic conductor extension assemblies are arranged in a ring array on the conductive substrate. Each automatic conductor extension assembly includes a conductor that extends beyond the inner diameter surface of the conductive substrate, extends towards the center of the conductive substrate, and contacts the motor shaft. When the contact end between the conductor and the motor shaft wears, the conductor can automatically extend to maintain continuous contact with the motor shaft. However, when the motor rotates at high speed, friction between the conductor and the output shaft leads to power loss and affects the electric drive efficiency. Utility Model Content

[0004] The purpose of this application is to provide a drive device and vehicle to solve the problem of power loss caused by friction between the conductive brush and the output shaft when the existing vehicle drive device rotates at high speed.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, embodiments of this application provide a driving device, including a motor housing, a drive motor, and a conductive component. The drive motor includes a motor body and an output shaft connected to each other, and is disposed on the motor housing. The conductive component is disposed on the motor housing and sleeved on the output shaft of the drive motor. The conductive component includes an elastic element and a conductive part. One end of the elastic element is connected to the motor housing, and the conductive part is connected to the other end of the elastic element, with a gap between it and the motor output shaft. When the conductive part moves towards the output shaft due to inertia, the elastic element uses its own elastic deformation to restore the conductive part to its original position.

[0007] According to the above-described technical means, the driving device provided in this application embodiment includes a drive motor mounted on a motor housing, which provides a mounting position for the drive motor. A conductive component is also mounted on the motor housing, providing a mounting position for the conductive component, which is sleeved on the output shaft of the drive motor. The conductive component includes an elastic element and a conductive part. One end of the elastic element is connected to the motor housing, and the other end is connected to the conductive part. A gap exists between the conductive part and the output shaft. When the vehicle equipped with the drive device is running stably, the conductive part does not contact the output shaft, preventing power loss due to friction and avoiding wear caused by long-term contact and friction with the output shaft. When the vehicle's motion changes, the conductive part oscillates repeatedly radially along the output shaft under the combined action of inertia and the elastic element, intermittently contacting the output shaft. This conducts the accumulated charge on the output shaft to the motor housing, balancing the potential of the motor's stator and rotor, and preventing shaft current from breaking down the bearing and causing bearing electrochemical corrosion.

[0008] In one possible implementation, the conductive component further includes a first conductive element, which is annular and sleeved on the motor output shaft, with a gap between it and the output shaft.

[0009] According to the above technical means, the first conductive element is sleeved on the output shaft. When the conductive component is displaced due to the combined action of inertia and elasticity, the first conductive element can limit the movement range of the conductive component.

[0010] In one possible implementation, the conductive component further includes a plurality of second conductive elements disposed on the inner wall of the first conductive element and arranged at intervals along the circumference of the first conductive element.

[0011] According to the above technical means, multiple second conductive elements are set and arranged circumferentially. The multiple second conductive elements are distributed in various directions on the inner wall of the first conductive element. When the vehicle's motion state changes, the conductive element will preferentially contact the second conductive element when it moves in any direction along the radial direction of the output shaft, thereby reducing the distance that the conductive element needs to move to contact the output shaft.

[0012] In one possible implementation, there are multiple elastic elements, which are spaced apart circumferentially along the first conductive element.

[0013] Based on the above technical means, multiple elastic elements are set and arranged circumferentially. When the first conductive element is displaced due to inertia, the multiple elastic elements enable the first conductive element to quickly and accurately reset, avoiding the shaking caused by the inaccurate reset of a single elastic element or the unstable fixing of the first conductive element.

[0014] In one possible implementation, the conductive component may include an annular retainer connected to the motor housing, with multiple elastic elements located inside the retainer and one side connected to the inner wall of the retainer.

[0015] According to the above technical means, multiple elastomers do not need to be installed separately on the motor housing; only fasteners need to be installed, reducing the installation steps.

[0016] In one possible implementation, a plurality of second conductive elements are uniformly arranged along the circumference of the first conductive element.

[0017] According to the above technical means, when the conductive component is displaced in various directions, the probability of the uniformly arranged second conductive component contacting the output shaft in each direction is the same.

[0018] In one possible implementation, a plurality of elastic elements are uniformly arranged along the circumference of the first conductive element.

[0019] According to the above technical means, the uniformly arranged elastic elements provide a uniform elastic force distribution around the first conductive element, avoiding weak fixing force and reset force in certain directions.

[0020] In one possible implementation, a second conductive element is disposed opposite to an elastic element along the radial direction of the output shaft.

[0021] According to the above technical means, the second conductive element and the elastic element are arranged opposite to each other. When the conductive element is reset by the force of the elastic element, the second conductive element can break contact with the output shaft more quickly, reducing the friction between the second conductive element and the output shaft.

[0022] In one possible implementation, the elastic element includes a spring.

[0023] Based on the above technical means, springs are used as elastic components. The elastic components need to take into account both electrical conductivity and elasticity. Existing mature technology components use springs, which have a simple and durable structure.

[0024] Secondly, embodiments of this application provide a vehicle including any of the drive devices described in the first aspect.

[0025] Since the vehicle provided in this application includes the drive device in the first aspect, it can solve the same technical problems as the drive device described above and achieve the same technical effects, so it will not be described again here. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a driving device provided in an embodiment of this application;

[0027] Figure 2 This is a side view of a driving device provided in an embodiment of this application.

[0028] Figure label:

[0029] 100—Drive device; 1—Drive motor; 11—Motor body; 12—Motor output shaft; 2—Conductive component; 211—Second conductive component; 212—First conductive component; 22—Elastic component; 23—Fixing component; 3—Motor housing. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0031] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0032] The drive motor is an important component of a car. During operation, due to uneven air gaps between the stator and rotor, and the misalignment between the shaft center and the magnetic field center, the motor output shaft inevitably rotates in a not-quite-symmetrical magnetic field. This generates an alternating voltage at both ends of the shaft. When the shaft voltage exceeds the insulation capacity of the bearing lubricating oil, spark current will be generated, causing damage such as bearing electro-corrosion.

[0033] This application provides a vehicle. The specific type of vehicle is not specifically limited in this application; for example, the vehicle provided in this application can be an electric vehicle, a hybrid electric vehicle, or a solar-powered vehicle. Furthermore, the vehicle provided in this application can also be of different forms. For example, the vehicle provided in this application can be a sedan, a sport utility vehicle (SUV), or a multi-purpose vehicle (MPV).

[0034] The vehicle may include a frame. The frame may form the overall shape of the vehicle's exterior and create a passenger seating space. The frame may include door structures through which users can enter and exit.

[0035] Furthermore, to enable vehicle propulsion, the vehicle may also include an electric drive system assembly. The electric drive system assembly may include an electric drive system. This electric drive system may include a drive motor and a reducer. The drive motor provides power, and the reducer can be connected to the drive motor. The reducer can regulate the speed, allowing the vehicle to operate at different speeds. Depending on the driving method, the electric drive system can be categorized into front-wheel drive, rear-wheel drive, and four-wheel drive configurations.

[0036] In addition, the vehicle may include a transmission system that can be connected to an electric drive system to transmit power generated by the engine to the wheels.

[0037] To supply power to electrical components such as the drive motor, the vehicle provided in this application embodiment also includes a battery system. The battery system may include a battery pack, which can be used to provide electrical energy. The battery pack can be connected to the vehicle's electric drive system and other electrical components. In this way, the electrical energy from the battery pack can be transferred to various components of the vehicle for power supply.

[0038] The vehicle provided in this application embodiment also includes a drive unit. For example... Figure 1 As shown, Figure 1 This application provides a schematic diagram of a drive device 100, which may include a drive motor 1, a conductive component 2, and a motor housing 3. The drive motor 1 comprises a motor body 11 and a motor output shaft 12 connected to each other, and is mounted on the motor housing 3. The conductive component 2 is fixed to the motor housing 3 and sleeved on the motor output shaft 12. The conductive component 2 includes an elastic element 22 and a conductive part 21. One end of the elastic element 22 is connected to the motor housing 3, and the conductive part 21 is connected to the other end of the elastic element 22, with a gap between it and the motor output shaft 12. When the conductive part 21 moves towards the output shaft 12 due to inertia, the elastic element 22 returns the conductive part 21 to its original position by the elastic force generated by its own elastic deformation.

[0039] Because there is a gap between the conductive component 21 and the output shaft 12, when the vehicle equipped with the drive unit is running stably, the conductive component 21 and the output shaft 12 do not contact each other, so there is no power loss due to friction. At the same time, it also avoids wear caused by long-term contact and friction between the conductive component 21 and the output shaft 12. When the vehicle equipped with the drive unit changes its motion state, the conductive component 21 oscillates repeatedly along the radial direction of the output shaft 12 under the combined action of inertia and elastic element 22. The conductive component 21 makes intermittent contact with the output shaft 12, conducting the charge accumulated on the output shaft 12 to the motor housing 3, so that the potential between the motor stator and rotor is balanced, and the shaft current is prevented from breaking down the bearing and causing bearing electro-corrosion.

[0040] In some embodiments, such as Figure 2As shown, the conductive component 21 may include a first conductive element 212, which is annular and sleeved on the output shaft 12 with a gap between it and the output shaft 12. When the conductive component 21 is displaced due to the combined action of inertia and elastic element 22, the inner wall of the first conductive element 212 will stop moving after contacting the output shaft 12 until the inertial force is less than the force of the elastic element 22 and it resets. The first conductive element 212 can limit the range of movement of the conductive component 21.

[0041] Of course, in other embodiments, the first conductive element 212 can be a spiral structure, coiled around the output shaft 12. In this way, the first conductive element 212 can still limit the movement range of the conductive component 21, and also increase the contact range between the first conductive element 212 and the output shaft 12.

[0042] In some embodiments, the conductive component 21 may further include a plurality of second conductive components 211, which are disposed on the inner wall of the first conductive component 212 and arranged at circumferential intervals along the first conductive component 212. When the vehicle's motion state changes, the conductive component 21 preferentially contacts the second conductive component 211 when it moves in any radial direction along the output shaft 12, reducing the distance that the conductive component 21 needs to move to contact the output shaft 12, without affecting the range of movement of the conductive component 21 restricted by the first conductive component 212.

[0043] Of course, in some other embodiments, the second conductive element 211 can be a single entity. When the second conductive element 211 is a single entity, its shape and size surround the inner wall of the first conductive element 212, so that such a second conductive element 211 can also ensure contact between the second conductive element 211 and the output shaft 12 in any direction.

[0044] In some embodiments, the conductive component 2 may include a plurality of elastic elements 22, which are spaced apart circumferentially along the first conductive element 212. After the first conductive element 212 is displaced due to inertia, the multiple elastic elements 22 work together to make the first conductive element 212 quickly and accurately reset, avoiding problems such as inaccurate reset or unreliable fixation of a single elastic element 22 causing the first conductive element 212 to shake during vehicle operation.

[0045] Of course, in some other embodiments, the elastic element 22 can be a single element. When the elastic element 22 is a single element, its shape and size surround the outer wall of the first conductive element 212. Such an elastic element 22 can also ensure that the first conductive element 212 is securely fixed and accurately reset.

[0046] In some embodiments, the conductive component 2 may further include a fixing member 23 connected to the motor housing 3, and multiple elastic members 22 located inside the fixing member 23, with one side connected to the inner wall of the fixing member 23. Since the conductive component 2 as a whole includes multiple elastic members 22, installing it on the motor housing 3 requires multiple installations. Adding a fixing member 23 simplifies the installation process by requiring only one fixing member 23 to be installed.

[0047] Of course, in some other embodiments, the conductive component 2 may not include the fixing member 23, and multiple elastic members 22 may be connected at one end to the conductive component 21 and at the other end to the motor housing 3. In this way, the multiple elastic members 22 can be fixed by multiple installations.

[0048] In some embodiments, a plurality of second conductive elements 211 are uniformly arranged along the circumference of the first conductive element 212. To ensure that the second conductive elements 211 can contact the output shaft 12 as much as possible when the first conductive element 212 is displaced in any direction, the uniformly arranged second conductive elements 211 make the contact probability equal in all directions. Of course, the plurality of second conductive elements 211 can also be arranged non-uniformly at intervals along the circumference of the first conductive element 212.

[0049] In some embodiments, a plurality of elastic elements 22 are uniformly arranged around the circumference of the first conductive element 212. The first conductive element 212 is connected to the fixing element 23 by the plurality of elastic elements 22, and the reset of the first conductive element 212 after displacement also relies on the force of the elastic elements 22. The uniformly arranged elastic elements 22 provide a uniform elastic force distribution around the first conductive element 212, avoiding weak fixing force and reset force in certain directions. Of course, the plurality of elastic elements 22 can also be arranged non-uniformly around the circumference of the first conductive element 212.

[0050] In some embodiments, an elastic element 22 and a second conductive element 211 are disposed opposite each other along the radial direction of the output shaft 12. When the conductive element 21 is reset by the force of the elastic element 22, the second conductive element 211, which is disposed opposite to the elastic element 22, is in the direction of the elastic force and can break contact with the output shaft 12 more quickly, reducing friction between the second conductive element 211 and the output shaft 12. Of course, the elastic element 22 and the second conductive element 211 may not be disposed opposite each other along the radial direction of the output shaft 12.

[0051] In some embodiments, the plurality of elastic elements 22 may be springs. Springs, as commonly used elastic elements, have advantages such as low cost, easy procurement, conductivity, and high durability, and meet the various requirements of elastic elements 22, and can be used as a material for selection.

[0052] Of course, in other embodiments, the multiple elastic elements 22 can also be sheet springs. In this way, the sheet springs also have elasticity and conductivity, which can reset the conductive component 21 and conduct shaft current.

[0053] Secondly, embodiments of this application provide a vehicle including any of the drive devices described in the first aspect. Since the vehicle provided in this application includes the drive device described in the first aspect, it can solve the same technical problems as the aforementioned drive devices and achieve the same technical effects, further details are omitted here.

[0054] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A driving device, characterized in that, include: Motor housing (3); A drive motor (1) is mounted on the motor housing (3) and includes a motor body (11) and an output shaft (12) connected to each other. as well as, A conductive component (2) is disposed on the motor housing (3) and sleeved on the output shaft (12); The conductive component (2) includes: The elastic element (22) is connected at one end to the motor housing (3); and, A conductive component (21) is connected to the other end of the elastic component (22), and there is a gap between the conductive component (21) and the output shaft (12); When the conductive component (21) moves toward the output shaft (12) due to inertia, the elastic component (22) resets the conductive component (21) by the elastic force generated by its own elastic deformation.

2. The driving device according to claim 1, characterized in that, The conductive component (21) includes: The first conductive element (212) is annular and is sleeved on the output shaft (12), with a gap between it and the output shaft (12); The other end of the elastic element (22) is connected to the outer wall of the first conductive element (212).

3. The driving device according to claim 2, characterized in that, The conductive component (21) further includes: A plurality of second conductive elements (211) are disposed on the inner wall of the first conductive element (212) and spaced apart along the circumference of the first conductive element (212).

4. The driving device according to claim 3, characterized in that, The number of elastic elements (22) is multiple; the multiple elastic elements (22) are arranged at circumferential intervals along the first conductive element (212).

5. The driving device according to claim 4, characterized in that, The conductive component (2) further includes: The fastener (23) is annular; the fastener (23) is connected to the motor housing (3); Among them, a plurality of elastic elements (22) are located inside the fixing element (23), and one end is connected to the inner wall of the fixing element (23).

6. The driving device according to claim 4, characterized in that, Multiple second conductive elements (211) are uniformly arranged along the circumference of the first conductive element (212).

7. The driving device according to claim 6, characterized in that, The plurality of elastic elements (22) are uniformly arranged along the circumference of the first conductive element (212).

8. The driving device according to claim 7, characterized in that, Along the radial direction of the output shaft (12), one of the second conductive elements (211) is disposed opposite to one of the elastic elements (22).

9. The driving device according to any one of claims 1-8, characterized in that, The elastic element (22) includes a spring.

10. A vehicle, characterized in that, The drive device (100) includes any one of claims 1-9.

Images