CN117621819A - Driving device and vehicle - Google Patents
Driving device and vehicle Download PDFInfo
- Publication number
- CN117621819A CN117621819A CN202311761257.4A CN202311761257A CN117621819A CN 117621819 A CN117621819 A CN 117621819A CN 202311761257 A CN202311761257 A CN 202311761257A CN 117621819 A CN117621819 A CN 117621819A
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- differential
- output shaft
- input shaft
- shaft
- gear
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- 239000012530 fluid Substances 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000012217 deletion Methods 0.000 description 2
- 230000037430 deletion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
The present application relates to a driving device and a vehicle. The driving device includes: the motor is used for transmitting power through the input shaft; a countershaft assembly engaged with the input shaft; a differential engaged with the intermediate shaft assembly; an output shaft engaged with the differential; wherein the output shaft is in dynamic connection with the wheel, the output shaft being arranged coaxially with the input shaft and at least partially within the cavity of the input shaft.
Description
Technical Field
The present application relates to a driving device of a vehicle, and more particularly, to a driving device of an electric vehicle.
Background
Vehicles, in particular electric vehicles, increasingly require that the drive system provide as large a power output as possible in as small a space as possible, which requires that the drive system be arranged as compactly as possible. It is therefore desirable to provide a reasonable arrangement that achieves a superior balance between power output and space constraints.
The information provided in this section is for the purpose of generally presenting the context of the disclosure, and thus may comprise information not constituting prior art to the present application.
Disclosure of Invention
The object of the present application is to solve or at least alleviate the problems of the prior art.
An aspect of the present application provides a driving apparatus including:
the motor comprises an input shaft, a motor and a control unit, wherein the input shaft is internally provided with a cavity extending along the axial direction, and the motor transmits power through the input shaft;
a countershaft assembly engaged with the input shaft;
a differential engaged with the intermediate shaft assembly;
an output shaft engaged with the differential;
wherein the output shaft is in dynamic connection with a wheel, the output shaft being arranged coaxially with the input shaft and at least partially within the cavity of the input shaft.
In the drive device according to the present application, optionally, the cavity penetrates the input shaft, and the output shaft penetrates the cavity.
In the driving device according to the present application, optionally, one or more spiral inner grooves are provided on an inner wall of the input shaft, and one or more radially penetrating channels are provided on the input shaft.
In the drive device according to the present application, optionally, one or more spiral-shaped outer grooves corresponding to the inner groove are provided on the outer circumference of the output shaft, and the outer groove, the inner groove and the passage are in fluid communication with the motor.
In the driving device according to the present application, optionally, one end of the output shaft is in power connection with the differential mechanism, the other end of the output shaft is in power connection with the wheels, and the vicinity of the other end of the output shaft is supported on the housing member of the driving device via the output shaft ball bearing outer snap spring, the output shaft ball bearing inner snap spring and the output shaft ball bearing.
In the driving device according to the present application, optionally, the intermediate shaft assembly includes an intermediate shaft, a first intermediate shaft gear, and a second intermediate shaft gear, the first intermediate shaft gear is meshed with the input shaft gear of the input shaft, and the second intermediate shaft gear is meshed with the differential.
In the drive device proposed according to the present application, optionally, the differential includes a first differential gear that is meshed with the intermediate shaft, a second differential gear that is meshed with the output shaft gear of the output shaft, and a differential case.
In the drive device according to the present application, optionally, the drive device includes a housing member including, in order, an end cover, a first housing portion, a second housing portion, an intermediate plate, a third housing portion,
wherein,
the input shaft is rotatably supported to the first shell portion and the intermediate plate, respectively;
the intermediate shaft is respectively supported on the second shell part and the third shell part;
the differential is respectively supported on the middle plate and the third shell part;
wherein the input shaft and the differential are supported on opposite sides of the intermediate plate, respectively.
In the driving device according to the present application, optionally, both ends of the intermediate shaft are supported by the second casing portion and the third casing portion through tapered bearings, respectively, and both sides of the differential case are supported by the intermediate plate and the third casing portion through tapered bearings, respectively.
Another aspect of the present application provides a vehicle comprising a drive device as claimed in any one of the preceding claims.
Drawings
The disclosure of the present application will become more readily understood with reference to the accompanying drawings. As will be readily appreciated by those skilled in the art: these drawings are for illustrative purposes only and are not intended to limit the scope of the present application. Moreover, like numerals in the figures are used to designate like parts, wherein:
fig. 1 is a cross-sectional view of an embodiment of a drive device of the present application.
Reference numerals illustrate: end cap 101, first shell portion 102, second shell portion 103, intermediate plate 104, third shell portion 105, oil seal 106, input shaft 201, stator 202, rotor 203, input shaft gear 204, first input shaft bearing 205, second input shaft bearing 206, inner groove 207, channel 208, intermediate shaft 301, first intermediate shaft gear 302, second intermediate shaft gear 303, first intermediate shaft bearing 304, second intermediate shaft bearing 305, intermediate shaft lock bolt 306; differential 400, first differential gear 401, second differential gear 402, differential housing 403, first differential bearing 404, second differential bearing 405, output shaft 501, output shaft gear 502, outer groove 503, output shaft ball bearing inner snap ring 504, output shaft ball bearing outer snap ring 505, output shaft ball bearing 506.
Detailed Description
First, it should be noted that the components, features, advantages, and the like of the driving device and the vehicle according to the present application will be described below by way of example, but it should be understood that all descriptions are given for illustration only, and thus should not be construed as limiting the present application in any way. In this document, the terms "first," "second," and the like are used for descriptive purposes only and are not intended to indicate sequential or relative importance, the term "connected" or "coupled" or the like encompassing a particular component being directly connected to another component and/or indirectly connected to another component. Furthermore, unless explicitly specified and limited otherwise, the dimensions, directions or positional relationships indicated by the technical terms "length", "width", "height", "upper", "top", "bottom", etc. are based on the dimensions, orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and are not to be construed as limiting the present application.
Furthermore, to any single technical feature described or implicit in the embodiments mentioned herein, or any single technical feature shown or implicit in the drawings, the present application still allows any combination or deletion of any combination or deletion between these technical features (or their equivalents) to be continued without any technical obstacle, thereby obtaining still other embodiments of the present application that may not be directly mentioned herein. In addition, general matters which have been well known to those skilled in the art are not described in detail herein.
A cross-sectional view of one embodiment of a drive device according to the present application is shown in fig. 1, where the motor comprises a stator 202 and a rotor 203, the motor driving an input shaft 201 for power transmission to the drive device. The input shaft 201 may be connected to the motor rotor by a key and interference fit. Wherein the input shaft 201 has a hollow structure, in particular, the interior of the input shaft has a cavity extending along its axial direction, which cavity is preferably cylindrical and arranged coaxially with the input shaft. The drive also includes an intermediate shaft assembly that meshes with the input shaft and the differential, respectively, through which the input shaft 201 transmits power to the differential. The differential is meshed with an output shaft 501, which in turn transfers the power of the electric machine outwards via the output shaft 501, which can be power connected to the wheels of the vehicle. Wherein the output shaft 501 passes through the cavity of the input shaft 201 and is arranged coaxially with the output shaft 201, the axial dimension of the output shaft 501 is larger than the axial dimension of the input shaft 201, and in the assembled state, both ends of the output shaft protrude from both ends of the input shaft, respectively, i.e., the output shaft penetrates the cavity of the input shaft.
Preferably, one or more (e.g., three) helical inner grooves 207 are provided on the inner wall of the input shaft 201. Preferably, the input shaft 201 is provided with one or more (e.g., four) radially extending channels 208, and the channels 208 may be holes or other structures. In addition, one or more external grooves 503 may be provided on the outer circumference or wall of the output shaft 501, which external grooves 503 preferably correspond to the internal grooves 207 of the input shaft 201, e.g. in shape and size, and in position in the assembled state, to facilitate the formation of a fluid path between the internal grooves 207 and the external grooves 503. Preferably, the inner and outer grooves 207, 503 are in fluid communication with the motor in conjunction with the passage 208, which configuration facilitates the flow of lubrication oil to the motor side for lubrication and/or cooling of the motor components. As the input shaft rotates, lubrication oil (e.g., lubrication oil from the transmission side) passes through the passage 208 via the inner and outer grooves to the motor side.
One end (on the left in the figure) of the output shaft 501 is in power connection with the differential, the other end (on the right in the figure) of the output shaft 501 is in power connection with the wheels, and at the other end near the right, the output shaft 501 is supported on a shell member of the driving device through an output shaft ball bearing outer clamp spring 505, an output shaft ball bearing inner clamp spring 504 and an output shaft ball bearing 506, so that the output shaft 501 can be ensured to be installed in place and provide a peripheral Xiang Zhicheng force, and the phenomenon that the output shaft 501 is separated during disassembly and repair is prevented. Specifically, the output shaft is mounted on the end cover 101 by an output shaft ball bearing outer snap ring 505, an output shaft ball bearing inner snap ring 504 and an output shaft ball bearing 506 and is sealed by an oil seal 106.
In the drive arrangement shown in the figures, the countershaft assembly includes a countershaft 301, a first countershaft gear 302 and a second countershaft gear 303. Optionally, the first countershaft gear 302 is press fit with the countershaft 301 by a splined interference fit. The first countershaft gear 302 is meshed with the input shaft gear 204 of the input shaft 201 to enable a countershaft assembly to be in powered connection with the input shaft and the second countershaft gear 303 is meshed with the differential 400 to be in powered connection with the differential. The differential 400 includes a first differential gear 401, a second differential gear 402, and a differential housing 403. The first differential gear 401 is meshed with the intermediate shaft and the second differential gear 402 is meshed with an output shaft gear 502 of an output shaft 501. The two ends of the output shaft 501 can be connected with the output shaft gear 502 and the chassis half shaft through splines, so that power transmission is realized. Differential 400 may be engaged with two output shafts.
As can be further seen from fig. 1, the driving device comprises a housing member comprising, in order, an end cap 101, a first housing portion 102, a second housing portion 103, an intermediate plate 104 and a third housing portion 105. The housing member supports the various components of the drive arrangement or related components, wherein the input shaft 201 is rotatably supported to the first housing portion 102 and the intermediate plate 104, respectively, the intermediate shaft 301 is rotatably supported to the second housing portion 103 and the third housing portion 105, respectively, by bearings, the differential 400 is rotatably supported to the intermediate plate 104 and the third housing portion 105, respectively, by bearings, and the input shaft 201 and the differential are supported at the intermediate plate by bearings on opposite sides of the intermediate plate, respectively. Preferably, the intermediate shaft 301 is supported to the second 103 and third 105 housing portions by tapered bearings (e.g., tapered roller bearings), respectively, and may be axially locked by intermediate shaft locking bolts 306. Preferably, opposite sides of the differential housing 403 are supported to the intermediate plate 104 and the third housing portion 105, respectively, by tapered bearings (e.g., tapered roller bearings).
The drive arrangement in fig. 1 is typically usable in a vehicle, for example an electrically driven vehicle, more particularly as a pure electric vehicle.
The specific embodiments of the present application have been described above merely to provide a more clear description of the principles of the present application, in which individual components are explicitly shown or described to provide an even better understanding of the principles of the present application. Various modifications or variations of this application may be readily made by those skilled in the art without departing from the scope of this application. It is to be understood that such modifications and variations are intended to be included within the scope of the present application.
Claims (10)
1. A driving apparatus comprising:
the motor comprises an input shaft, a motor and a control unit, wherein the input shaft is internally provided with a cavity extending along the axial direction, and the motor transmits power through the input shaft;
a countershaft assembly engaged with the input shaft;
a differential engaged with the intermediate shaft assembly;
an output shaft engaged with the differential;
wherein the output shaft is in dynamic connection with a wheel, the output shaft being arranged coaxially with the input shaft and at least partially within the cavity of the input shaft.
2. The drive of claim 1, wherein the cavity extends through the input shaft and the output shaft extends through the cavity.
3. The drive of claim 1, wherein the input shaft has one or more helical inner grooves on an inner wall thereof and one or more radially extending channels.
4. A drive arrangement according to claim 3, wherein the output shaft is provided on its outer periphery with one or more helical outer grooves corresponding to the inner grooves, the outer grooves, inner grooves and channels being in fluid communication with the motor.
5. The drive device according to claim 1, wherein one end of the output shaft is in power connection with the differential, the other end of the output shaft is in power connection with a wheel, and the vicinity of the other end of the output shaft is supported on a housing member of the drive device via an output shaft ball bearing outer snap spring, an output shaft ball bearing inner snap spring, and an output shaft ball bearing.
6. The drive of claim 1, wherein the countershaft assembly includes a countershaft, a first countershaft gear engaged with an input shaft gear of the input shaft, and a second countershaft gear engaged with the differential.
7. The drive of claim 1, wherein the differential includes a first differential gear, a second differential gear, and a differential housing, the first differential gear being in mesh with the intermediate shaft, the second differential gear being in mesh with an output shaft gear of the output shaft.
8. The drive device according to claim 6 or 7, wherein the drive device comprises a housing member comprising, in order, an end cap, a first housing portion, a second housing portion, an intermediate plate, a third housing portion,
wherein,
the input shaft is rotatably supported to the first shell portion and the intermediate plate, respectively;
the intermediate shaft is respectively supported on the second shell part and the third shell part;
the differential is respectively supported on the middle plate and the third shell part;
wherein the input shaft and the differential are supported on opposite sides of the intermediate plate, respectively.
9. The drive device according to claim 8, wherein both ends of the intermediate shaft are supported to the second and third housing portions via tapered bearings, respectively, and both sides of the differential case are supported to the intermediate plate and the third housing portion via tapered bearings, respectively.
10. A vehicle comprising a drive arrangement according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311761257.4A CN117621819A (en) | 2023-12-20 | 2023-12-20 | Driving device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311761257.4A CN117621819A (en) | 2023-12-20 | 2023-12-20 | Driving device and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117621819A true CN117621819A (en) | 2024-03-01 |
Family
ID=90032191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311761257.4A Pending CN117621819A (en) | 2023-12-20 | 2023-12-20 | Driving device and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117621819A (en) |
-
2023
- 2023-12-20 CN CN202311761257.4A patent/CN117621819A/en active Pending
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