CN117445648A - Four-gear electric drive axle assembly and vehicle - Google Patents

Four-gear electric drive axle assembly and vehicle Download PDF

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Publication number
CN117445648A
CN117445648A CN202311442011.0A CN202311442011A CN117445648A CN 117445648 A CN117445648 A CN 117445648A CN 202311442011 A CN202311442011 A CN 202311442011A CN 117445648 A CN117445648 A CN 117445648A
Authority
CN
China
Prior art keywords
gear
tooth
drive axle
axle assembly
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311442011.0A
Other languages
Chinese (zh)
Inventor
徐明宇
姜雷
许可
王震
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FAW Jiefang Automotive Co Ltd
Original Assignee
FAW Jiefang Automotive Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FAW Jiefang Automotive Co Ltd filed Critical FAW Jiefang Automotive Co Ltd
Priority to CN202311442011.0A priority Critical patent/CN117445648A/en
Publication of CN117445648A publication Critical patent/CN117445648A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The invention relates to the technical field of automobile power, in particular to a four-gear electric drive axle assembly and a vehicle. The four-gear electric drive axle assembly comprises a motor, a first shaft group, a second shaft group, a third shaft group and a differential mechanism, and because the first gear shifting mechanism can be selectively connected with the planet carrier or the sun gear, the first gear shifting mechanism is in two gear states, the second gear shifting mechanism can be selectively in transmission connection with any one of the two driving gears, and the second gear shifting mechanism can be in two gear states.

Description

Four-gear electric drive axle assembly and vehicle
Technical Field
The invention relates to the technical field of automobile power, in particular to a four-gear electric drive axle assembly and a vehicle.
Background
At present, the electric drive axle is mostly in a single gear or two-gear structure, the complexity of a gearbox can be reduced by the single gear electric drive axle, only one reduction mechanism is needed to be configured, but the motor is required to provide enough torque and high rotation speed so as to meet the requirements of climbing property and high vehicle speed of a vehicle, the motor is often large in size, the motor and electric control cost are high, and because no gear is used for adjusting, the duty ratio of the motor in a high-efficiency interval is not large, and the overall efficiency of the motor is not high. The two-gear electric drive axle can improve the problem brought by the one-gear electric drive axle to a great extent, the low-speed gear is provided with a large transmission speed ratio to provide enough power for the vehicle, the high-speed gear is provided with a small transmission speed ratio to provide enough speed for the vehicle, the requirement on the motor can be reduced, the motor size is reduced, and the motor and electric control cost is reduced.
There is provided in the prior art a four-speed electrically driven bridge drive system comprising: the transmission comprises a first input unit, an intermediate shaft, a first transmission unit and a differential. The intermediate shaft is fixedly connected with a first gear shifter and a second gear shifter and is sleeved with a first gear shifting driven gear, a second gear shifting driven gear and a third gear shifting driving gear in a relatively rotatable manner; the first transmission unit comprises a second parallel shaft, a third gear shifting driven gear and a fourth gear shifting driving gear which are fixedly connected with the second parallel shaft; the differential is provided with a first power output half shaft and a second power output half shaft and a fourth shift driven gear is sleeved on the outer periphery of the housing of the differential, the fourth shift driving gear is used for transmitting power to the fourth shift driven gear, and the second shifter is selectively combined to the third shift driving gear or the fourth shift driven gear for transmitting power from the intermediate shaft to the third shift driving gear or the fourth shift driven gear.
However, the above system has the following drawbacks: the system adopts a parallel shaft type gear structure and comprises four gear trains to realize four speed ratios and further realize the division of four gears, but the four gear trains occupy larger space and have higher requirement on space arrangement of the gear trains.
Therefore, a four-gear electric drive axle assembly is needed to solve the above-mentioned technical problems.
Disclosure of Invention
The invention aims to provide a four-gear electric drive axle assembly and a vehicle, which can reduce the occupied space of a gear train on the premise of realizing four-gear division.
To achieve the purpose, the invention adopts the following technical scheme:
four shelves electricity drive bridge assembly includes:
a motor;
the first shaft group is connected with the output shaft of the motor and comprises a first output shaft and two driving gears, and the driving gears are fixedly arranged on the first output shaft;
the planetary gear train speed reducing structure comprises a sun gear, a planet carrier and a gear ring, wherein the sun gear is in transmission connection with the planet gear, the planet gear is in rotation connection with the planet carrier, the gear ring is in transmission connection with the planet gear, the first gear shifting mechanism at least comprises two gear states, in a first gear state, the first gear shifting mechanism is fixedly connected with the sun gear, and in a second gear state, the first gear shifting mechanism is connected with the planet carrier;
the differential mechanism is provided with a first power output half shaft and a second power output half shaft, and is fixedly connected with the planet carrier;
the third shaft group is in transmission connection with the first shaft group and the second shaft group respectively, the third shaft group comprises a second gear shifting mechanism, and the second gear shifting mechanism is selectively in transmission connection with any one of the two driving gears and used for enabling the second gear shifting mechanism to comprise two gear states.
As a preferable technical scheme of the four-gear electric drive axle assembly, external teeth are arranged on the periphery of the gear ring, and the gear ring is in transmission connection with the third shaft group.
As a preferred technical scheme of the four-gear electric drive axle assembly, the third shaft group further comprises a second output shaft and a first driven gear, the second output shaft is sequentially and fixedly connected with the first driven gear and the second gear shifting mechanism, the second gear shifting mechanism can be selectively combined to any one of the two driving gears to be used for transmitting power of the first output shaft to the second output shaft, and the first driven gear is in transmission connection with the gear ring.
As a preferable technical scheme of the four-gear electric drive axle assembly, the first gear shifting mechanism comprises fixed combining teeth, middle combining teeth, sun gear combining teeth and planet carrier combining teeth, wherein the fixed combining teeth are in transmission connection with the middle combining teeth, the middle combining teeth are selectively meshed with the sun gear combining teeth or the planet carrier combining teeth, the sun gear combining teeth are fixedly connected with the sun gear, and the planet carrier combining teeth are fixedly connected with the planet carrier.
As a preferable technical scheme of the four-gear electric drive axle assembly, the middle bonding tooth is provided with a first inner bonding tooth, a second inner bonding tooth and an outer bonding tooth, the first inner bonding tooth can be meshed with the sun gear bonding tooth, the second inner bonding tooth can be meshed with the planet carrier bonding tooth, and the outer bonding tooth is meshed with the fixed bonding tooth.
As a preferred technical scheme of the four-gear electric drive axle assembly, the second gear shifting mechanism comprises a second driven gear, a third driven gear, a gear hub and a gear shifting element, wherein the second driven gear and the third driven gear can be slidably arranged on the second output shaft, the gear hub is fixedly arranged on the second output shaft, the gear shifting element is respectively arranged on the third driven gear and the second driven gear, and the gear hub is selectively in transmission connection with the gear shifting element arranged on the third driven gear or the second driven gear.
As a preferable technical scheme of the four-gear electric drive axle assembly, the second driven gear, the third driven gear and the first driven gear are all cylindrical gears.
As a preferable technical scheme of the four-gear electric drive axle assembly, the first gear shifting mechanism and the differential mechanism are respectively arranged on two sides of the planetary gear speed reduction structure.
As a preferable technical scheme of the four-gear electric drive axle assembly, the number of the motors, the number of the first shaft group and the number of the third shaft group are two, and each motor is in transmission connection with the second shaft group through the first shaft group and the third shaft group.
As a preferable technical scheme of the four-gear electric drive axle assembly, the first half axle and the second half axle are also connected with a wheel-side speed reducer.
The invention also provides a vehicle, which comprises a left wheel, a right wheel and a drive axle assembly in transmission connection between the left wheel and the right wheel, wherein the drive axle assembly is the four-gear electric drive axle assembly according to any scheme.
The invention has the beneficial effects that:
the four-gear electric drive axle assembly comprises a motor, a first shaft group, a second shaft group, a third shaft group and a differential mechanism, wherein the motor provides power for the first shaft group, the third shaft group is arranged between the first shaft group and the second shaft group so as to transmit the power of the first shaft group to the second shaft group, and the differential mechanism can enable the first power output half axle and the second power output half axle to work at different speeds. Because the first gearshift can be selectively connected with the planet carrier or the sun gear, so that the first gearshift has two gear states, and the second gearshift can be selectively connected with any one of the two driving gears in a transmission way, so that the second gearshift can be in the two gear states, and therefore, the first gearshift and the second gearshift are mutually matched, the four-gear electric drive axle assembly can have four gears, and compared with a parallel shaft gear train or a planetary gear train for realizing four gears, the four-gear electric drive axle assembly provided by the application has the advantages of small occupation of longitudinal space, high transmission efficiency and more compact structure.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic structural diagram of a four-gear electric drive axle assembly according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first shaft set and a third shaft set according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a connection between a second shaft set and a differential according to an embodiment of the present invention.
In the figure:
1. a motor; 2. a first shaft group; 21. a first drive gear; 22. a first output shaft; 23. a second drive gear; 3. a second shaft group; 31. a planetary gear train speed reducing structure; 311. a sun gear; 312. a planet wheel; 313. a planet carrier; 314. a gear ring; 32. a first shift mechanism; 321. fixing the combination teeth; 322. intermediate coupling teeth; 3221. a first inner bond tooth; 3222. a second inner bond tooth; 3223. an outer coupling tooth; 323. sun gear engaging teeth; 324. planet carrier engaging teeth; 4. a third shaft group; 41. a second shift mechanism; 411. a second driven gear; 412. a third driven gear; 413. a gear hub; 414. a first shift coupling tooth; 415. a second shift coupling tooth; 42. a second output shaft; 43. a first driven gear; 5. a differential; 6. a first power take-off half shaft; 7. and a second power take-off half shaft.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The embodiment of the invention provides a four-gear electric drive bridge assembly which can reduce the space occupied by a gear train on the premise of ensuring the speed of four gears.
As shown in fig. 1-3, the four-gear electric drive axle assembly comprises a motor 1, a first shaft group 2, a second shaft group 3, a third shaft group 4 and a differential mechanism 5, wherein the motor 1 provides power for the first shaft group 2, the third shaft group 4 is arranged between the first shaft group 2 and the second shaft group 3 to transmit the power of the first shaft group 2 to the second shaft group 3, and the differential mechanism 5 can enable the first power output half shaft 6 and the second power output half shaft 7 to work at different speeds simultaneously.
Specifically, the first shaft set 2 is connected with an output shaft of the motor 1, the first shaft set 2 includes a first output shaft 22 and two driving gears, and the driving gears are fixedly arranged on the first output shaft 22; the second shaft group 3 comprises a planetary gear train speed reducing structure 31 and a first gear shifting mechanism 32, the planetary gear train speed reducing structure 31 comprises a sun gear 311, a planet gear 312, a planet carrier 313 and a gear ring 314, the sun gear 311 is in transmission connection with the planet gear 312, the planet gear 312 is in rotation connection with the planet carrier 313, the gear ring 314 is in transmission connection with the planet gear 312 through a bearing, the first gear shifting mechanism 32 at least comprises two gear states, in the first gear state, the first gear shifting mechanism 32 is fixedly connected with the sun gear 311, and in the second gear state, the first gear shifting mechanism 32 is connected with the planet carrier 313; the differential mechanism 5 is provided with a first power output half shaft 6 and a second power output half shaft 7, and the differential mechanism 5 is fixedly connected with the planet carrier 313; the third shaft group 4 is in driving connection with the first shaft group 2 and the second shaft group 3, respectively, the third shaft group 4 comprises a second gear shifting mechanism 41, the second gear shifting mechanism 41 can be selectively in driving connection with any one of the two driving gears for making the second gear shifting mechanism 41 comprise two gear states. The diameters of the two driving gears are different.
Because the first gearshift 32 can be selectively connected with the planet carrier 313 or the sun gear 311, so that the first gearshift 32 has two gear states, and the second gearshift 41 can be selectively connected with any one of the two driving gears in a transmission manner, so that the second gearshift can be in the two gear states, and thus, the first gearshift 32 and the second gearshift 41 are mutually matched, the four-gear electric drive axle assembly can have four gears, and compared with a parallel axle gear train or a planetary gear train for realizing four gears, the four-gear electric drive axle assembly provided by the application has the advantages of less occupation of longitudinal space, high transmission efficiency and more compact structure.
As shown in connection with fig. 1 and 3, in some embodiments, the inner circumference of the ring gear 314 is provided with internal teeth for driving connection with the planet wheels 312, the outer circumference of the ring gear 314 is provided with external teeth, and the ring gear 314 is in driving connection with the third shaft set 4. In this way, the ring gear 314 is in driving connection with the third shaft group 4 and the planet wheels 312, respectively, so that the power of the third shaft group 4 can be transmitted to the planet wheels 312.
Specifically, the first gear shifting mechanism 32 includes a fixed engaging tooth 321, an intermediate engaging tooth 322, a sun gear engaging tooth 323 and a carrier engaging tooth 324, the fixed engaging tooth 321 is in driving connection with the intermediate engaging tooth 322, and the intermediate engaging tooth 322 is selectively engaged with the sun gear engaging tooth 323 or the carrier engaging tooth 324, the sun gear engaging tooth 323 is fixedly connected with the sun gear 311, and the carrier engaging tooth 324 is fixedly connected with the carrier 313. The fixed combining teeth 321 can be fixedly arranged on the inner wall of the axle housing, so that the fixed combining teeth 321 provide fixation for the first gear shifting mechanism 32, the first gear shifting mechanism 32 can be prevented from moving in position compared with the axle housing, the middle combining teeth 322 can realize gear conversion, and then the planet carrier 313 or the sun gear 311 can be fixed according to different gears.
The intermediate coupling teeth 322 have first inner coupling teeth 3221, second inner coupling teeth 3222, and outer coupling teeth 3223, the first inner coupling teeth 3221 being capable of meshing with the sun gear coupling teeth 323, the second inner coupling teeth 3222 being capable of meshing with the carrier coupling teeth 324, and the outer coupling teeth 3223 being meshing with the fixed coupling teeth 321. The first and second inner bonding teeth 3221 and 3222 are respectively disposed on both sides of the outer bonding tooth 3223, which facilitates the overall arrangement of the first shift mechanism 32.
In the present embodiment, the first shift mechanism 32 and the differential 5 are disposed on both sides of the planetary gear reduction mechanism 31, respectively.
As shown in connection with fig. 1 and 2, in some embodiments, the third shaft set 4 further includes a second output shaft 42 and a first driven gear 43, the second output shaft 42 is fixedly connected with the first driven gear 43 and the second gear shifting mechanism 41 in turn, the second gear shifting mechanism 41 is selectively coupled to either one of the two driving gears for transmitting the power of the first output shaft 22 to the second output shaft 42, and the first driven gear 43 is in driving connection with the ring gear 314. The second gear shifting mechanism 41 is selectively in transmission connection with one of the two driving gears, then power is output to the gear ring 314 through the first driven gear 43, and the gear ring 314 transmits the power to the planet gears 312 and the sun gear 311, so that the purpose of gear shifting of the third shaft group 4 while the transmission connection is realized can be realized.
In some embodiments, the second gear shifting mechanism 41 includes a second driven gear 411, a third driven gear 412, a gear hub 413 and a gear shifting element, the second driven gear 411 and the third driven gear 412 are slidably disposed on the second output shaft 42, the gear hub 413 is fixedly disposed on the second output shaft 42, the gear shifting element is disposed on the first driven gear 43 and the third driven gear 412, respectively, and the gear shifting elements are disposed on the opposite side walls of the first driven gear 43 and the third driven gear 412, that is, the side wall of the first driven gear 43 facing the third driven gear 412 is provided with the gear shifting element, the side wall of the third driven gear 412 facing the first driven gear 43 is provided with the gear shifting element, and the gear hub 413 is selectively in driving connection with the gear shifting element disposed on the first driven gear 43 or the third driven gear 412.
Specifically, the shift element is a shift coupling tooth, and for convenience of description, the shift coupling tooth provided at the second driven gear 411 is a first shift coupling tooth 414, and the shift coupling tooth provided at the third driven gear 412 is a second shift coupling tooth 415. When the tooth hub 413 is engaged with the first shift engaging tooth 414, the tooth hub 413 is not engaged with the second shift engaging tooth 415, and when the tooth hub 413 is engaged with the second shift engaging tooth 415, the tooth hub 413 is not engaged with the first shift engaging tooth 414.
In the present embodiment, the driving gear, the second driven gear 411, the third driven gear 412, and the first driven gear 43 are all cylindrical gears. Thus, the transmission efficiency can be improved.
Specifically, the first gear shifting mechanism 32 includes two gear states, in the first gear state, a first inner engaging tooth 3221 on an intermediate engaging tooth 322 in the first gear shifting mechanism 32 is fixedly connected with the sun gear 311, an outer engaging tooth 3223 is fixedly connected with the fixed engaging tooth 321, and the first inner engaging tooth 3221 does not participate in meshing, so that the sun gear 311 is fixed and not rotated, and the planet carrier 313 is rotatable. In the second gear state, the first inner engaging tooth 3221 on the intermediate engaging tooth 322 in the first gear shifting mechanism 32 is fixedly connected with the sun gear 311, the second inner engaging tooth 3222 is connected with the planet carrier 313, and the outer engaging tooth 3223 is not engaged, so that the sun gear 311 is connected with the planet carrier 313, and the sun gear 311 and the planet carrier 313 rotate together.
The first inner bonding tooth 3221 is always connected with the sun gear 311, while the second inner bonding tooth 3222 and the fixed bonding tooth 321 selectively participate in the meshing, thereby realizing two transmission modes of fixing the sun gear 311, rotating the planet carrier 313 and simultaneously rotating the sun gear 311 and the planet carrier 313.
The embodiment of the invention also provides a vehicle which comprises a left wheel, a right wheel and a drive axle assembly in transmission connection between the left wheel and the right wheel, wherein the drive axle assembly is the four-gear electric drive axle assembly provided by the invention.
The vehicle according to the embodiment of the present invention has all the advantages and beneficial effects of the above embodiment, and will not be described herein.
Furthermore, the foregoing description of the preferred embodiments and the principles of the invention is provided herein. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims (10)

1. Four shelves electricity drive bridge assembly, its characterized in that includes:
an electric motor (1);
the first shaft group (2), the first shaft group (2) is connected with the output shaft of the motor (1), the first shaft group (2) comprises a first output shaft (22) and two driving gears, and the driving gears are fixedly arranged on the first output shaft (22);
the planetary gear train speed reducing mechanism (31) comprises a sun gear (311), a planet wheel (312), a planet carrier (313) and a gear ring (314), wherein the sun gear (311) is in transmission connection with the planet wheel (312), the planet wheel (312) is in rotation connection with the planet carrier (313), the gear ring (314) is in transmission connection with the planet wheel (312), the first gear shifting mechanism (32) at least comprises two gear states, in the first gear state, the first gear shifting mechanism (32) is fixedly connected with the sun gear (311), and in the second gear state, the first gear shifting mechanism (32) is connected with the planet carrier (313);
the differential mechanism (5) is provided with a first power output half shaft (6) and a second power output half shaft (7), and the differential mechanism (5) is fixedly connected with the planet carrier (313);
the third shaft group (4) is in transmission connection with the first shaft group (2) and the second shaft group (3) respectively, the third shaft group (4) comprises a second gear shifting mechanism (41), and the second gear shifting mechanism (41) is selectively in transmission connection with any one of the two driving gears and is used for enabling the second gear shifting mechanism (41) to comprise two gear states.
2. The four-gear electric drive axle assembly according to claim 1, characterized in that the outer circumference of the gear ring (314) is provided with external teeth, the gear ring (314) being in driving connection with the third shaft group (4).
3. The four-speed electric drive axle assembly according to claim 2, wherein the third shaft group (4) further comprises a second output shaft (42) and a first driven gear (43), the second output shaft (42) being in turn fixedly connected with the first driven gear (43) and the second gear shifting mechanism (41), the second gear shifting mechanism (41) being selectively coupleable to either of the two driving gears for transmitting power of the first output shaft (22) to the second output shaft (42), the first driven gear (43) being in driving connection with the ring gear (314).
4. A four-speed electric drive axle assembly according to claim 3, characterized in that the first gear shifting mechanism (32) comprises a fixed coupling tooth (321), an intermediate coupling tooth (322), a sun gear coupling tooth (323) and a planet carrier coupling tooth (324), the fixed coupling tooth (321) is in driving connection with the intermediate coupling tooth (322), the intermediate coupling tooth (322) is selectively meshed with the sun gear coupling tooth (323) or the planet carrier coupling tooth (324), the sun gear coupling tooth (323) is fixedly connected with the sun gear (311), and the planet carrier coupling tooth (324) is fixedly connected with the planet carrier (313).
5. The four-speed electric drive axle assembly according to claim 4, wherein the intermediate bonding tooth (322) has a first inner bonding tooth (3221), a second inner bonding tooth (3222) and an outer bonding tooth (3223), the first inner bonding tooth (3221) being engageable with the sun gear bonding tooth (323), the second inner bonding tooth (3222) being engageable with the planet carrier bonding tooth (324), the outer bonding tooth (3223) being engageable with the fixed bonding tooth (321).
6. The four-speed electric drive axle assembly according to claim 4, wherein the second gear shifting mechanism (41) comprises a second driven gear (411), a third driven gear (412), a gear hub (413) and a gear shifting element, the second driven gear (411) and the third driven gear (412) are slidably arranged on the second output shaft (42), the gear hub (413) is fixedly arranged on the second output shaft (42), the gear shifting element is respectively arranged on the third driven gear (412) and the second driven gear (411), and the gear hub (413) is selectively in transmission connection with the gear shifting element arranged on the third driven gear (412) or the second driven gear (411).
7. The four-speed electric drive axle assembly according to claim 6, wherein the second driven gear (411), the third driven gear (412) and the first driven gear (43) are all spur gears.
8. The four-gear electric drive axle assembly according to claim 1, wherein the first gear shifting mechanism (32) and the differential (5) are respectively arranged at two sides of the planetary gear train reduction structure (31).
9. The four-gear electric drive axle assembly according to claim 1, wherein the number of the motors (1), the first shaft group (2) and the third shaft group (4) is two, and each motor (1) is in transmission connection with the second shaft group (3) through the first shaft group (2) and the third shaft group (4).
10. A vehicle comprising a left wheel, a right wheel and a drive axle assembly drivingly connected between the left wheel and the right wheel, wherein the drive axle assembly is a four-speed electric drive axle assembly as defined in any one of claims 1-8.
CN202311442011.0A 2023-11-01 2023-11-01 Four-gear electric drive axle assembly and vehicle Pending CN117445648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311442011.0A CN117445648A (en) 2023-11-01 2023-11-01 Four-gear electric drive axle assembly and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311442011.0A CN117445648A (en) 2023-11-01 2023-11-01 Four-gear electric drive axle assembly and vehicle

Publications (1)

Publication Number Publication Date
CN117445648A true CN117445648A (en) 2024-01-26

Family

ID=89583235

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311442011.0A Pending CN117445648A (en) 2023-11-01 2023-11-01 Four-gear electric drive axle assembly and vehicle

Country Status (1)

Country Link
CN (1) CN117445648A (en)

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