CN216942675U - Electric drive system, electric automobile's driving system and electric automobile - Google Patents
Electric drive system, electric automobile's driving system and electric automobile Download PDFInfo
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- CN216942675U CN216942675U CN202220441416.7U CN202220441416U CN216942675U CN 216942675 U CN216942675 U CN 216942675U CN 202220441416 U CN202220441416 U CN 202220441416U CN 216942675 U CN216942675 U CN 216942675U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/72—Electric energy management in electromobility
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Abstract
The utility model discloses an electric drive system, a power system of an electric automobile and the electric automobile, wherein the electric drive system comprises a box body, a drive motor, a first planet row, a second planet row, a differential mechanism and a gear shifting mechanism, wherein the first planet row comprises a first sun gear, a first planet gear and a first gear ring; the second planet row comprises a second sun gear, a second planet gear structure and a second gear ring; the gear shifting mechanism comprises a gear movable switching mechanism and a clutch. According to the electric drive system provided by the utility model, the gear movable switching mechanism is matched with the clutch, so that the electric drive system can output two rotating speeds, namely the electric drive system has two gears to better adapt to complex road conditions, the electric drive system adopts the first planet row and the second planet row to realize power transmission, the space occupied by the planet rows is compact, the structures of the gear movable switching mechanism and the clutch are simpler and smaller, and therefore, the space required by the compact arrangement of the whole electric drive system is small, and the electric drive system has better adaptability.
Description
Technical Field
The utility model relates to the technical field of pure electric vehicle electric drive, in particular to an electric drive system, a power system of an electric vehicle and the electric vehicle.
Background
The electric automobile has the advantages of cleanness, no pollution, high energy efficiency, low noise and the like, has better industrialization potential, and adopts a two-gear speed changing scheme for an electric driving system of the electric automobile in order to adapt to complex road conditions. At present, in a two-gear speed-changing scheme of an electric drive system, a gear-shifting mechanism for realizing two-gear switching is complex in structure, so that the overall structure of the electric drive system is large, and the electric drive system is large in required arrangement space and poor in adaptation.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide an electric drive system, a power system of an electric automobile and the electric automobile, and aims to solve the problems of large space required by arrangement of the electric drive system and poor adaptability.
To achieve the above object, the present invention provides an electric drive system including:
a box body;
the driving motor is arranged in the box body;
the first planet row comprises a first sun gear, a first planet wheel and a first gear ring, the first sun gear is fixedly connected with an output shaft of the driving motor, and the first planet wheel is provided with a first planet carrier;
the second planet row comprises a second sun gear, a second planet gear structure and a second gear ring, the second sun gear is fixedly connected with the first planet carrier, the second gear ring is fixedly arranged on the box body, and the second planet gear structure comprises a second planet carrier;
the differential comprises a differential shell, and the differential shell is fixedly connected with the second planet carrier; and the number of the first and second groups,
the gear shifting mechanism comprises a gear movable switching mechanism and a clutch, the gear movable switching mechanism comprises a movable inner gear ring, the movable inner gear ring is in a fixed state and a movable state, the movable inner gear ring is fixedly connected with the first gear ring, the clutch is provided with a fixed part and a movable part, the fixed part is fixedly connected with the first gear ring, the movable part is fixedly connected with the first planet carrier, and the fixed part and the movable part can be matched and separated with each other, so that the clutch has a combined state and a separated state;
when the movable inner gear ring is in a fixed state, the clutch is in a separated state, and when the movable inner gear ring is in a movable state, the clutch is in a combined state.
Optionally, the second planetary gear structure further includes a second planetary gear and a third planetary gear, the second planetary gear is connected in parallel with the third planetary gear, and is connected through the second planetary carrier, the second planetary gear is engaged with the second sun gear, and the third planetary gear is engaged with the second ring gear.
Optionally, the gear movement switching mechanism further comprises a housing, a fixed ring gear and a gear sleeve, the housing is fixedly connected with the box body, the fixed ring gear is fixedly mounted on the housing, the gear sleeve is mounted on the housing and movably arranged along an axis parallel to an output shaft of the driving motor to have a first position engaged with the fixed ring gear and the movable ring gear so that the movable ring gear is in a fixed state, and a second position engaged with the fixed ring gear and separated from the movable ring gear so that the movable ring gear is in a movable state;
when the movable inner gear ring is in a fixed state, the first gear ring and the box body are relatively fixed.
Optionally, the drive motor, the first planet row, the second planet row and the differential are arranged coaxially.
Optionally, the output shaft of the driving motor is coaxially arranged with the left and right half shafts of the differential.
Optionally, the differential further includes a left half-axle gear, a right half-axle gear, a planet carrier, and two planet wheels, the planet carrier is fixedly connected with the differential case, and the left half-axle gear and the right half-axle gear are respectively engaged with the two planet wheels;
and the shaft end of the left half axle gear sequentially penetrates through the second sun gear, the first sun gear and the output shaft of the driving motor.
Optionally, the differential case and the second planet row are integrally provided.
The utility model also provides a power system of an electric vehicle, which comprises an electric drive system, wherein the electric drive system comprises:
a box body;
the driving motor is arranged in the box body;
the first planet row comprises a first sun gear, a first planet wheel and a first gear ring, the first sun gear is fixedly connected with an output shaft of the driving motor, and the first planet wheel is provided with a first planet carrier;
the second planet row comprises a second sun gear, a second planet gear structure and a second ring gear, the second sun gear is fixedly connected with the first planet carrier, the second ring gear is fixedly arranged on the box body, and the second planet gear structure comprises a second planet carrier;
the differential comprises a differential shell, and the differential shell is fixedly connected with the second planet carrier; and the number of the first and second groups,
the gear shifting mechanism comprises a gear movable switching mechanism and a clutch, the gear movable switching mechanism comprises a movable inner gear ring, the movable inner gear ring is in a fixed state and a movable state, the movable inner gear ring is fixedly connected with the first gear ring, the clutch is provided with a fixed part and a movable part, the fixed part is fixedly connected with the first gear ring, the movable part is fixedly connected with the first planet carrier, and the fixed part and the movable part can be matched and separated with each other so that the clutch has a combined state and a separated state;
when the movable inner gear ring is in a fixed state, the clutch is in a separated state, and when the movable inner gear ring is in a movable state, the clutch is in a combined state.
In addition, the utility model also provides an electric automobile, which comprises a power system of the electric automobile, wherein the power system of the electric automobile comprises:
a box body;
the driving motor is arranged in the box body;
the first planet row comprises a first sun gear, a first planet wheel and a first gear ring, the first sun gear is fixedly connected with an output shaft of the driving motor, and the first planet wheel is provided with a first planet carrier;
the second planet row comprises a second sun gear, a second planet gear structure and a second gear ring, the second sun gear is fixedly connected with the first planet carrier, the second gear ring is fixedly arranged on the box body, and the second planet gear structure comprises a second planet carrier;
the differential comprises a differential shell, and the differential shell is fixedly connected with the second planet carrier; and the number of the first and second groups,
the gear shifting mechanism comprises a gear movable switching mechanism and a clutch, the gear movable switching mechanism comprises a movable inner gear ring, the movable inner gear ring is in a fixed state and a movable state, the movable inner gear ring is fixedly connected with the first gear ring, the clutch is provided with a fixed part and a movable part, the fixed part is fixedly connected with the first gear ring, the movable part is fixedly connected with the first planet carrier, and the fixed part and the movable part can be matched and separated with each other, so that the clutch has a combined state and a separated state;
when the movable inner gear ring is in a fixed state, the clutch is in a separated state, and when the movable inner gear ring is in a movable state, the clutch is in a combined state.
In the technical solution of the present invention, the electric drive system realizes speed switching through the gear movable switching mechanism and the clutch, the movable inner gear ring in the gear movable switching mechanism is fixedly connected to the first gear ring, the fixed part in the clutch is fixedly connected to the first carrier, the movable part is fixedly connected to the first gear ring, when the movable inner gear ring is in a fixed state and the fixed part and the movable part are separated, the first gear ring is fixed, the drive motor drives the first sun gear to rotate, the first planet gear is engaged with the first sun gear and the first gear ring to drive the first carrier to rotate, the second sun gear is fixedly connected to the first carrier, so as to transmit the output rotation speed of the drive motor to the second sun gear after being decelerated by the first planet row, the second planet wheel structure with the second sun gear with the meshing of second ring gear drives the second planet carrier rotates, because second ring gear fixed mounting in the box, consequently driving motor's output rotational speed process the second planet row slows down the back, by the second planet carrier transmits to differential mechanism, differential mechanism will rotate and transmit to left and right sides semi-axis, and left and right sides semi-axis drives left and right sides wheel and rotates with first rotational speed. When the movable inner gear ring is in a movable state and the fixed part and the movable part are matched with each other, the first planet carrier and the first gear ring rotate at the same speed and in the same direction, namely the rotation direction and the rotation speed of the first planet carrier and the first gear ring and the sun gear are the same, namely the first planet row directly outputs the rotation speed of the driving motor, the second sun gear is fixedly connected with the first planet carrier so as to transmit the output rotation speed of the driving motor to the second sun gear, the second planet gear structure is meshed with the second sun gear and the second gear ring to drive the second planet carrier to rotate, and the second gear ring is fixedly arranged in the box body, so that the output rotation speed of the driving motor is transmitted to the differential mechanism by the second planet carrier after being reduced by the second planet row, and the differential mechanism transmits the rotation to the left half shaft and the right half shaft, the left half shaft and the right half shaft drive the left wheel and the right wheel to rotate at a second rotating speed. Through the cooperation of gear activity switching mechanism with the clutch, so that electric drive system exports two kinds of rotational speeds, promptly electric drive system has two gears to can better adapt to complicated road conditions, electric drive system adopts first planet row with power transmission is realized to the second planet row, and the structure of planet row is compact, the space occupies for a short time, just gear activity switching mechanism with the structure of clutch is simpler, small, thereby makes whole electric drive system's structure compacter, arranges required space for a short time, has better adaptability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of an embodiment of an electric drive system provided by the present invention (with the movable ring gear in a fixed state and the clutch in a disengaged state);
fig. 2 is a schematic view of another state of the electric drive system provided by the utility model (when the movable ring gear is in the active state, the clutch is in the engaged state).
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B", including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The electric automobile has the advantages of cleanness, no pollution, high energy efficiency, low noise and the like, has better industrialization potential, and adopts a two-gear speed-changing scheme for an electric driving system of the electric automobile in order to adapt to complex road conditions. At present, in a two-gear speed-changing scheme of an electric drive system, a gear-shifting mechanism for realizing two-gear switching is complex in structure, so that the overall structure of the electric drive system is large, and the electric drive system is large in required arrangement space and poor in adaptation.
In view of this, the present invention provides an electric drive system, through the cooperation of the gear-activity switching mechanism and the clutch, the electric drive system can output two rotation speeds, that is, the electric drive system has two gears to better adapt to complex road conditions, the electric drive system adopts the first planetary row and the second planetary row to realize power transmission, the planetary row has a compact structure and a small space occupation, and the gear-activity switching mechanism and the clutch have a simple structure and a small volume, so that the whole electric drive system has a more compact structure, a small space required for arrangement, and better adaptability. Fig. 1 and 2 show an embodiment of an electric drive system according to the present invention.
As shown in fig. 1 and fig. 2, the present invention provides an electric drive system 100, which includes a case 1, a driving motor 2, a first planetary row 3, a second planetary row 4, a differential 5, and a gear shift mechanism 6, wherein the driving motor 2 is disposed in the case 1; the first planet row 3 comprises a first sun gear 31, a first planet gear 32 and a first gear ring 33, the first sun gear 31 is fixedly connected with an output shaft of the driving motor 2, and the first planet gear 32 is provided with a first planet carrier 34; the second planet row 4 comprises a second sun gear 41, a second planet gear structure 42 and a second ring gear 44, the second sun gear 41 is fixedly connected with the first planet carrier 34, the second ring gear 44 is fixedly arranged on the box 1, and the second planet gear structure 42 comprises a second planet carrier 43; the differential 5 comprises a differential case 51, and the differential case 51 is fixedly connected with the second planet carrier 43; the gear shift mechanism 6 includes a gear movement switching mechanism 61 and a clutch 62, the gear movement switching mechanism 61 includes a movable ring gear 611, the movable ring gear 611 has a fixed state and a movable state, the movable ring gear 611 is fixedly connected with the first ring gear 33, the clutch 62 has a fixed portion 621 and a movable portion 622, the fixed portion 621 is fixedly connected with the first ring gear 33, the movable portion 622 is fixedly connected with the first carrier 34, and the fixed portion 621 and the movable portion 622 can be engaged with and disengaged from each other, so that the clutch 62 has an engaged state and a disengaged state; wherein when the movable ring gear 611 is in a fixed state, the clutch 62 is in a disengaged state, and when the movable ring gear 611 is in an active state, the clutch 62 is in an engaged state.
In the technical solution of the present invention, the electric drive system 100 realizes speed switching through the gear movable switching mechanism 61 and the clutch 62, the movable ring gear 611 in the gear movable switching mechanism 61 is fixedly connected to the first ring gear 33, the fixed portion 621 in the clutch 62 is fixedly connected to the first carrier 34, the movable portion 622 is fixedly connected to the first ring gear 33, when the movable ring gear 611 is in a fixed state and the fixed portion 621 is separated from the movable portion 622, the first ring gear 33 is fixed, the drive motor 2 drives the first sun gear 31 to rotate, the first planet gear 32 is engaged with the first sun gear 31 and the first ring gear 33 to drive the first carrier 34 to rotate, and the second sun gear 41 is fixedly connected to the first carrier 34, so that the output rotation speed of the drive motor 2 is reduced by the first planet row 3 and then transmitted to the second planet gear The sun gear 41, the second planetary gear structure 42 and the second sun gear 41 and the second ring gear 44 are engaged to drive the second planet carrier 43 to rotate, and the second ring gear 44 is fixedly mounted on the box body 1, so that the output rotation speed of the driving motor 2 is reduced by the second planet row 4 and then transmitted to the differential 5 by the second planet carrier 43, the differential 5 transmits the rotation to the left and right half shafts, and the left and right half shafts drive the left and right wheels to rotate at the first rotation speed. When the movable ring gear 611 is in a movable state, and the fixed portion 621 and the movable portion 622 are engaged with each other, the first planet carrier 34 and the first ring gear 33 rotate in the same speed and direction, that is, the first planet carrier 34 and the first ring gear 33 rotate in the same direction and speed as the sun gear, that is, the first planet carrier 3 directly outputs the speed of the driving motor 2, the second sun gear 41 is fixedly connected to the first planet carrier 34, so as to transmit the output speed of the driving motor 2 to the second sun gear 41, the second planet gear structure 42 is engaged with the second sun gear 41 and the second ring gear 44, so as to drive the second planet carrier 43 to rotate, and since the second ring gear 44 is fixedly mounted to the case 1, the output speed of the driving motor 2 is reduced by the second planet carrier 4, and then transmitted to the differential 5 by the second planet carrier 43, the differential 5 transmits the rotation to the left and right axle shafts, which drive the left and right wheels to rotate at a second rotational speed. Through the cooperation of the gear activity switching mechanism 61 and the clutch 62, the electric drive system 100 can output two rotating speeds, that is, the electric drive system 100 has two gears to be capable of better adapting to complex road conditions, the electric drive system 100 adopts the first planetary row 3 and the second planetary row 4 to realize power transmission, the planetary rows have compact structure and small occupied space, and the gear activity switching mechanism 61 and the clutch 62 have simple structure and small volume, so that the whole electric drive system 100 has compact structure, small required space for arrangement and better adaptability.
The number of rows of planet wheels in the second planet row 4 is not limited, and the planet wheels can be single-row planet wheels or double-row planet wheels. In this embodiment, as shown in fig. 1 and fig. 2, the second planetary gear structure 42 further includes a second planetary gear structure 421 and a third planetary gear 422, the second planetary gear structure 421 is connected in parallel with the third planetary gear 422 and is connected through the second planetary carrier 43, the second planetary gear structure 421 is engaged with the second sun gear 41, and the third planetary gear 422 is engaged with the second ring gear 44. The rotation of the driving motor 2 is transmitted to the second sun gear 41 through the first planetary row 3, the second sun gear 41 is engaged with the second planetary gear 421 to transmit the rotation to the second planetary gear 421, the second planetary gear 421 is connected with the third planetary gear 422 through the second planetary carrier 43, so the third planetary gear 422 rotates synchronously with the second planetary gear 421, the third planetary gear 422 is engaged with the second ring gear 44, and the second ring gear 44 is fixed on the case 1, so the rotation is transmitted to the differential 5 through the second planetary carrier 43. By providing the third planetary gear 422, the electric drive system 100 can achieve a larger speed ratio and a higher transmission efficiency.
The movable ring gear in the gear-movable switching mechanism 61 has a fixed state and a movable state. In the present embodiment, as shown in fig. 1 and 2, gear-movement switching mechanism 61 further includes a housing 614, a fixed ring gear 612, and a gear sleeve 613, where housing 614 is fixedly connected to case 1, fixed ring gear 612 is fixedly mounted to housing 614, and gear sleeve 613 is mounted to housing 614 and movably disposed along an axis parallel to an output shaft of drive motor 2 to have a first position engaging with fixed ring gear 612 and movable ring gear 611 so that movable ring gear 611 is in a fixed state, and a second position engaging with fixed ring gear 612 and separated from movable ring gear 611 so that movable ring gear 611 is in a movable state; when the movable inner gear ring 611 is in a fixed state, the first gear ring 33 is fixed relative to the case 1. When gear sleeve 613 is moved to the first position where fixed ring gear 612 and movable ring gear 611 are engaged, fixed ring gear 612, movable ring gear 611 and gear sleeve 613 are fixed to housing 614, and since movable ring gear 611 is fixed to first ring gear 33 while first ring gear 33 is fixed, the rotation of drive motor 2 is transmitted to second sun gear 41 through first carrier 34. When gear sleeve 613 moves to the second position where it is engaged with fixed ring gear 612 and disengaged from movable ring gear 611, movable ring gear 611 and housing 614 move relatively, i.e. movable ring gear 611 rotates with first ring gear 33, and clutch 62 is engaged, first ring gear 33 and first carrier 34 rotate at the same speed, i.e. first planetary row 3 does not decelerate, and the rotation of driving motor 2 is directly transmitted to second planetary row 4 through first planetary row 3, so that differential 5 obtains a second rotation speed.
In the present embodiment, as shown in fig. 1 and 2, the drive motor 2, the first planetary row 3, the second planetary row 4, and the differential 5 are coaxially arranged. By coaxially arranging the driving motor 2, the first planetary row 3, the second planetary row 4 and the differential 5, the width dimension of the electric driving system 100 arranged on the axle is reduced, so that the transmission structure of the electric driving system 100 is more compact and the arrangement space is small.
Specifically, in the present embodiment, as shown in fig. 1 and 2, the output shaft of the drive motor 2 is disposed coaxially with the left and right axle shafts of the differential 5. By coaxially arranging the output shaft of the driving motor 2 and the left and right half shafts of the differential 5, so that the driving motor 2 and the differential 5 are coaxially arranged, compared with the parallel shaft arrangement of the driving motor 2 and the differential 5, the width dimension of the electric driving system 100 arranged on the axle is small, and the space required for arranging the whole electric driving system 100 is smaller.
The left half shaft and the right half shaft of the differential 5 are coaxially arranged with the output shaft of the driving motor 2. In the present embodiment, as shown in fig. 1 and fig. 2, the differential 5 further includes a left side gear 53, a right side gear 54, a planet carrier 52, and two planet wheels 55, the planet carrier 52 is fixedly connected to the differential case 51, and the left side gear 53 and the right side gear 54 are respectively engaged with the two planet wheels 55; the shaft end of the left side gear 53 is sequentially arranged to penetrate through the second sun gear 41, the first sun gear 31 and the output shaft of the driving motor 2. The second carrier 43 transmits the rotation of the driving motor 2 to the planet carrier 52 through the differential case 51, so as to rotate the two planet wheels 55 mounted on the planet carrier 52, thereby driving the left side gear 53 and the right side gear 54 to rotate, the rotation of the left side gear 53 and the right side gear 54 is transmitted to the wheels through the left half shaft 56 and the right half shaft 57 of the differential 5, respectively, the left side gear 53 and the right half shaft 54 are coaxially arranged, and the axle end of the left side gear 53, that is, the left half shaft 56 of the differential 5, sequentially penetrates through the second sun gear 41, the first sun gear 31 and the output shaft of the driving motor 2, so as to realize that the left half shaft and the right half shaft of the differential 5 are coaxially arranged with the output shaft of the driving motor 2.
Specifically, in the present embodiment, as shown in fig. 1 and 2, the differential case 51 and the second planetary row 4 are integrally provided. By integrally arranging the differential case 51 and the second planetary gear set 4, the assembling steps are simplified, the working efficiency is improved, and the structures of the second planetary gear set 4 and the differential 5 are more compact, and the installation space is saved.
The utility model also provides a power system of an electric automobile, which comprises an electric drive system 100, and the specific structure of the electric drive system 100 refers to the above embodiment, and is shown in fig. 1 and fig. 2. It can be understood that, because the power system of the electric vehicle according to the present invention adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is provided herein.
In addition, the utility model also provides an electric automobile which comprises a power system of the electric automobile, and the specific structure of the power system of the electric automobile refers to the embodiment. It can be understood that, since the electric vehicle according to the present invention adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is provided herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. An electric drive system, comprising:
a box body;
the driving motor is arranged in the box body;
the first planet row comprises a first sun gear, a first planet gear and a first gear ring, the first sun gear is fixedly connected with an output shaft of the driving motor, and the first planet gear is provided with a first planet carrier;
the second planet row comprises a second sun gear, a second planet gear structure and a second gear ring, the second sun gear is fixedly connected with the first planet carrier, the second gear ring is fixedly arranged on the box body, and the second planet gear structure comprises a second planet carrier;
the differential comprises a differential shell, and the differential shell is fixedly connected with the second planet carrier; and the number of the first and second groups,
the gear shifting mechanism comprises a gear movable switching mechanism and a clutch, the gear movable switching mechanism comprises a movable inner gear ring, the movable inner gear ring is in a fixed state and a movable state, the movable inner gear ring is fixedly connected with the first gear ring, the clutch is provided with a fixed part and a movable part, the fixed part is fixedly connected with the first gear ring, the movable part is fixedly connected with the first planet carrier, and the fixed part and the movable part can be matched and separated with each other so that the clutch has a combined state and a separated state;
when the movable inner gear ring is in a fixed state, the clutch is in a separated state, and when the movable inner gear ring is in a movable state, the clutch is in a combined state.
2. The electric drive system of claim 1, wherein the second planetary arrangement further comprises second planet gears and third planet gears, the second planet gears being connected in parallel with the third planet gears and through the second planet carrier, the second planet gears being in mesh with the second sun gear, and the third planet gears being in mesh with the second ring gear.
3. The electric drive system of claim 1, wherein the gear-movement switching mechanism further comprises a housing fixedly connected with the case, a fixed ring gear fixedly mounted to the housing, and a gear sleeve mounted to the housing and movably disposed along an axis parallel to an output shaft of the drive motor to have a first position engaged with the fixed ring gear and the movable ring gear so that the movable ring gear is in a fixed state, and a second position engaged with the fixed ring gear and separated from the movable ring gear so that the movable ring gear is in a movable state;
when the movable inner gear ring is in a fixed state, the first gear ring and the box body are relatively fixed.
4. The electric drive system of claim 1, wherein the drive motor, the first planetary row, the second planetary row, and the differential are coaxially disposed.
5. An electric drive system according to claim 1, wherein the output shaft of the drive motor is arranged coaxially with the left and right half shafts of the differential.
6. The electric drive system of claim 5, wherein the differential further comprises a left side gear, a right side gear, a planet carrier, and two planet gears, the planet carrier being fixedly connected to the differential case, the left side gear and the right side gear being in mesh with the two planet gears, respectively;
and the shaft end of the left half axle gear sequentially penetrates through the second sun gear, the first sun gear and the output shaft of the driving motor.
7. The electric drive system of claim 1 wherein said differential case and said second planetary row are integrally disposed.
8. A power system for an electric vehicle, characterized in that it comprises an electric drive system according to any one of claims 1-7.
9. An electric vehicle characterized by comprising the power system of the electric vehicle according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220441416.7U CN216942675U (en) | 2022-03-01 | 2022-03-01 | Electric drive system, electric automobile's driving system and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220441416.7U CN216942675U (en) | 2022-03-01 | 2022-03-01 | Electric drive system, electric automobile's driving system and electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN216942675U true CN216942675U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220441416.7U Active CN216942675U (en) | 2022-03-01 | 2022-03-01 | Electric drive system, electric automobile's driving system and electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216942675U (en) |
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2022
- 2022-03-01 CN CN202220441416.7U patent/CN216942675U/en active Active
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