CN218948924U - Power transmission device, power system and vehicle - Google Patents
Power transmission device, power system and vehicle Download PDFInfo
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- CN218948924U CN218948924U CN202320135827.8U CN202320135827U CN218948924U CN 218948924 U CN218948924 U CN 218948924U CN 202320135827 U CN202320135827 U CN 202320135827U CN 218948924 U CN218948924 U CN 218948924U
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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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- Y02T10/62—Hybrid vehicles
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Abstract
The utility model provides a power transmission device, a power system and a vehicle. According to the power transmission device, the two groups of planetary gear mechanisms are arranged, the first control mechanism is arranged to control the power on-off of the input shaft and the external power source, and the second control mechanism is arranged to control the power on-off of the first planet carrier and the external power source, so that the whole structure is more compact, the gear shifting strategy is simple, the gear shifting is smooth, and the power performance is good.
Description
Technical Field
The utility model relates to the technical field of vehicle power transmission, in particular to a power transmission device. The utility model also relates to a power system comprising the power transmission device, and a vehicle provided with the power system.
Background
The running of a vehicle requires a powertrain in addition to the wheels. The powertrain typically includes an engine, an electric machine, or both, and a transmission. A transmission is a mechanism for changing the rotational speed and torque from an engine that is capable of fixed or stepped changes in the ratio of the output shaft to the input shaft, also known as a gearbox.
The transmission comprises a housing and a power transmission device arranged in the housing. The power transmission device generally includes an input member connected to an engine side, an output member connected to a transmission and a drive wheel side, and the like.
The existing speed changer for the pure electric power system is limited by the self structure of the power transmission device, the available gear is limited, the 1 gear and the 2 gear are the main, and the power performance of the whole vehicle is poor. In order to improve the power of the whole vehicle, the general engine with large displacement needs to be replaced or a high-power motor is adopted, so that the manufacturing cost of the whole system is increased, the weight of the replaced engine or motor is larger, the occupied space is larger, and the whole arrangement mode of the device is single. In addition, existing transmissions for purely electric powertrain systems generally do not have AT architecture, shift unevenly, and shift easily to jerk, resulting in poor applicability.
Disclosure of Invention
In view of the above, the present utility model aims to provide a power transmission device, which is beneficial to improving the application performance thereof.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
a power transmission device comprises an input shaft, a first planetary gear mechanism, a second planetary gear mechanism, an output shaft, a plurality of control mechanisms and a plurality of brakes, wherein the first planetary gear mechanism and the second planetary gear mechanism are arranged at intervals along the axial direction of the input shaft;
the first sun gear of the first planetary gear mechanism is sleeved on the input shaft in a hollow mode, and the second sun gear of the second planetary gear mechanism is arranged on the input shaft;
the first planet carrier of the first planetary gear mechanism is in transmission connection with the second gear ring of the second planetary gear mechanism, the first gear ring of the first planetary gear mechanism is in transmission connection with the second planet carrier of the second planetary gear mechanism, and the second planet carrier is in transmission connection with the output shaft;
the plurality of control mechanisms comprise a first control mechanism connected with the input shaft and a second control mechanism connected with the first planet carrier; the first control mechanism is used for controlling the power on-off between the input shaft and the external power source, and the second control mechanism is used for controlling the power on-off between the first planet carrier and the external power source;
the plurality of brakes includes a first brake for braking the first sun gear and a second brake for braking the second ring gear.
Further, the second planet carrier is provided with a sleeving part sleeved on the input shaft;
the first sun wheel is sleeved on the sleeving part in a hollow mode.
Further, the first control mechanism includes a first clutch connected with the input shaft; and/or the second control mechanism comprises a second clutch connected with the sleeving part.
Further, the input shaft and the output shaft are coaxially arranged.
Compared with the prior art, the utility model has the following advantages:
according to the power transmission device, the two groups of planetary gear mechanisms are arranged, the first control mechanism is arranged to control the power on-off of the input shaft and the external power source, and the second control mechanism is arranged to control the power on-off of the first planet carrier and the external power source, so that the whole structure is more compact; each gear is arranged by a control mechanism and a brake, when the adjacent gears are switched, only one control mechanism or one brake is required to be switched, and the gear shifting strategy is simple; because of more gears, the power transmission device has smooth gear shifting and better dynamic property.
In addition, the second planet carrier is provided with a sleeving part sleeved on the input shaft, and the first sun wheel is sleeved on the sleeving part, so that the size occupied by the power transmission device in the axial direction of the input shaft is reduced conveniently, and the whole structure is more compact. In addition, the first control mechanism comprises a first clutch, the second control mechanism comprises a second clutch, the existing clutch can be adopted, the cost is low, and the arrangement is convenient. Because the sleeve part is sleeved on the input shaft, the first clutch and the second clutch can be adjacently arranged in actual arrangement, so that the structure of the power transmission device is more compact. The coaxial arrangement of the input shaft and the output shaft also makes the structure of the power transmission device more compact.
In addition, the power transmission device provided by the utility model has the advantages that the matched power source comprises the motor or comprises the engine and the motor, when the power transmission device is arranged on a vehicle, the power transmission device can be matched with different power sources according to the vehicle type, the application range is wide, and the platform is facilitated.
Another object of the present utility model is to propose a power system comprising a power transmission device as described above.
Further, the power system further comprises a first motor, and the power output end of the first motor is connected with the first control mechanism and the second control mechanism respectively.
Further, the power system further comprises an engine, and a power output end of the engine is connected with a power input end of the first motor through a third clutch.
Further, the power system further comprises a first motor and a second motor, wherein the power output end of the first motor is connected with the first control mechanism, and the power output end of the second motor is connected with the second control mechanism.
Further, the power system further comprises an engine;
the power output end of the engine is connected with the power input end of the first motor through a third clutch, or the power output end of the engine is connected with the power input end of the second motor through a third clutch.
Compared with the prior art, the utility model has the following advantages:
according to the power system, the power transmission device is arranged, so that the occupied space can be reduced, the space utilization rate is improved, and the whole power system is convenient to arrange. In addition, the power performance is good, the gear shifting is smooth, the gear shifting modes are more, the gear shifting strategy is simple, and the use requirements of customers can be better met.
In addition, the power system further comprises a first motor and a second motor, the motor is integrated on the power system, a power output end shaft of the motor can be connected with the first control mechanism and the second control mechanism, and all gears can be made to realize a pure electric driving mode, so that the use requirements of customers can be better met.
In addition, the power system further comprises an engine, and the power output end of the engine is connected with the input shaft of the motor through integrating the engine on the power system, so that hybrid driving can be realized, and the requirements of customers are further met.
Another object of the utility model is to propose a vehicle provided with a power system as described above.
According to the vehicle, by arranging the power system, not only can the occupied space be saved, but also the vehicle has good power performance, has smooth gear shifting and more gear modes, and is beneficial to improving the driving pleasure of customers.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic view of a power transmission device according to an embodiment of the present utility model in an applied state;
FIG. 2 is a schematic view of a power transmission path of a power transmission device in a first gear mode according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a power transmission path of a power transmission device in a second gear mode according to an embodiment of the present utility model;
FIG. 4 is a schematic view of a power transmission path of a power transmission device in a third gear mode according to an embodiment of the present utility model;
FIG. 5 is a schematic view of a power transmission path of a power transmission device according to an embodiment of the present utility model in a fourth gear mode;
fig. 6 is a control logic diagram of a power transmission device gear shift according to an embodiment of the present utility model.
Reference numerals illustrate:
1. an input shaft; 2. a first planetary gear mechanism; 201. a first sun gear; 202. a first planet; 203. a first planet carrier; 204. a first ring gear; 3. a second planetary gear mechanism; 301. a second sun gear; 302. a second planet wheel; 303. a second carrier; 304. a second ring gear; 305. a sleeving part;
4. an output shaft; 5. a first clutch; 6. a second clutch; 7. a first brake; 8. a second brake; 9. a first motor; 10. a main speed reducer.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "back", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection can be fixed connection, detachable connection or integrated connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.
The utility model will be described in detail below with reference to the drawings in connection with embodiments.
The present embodiment relates to a power transmission device, which includes, in its entire constitution, as shown in fig. 1, an input shaft 1, first and second planetary gear mechanisms 2 and 3 arranged at intervals in the axial direction of the input shaft 1, an output shaft 4, and a plurality of control mechanisms and a plurality of brakes.
The first sun gear 201 of the first planetary gear mechanism 2 is sleeved on the input shaft 1, and the second sun gear 301 of the second planetary gear mechanism 3 is arranged on the input shaft 1. At the same time, the first planet carrier 203 of the first planetary gear mechanism 2 is in driving connection with the second ring gear 304 of the second planetary gear mechanism 3, the first ring gear 204 of the first planetary gear mechanism 2 is in driving connection with the second planet carrier 303 of the second planetary gear mechanism 3, and the second planet carrier 303 is in driving connection with the output shaft 4.
Further, the plurality of control mechanisms includes a first control mechanism connected to the input shaft 1, and a second control mechanism connected to the first carrier 203; the first control mechanism is used for controlling the power on-off between the input shaft 1 and the external power source, and the second control mechanism is used for controlling the power on-off between the first planet carrier 203 and the external power source.
In addition, the plurality of brakes includes a first brake 7 for braking the first sun gear 201, and a second brake 8 for braking the second ring gear 304.
The power transmission device of the embodiment is characterized in that by arranging two groups of planetary gear mechanisms and arranging a first control mechanism to control the power on-off of the input shaft 1 and an external power source and a second control mechanism to control the power on-off of the first planet carrier 203 and the external power source, the whole structure can be more compact; each gear is arranged by a control mechanism and a brake, when the adjacent gears are switched, only one control mechanism or one brake is required to be switched, and the gear shifting strategy is simple; because of more gears, the power transmission device has smooth gear shifting and better dynamic property.
Based on the above design concept, an exemplary structure of the power transmission device of the present embodiment is shown in fig. 1, in which the first planetary gear mechanism 2 and the second planetary gear mechanism 3 are sequentially arranged along the axial direction of the input shaft 1, and the first sun gear 201 in the first planetary gear mechanism 2 is sleeved on the input shaft 1, and the second sun gear 301 in the second planetary gear mechanism 3 is provided on the input shaft 1, and the input shaft 1 can directly transmit power to the second sun gear 301.
As a preferred embodiment, the second planet carrier 303 has a sleeve portion 305 that is sleeved on the input shaft 1, and the first sun gear 201 is sleeved on the sleeve portion 305. Referring to fig. 1, the second carrier 303 is connected to an external power source through one end of the socket 305. External power may be transmitted through the sleeve portion 305 to the first carrier 203 and further through the first carrier 203 to the second ring gear 304. In addition, the second carrier 303 may be directly connected to an external power source.
In a preferred embodiment, the second control mechanism includes a second clutch 6 connected to the housing 305, and the second clutch 6 is used to control the power between the external power source and the housing 305, so as to control whether the first carrier 203 receives the driving force. When the second clutch 6 is engaged, the external power source can transmit power directly to the first carrier 203 through the second clutch 6 and finally into the output shaft 4 and the final drive 10 through the second planetary gear mechanism 3.
To facilitate the overall arrangement of the power transmission device, in this embodiment, as a preferred embodiment, the input shaft 1 and the output shaft 4 are coaxially arranged, so that the overall structure is more compact, and the arrangement of the first planetary gear mechanism 2 and the second planetary gear mechanism 3 can be facilitated, while the power transmission efficiency between each gear pair can be improved.
As a preferred embodiment, the first control mechanism includes a first clutch 5 connected to the input shaft 1, and the first clutch 5 is used to control the power between the external power source and the input shaft 1. In the engaged state of the first clutch 5, external power is transmitted directly to the second sun gear 301, and thus to the second planetary gear mechanism 3, through the input shaft 1, and finally to the output shaft 4 and the final drive 10.
In the power transmission device of the embodiment, the sleeve portion 305 is disposed in the second planetary gear mechanism 3, and the first sun gear 201 is sleeved on the sleeve portion 305 and is sleeved on the input shaft 1, so that the space occupied by the first planetary gear mechanism 2 and the second planetary gear mechanism 3 in the axial direction of the input shaft 1 can be reduced, the overall arrangement of the first planetary gear mechanism 2 and the second planetary gear mechanism 3 on the input shaft 1 is facilitated, and the structure of the whole power transmission device is more compact.
The embodiment also relates to a power system comprising the power transmission device.
According to the power system of the embodiment, the occupied space can be reduced by arranging the power transmission device, and the whole arrangement of the power system is facilitated.
And as a preferred embodiment, the power system further comprises a first motor 9, and the power output end of the first motor 9 is respectively connected with the first control mechanism and the second control mechanism. Still referring to fig. 1, the power output end of the first motor 9 may be connected to the first control mechanism and the second control mechanism at the same time, and the first control mechanism and the second control mechanism may be engaged and disengaged to implement replacement of different gears.
On the premise of taking the gear as a transmission structure, the power system can realize four gear modes under pure electric driving.
In the first gear mode, the first clutch 5 engages the external power source and the input shaft 1, and the first brake 7 brakes the first sun gear 201. The power of the first motor 9 is transmitted to the second planetary gear mechanism 3 through the input shaft 1, transmitted to the output shaft 4 by the second carrier 303, and finally transmitted into the final drive 10.
In the second gear mode, the second clutch 6 engages the external power source and the first carrier 203, and the first brake 7 brakes the first sun gear 201. The power of the first motor 9 is transmitted to the first carrier 203 through the second clutch 6, to the second carrier 303 through the first ring gear 204, and finally to the final drive 10 through the output shaft 4.
In the third gear mode, the first clutch 5 engages the external power source and the input shaft 1, and the second brake 8 brakes the second ring gear 304. The power of the first motor 9 is transmitted to the second planetary gear mechanism 3 through the input shaft 1, transmitted to the output shaft 4 by the second carrier 303, and finally transmitted into the final drive 10.
In the fourth gear mode, the first clutch 5 engages the external power source and the input shaft 1, and the second clutch 6 engages the external power source and the first carrier 203. The power of the first motor 9 can be transmitted to the second planet carrier 303 through the first planet carrier 203 and the first gear ring 204 and further transmitted to the output shaft 4, while the power of the first motor 9 is transmitted to the second planet carrier 303 through the output shaft 4 and the second sun gear 301 and further transmitted to the output shaft 4 and finally transmitted to the main reducer 10.
In the power system of the present embodiment, the control method in each driving mode is shown in fig. 6. C1 represents the first clutch 5, C2 represents the second clutch 6, B1 represents the first brake 7, and B2 represents the second brake 8. When each gear mode is realized, the circled positions of the first clutch 5 and the second clutch 6 represent clutch combination, otherwise, the empty position represents clutch disconnection, the circled positions of the first brake 7 and the second brake 8 represent brake braking, and otherwise, the empty position represents brake non-action.
The first gear power transmission path can be described with reference to fig. 2: the first motor 9- > the first clutch 5- > the input shaft 1- > the second sun gear 301- > the second planet gears 302- > the second planet carrier 303- > the output shaft 4- > the final drive 10.
The secondary power transmission path may be as shown in fig. 3: the first electric machine 9→the second clutch 6→the first carrier 203→the first planet 202→the first ring gear 204→the second carrier 303→the output shaft 4→the final drive 10.
The three-gear power transmission route may be as shown in fig. 4: the first motor 9- > the first clutch 5- > the input shaft 1- > the second sun gear 301- > the second planet gears 302- > the second planet carrier 303- > the output shaft 4- > the final drive 10.
The four-speed power transmission route may be as shown with reference to fig. 5: the first motor 9- & gtthe first clutch 5- & gtthe input shaft 1- & gtthe second sun gear 301- & gtthe second planet gears 302- & gtthe second planet carrier 303- & gtthe output shaft 4- & gtthe main speed reducer 10; meanwhile, the power transmission path is also formed by a first motor 9, a second clutch 6, a first planet carrier 203, a second gear ring 304, a second planet wheel 302, a second planet carrier 303, an output shaft 4 and a main speed reducer 10.
It should be noted here that the reverse gear of the above power system can be achieved by reversing the first electric machine 9.
In addition, in this embodiment, in order to implement multiple driving modes, as a preferred embodiment, the power system further includes a first motor 9 and a second motor, which are not shown in the drawing, where both the first motor 9 and the second motor preferably use TM motors, and a power output end of the first motor 9 is connected to the first control mechanism, and a power output end of the second motor is connected to the second control mechanism. The power system can transmit power into the power transmission device by starting different motors so as to realize control of different gears. When the first motor 9 and the second motor are provided at the same time, the first motor 9 and the second motor can be caused to output driving force at the same time, or one of the motors can be caused to serve as a driving source, and the other motor can be used for recovering energy.
As a preferred embodiment, when only the first electric machine 9 is provided, the power system as above further includes an engine, not shown in the drawings, the power output end of which is connected to the power input end of the first electric machine 9 through a third clutch. According to the power system, the third clutch can be disconnected, power is output by the first motor 9 only, pure electric driving is achieved, and a hybrid driving mode of common driving of the engine and the first motor 9 is achieved by engaging the third clutch, so that the requirements of customers are further met.
As another preferred embodiment, when the first motor 9 and the second motor are provided at the same time, the power system in this embodiment further includes an engine, not shown in the drawing, whose power output end is connected to the power input end of the first motor 9 through a third clutch. Alternatively, the power output end of the engine is connected with the power input end of the second motor through the third clutch. The power system can also realize a pure electric drive mode and a mixed electric drive mode through the connection and disconnection of the third clutch.
The utility model also relates to a vehicle provided with a power system as described above.
The vehicle of the embodiment can increase the gear of the vehicle by adopting the power system, has smooth gear shifting and good dynamic property, and is beneficial to improving the quality of the vehicle.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (10)
1. A power transmission device characterized in that:
comprises an input shaft (1), a first planetary gear mechanism (2) and a second planetary gear mechanism (3) which are arranged at intervals along the axial direction of the input shaft (1), an output shaft (4), a plurality of control mechanisms and a plurality of brakes;
the first sun gear (201) of the first planetary gear mechanism (2) is sleeved on the input shaft (1), and the second sun gear (301) of the second planetary gear mechanism (3) is arranged on the input shaft (1);
the first planet carrier (203) of the first planetary gear mechanism (2) is in transmission connection with the second gear ring (304) of the second planetary gear mechanism (3), the first gear ring (204) of the first planetary gear mechanism (2) is in transmission connection with the second planet carrier (303) of the second planetary gear mechanism (3), and the second planet carrier (303) is in transmission connection with the output shaft (4);
the plurality of control mechanisms comprises a first control mechanism connected with the input shaft (1) and a second control mechanism connected with the first planet carrier (203); the first control mechanism is used for controlling the power on-off between the input shaft (1) and an external power source, and the second control mechanism is used for controlling the power on-off between the first planet carrier (203) and the external power source;
the plurality of brakes comprises a first brake (7) for braking the first sun gear (201) and a second brake (8) for braking the second ring gear (304).
2. The power transmission device according to claim 1, characterized in that:
the second planet carrier (303) is provided with a sleeving part (305) sleeved on the input shaft (1);
the first sun gear (201) is sleeved on the sleeving part (305) in an empty mode.
3. The power transmission device according to claim 2, characterized in that:
the first control mechanism comprises a first clutch (5) connected with the input shaft (1); and/or the number of the groups of groups,
the second control mechanism comprises a second clutch (6) connected to the sleeve part (305).
4. A power transmission device according to any one of claims 1-3, characterized in that:
the input shaft (1) and the output shaft (4) are coaxially arranged.
5. A power system, characterized by:
the power system includes the power transmission device according to any one of claims 1 to 4.
6. The power system of claim 5, wherein:
the power system further comprises a first motor (9), and the power output end of the first motor (9) is connected with the first control mechanism and the second control mechanism respectively.
7. The power system of claim 6, wherein:
the power system further comprises an engine, and the power output end of the engine is connected with the power input end of the first motor (9) through a third clutch.
8. The power system of claim 5, wherein:
the power system further comprises a first motor (9) and a second motor, wherein the power output end of the first motor (9) is connected with the first control mechanism, and the power output end of the second motor is connected with the second control mechanism.
9. The power system of claim 8, wherein:
the power system further includes an engine;
the power output end of the engine is connected with the power input end of the first motor (9) through a third clutch, or the power output end of the engine is connected with the power input end of the second motor through a third clutch.
10. A vehicle, characterized in that:
the vehicle is provided with a power system according to any one of claims 5-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320135827.8U CN218948924U (en) | 2023-01-15 | 2023-01-15 | Power transmission device, power system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320135827.8U CN218948924U (en) | 2023-01-15 | 2023-01-15 | Power transmission device, power system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218948924U true CN218948924U (en) | 2023-05-02 |
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ID=86136692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320135827.8U Active CN218948924U (en) | 2023-01-15 | 2023-01-15 | Power transmission device, power system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218948924U (en) |
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2023
- 2023-01-15 CN CN202320135827.8U patent/CN218948924U/en active Active
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