All-terrain vehicle and power system thereof

Abstract

The utility model relates to the field of vehicles, aims at solving the problems that a power system of a known all-terrain vehicle is large in occupied space and low in power density, and provides an all-terrain vehicle and a power system of the all-terrain vehicle. The all-terrain vehicle comprises a vehicle frame, a walking system and a power system. The power system comprises an engine, a first motor, a second motor, a planet wheel mechanism, a clutch and an output shaft. The clutch is arranged in a first rotor of the first motor. And the planet wheel mechanism is arranged in a second rotor of the second motor. An output shaft of the engine is connected with the first rotor. The second rotor and the first rotor are coaxially arranged, one end of the output shaft is connected to the first rotor through the clutch in a clutch mode, and the other end of the output shaft is in transmission connection to the second rotor through the planet wheel mechanism. The power system has the advantages of being good in pure electric driving feeling, low in feed oil consumption, small in appearance size and high in power density.

Description

Technical Field

[0001] This application relates to the field of vehicles, and more specifically, to all-terrain vehicles and their power systems. Background Technology

[0002] An all-terrain vehicle (ATV) is a vehicle that can travel off-road. For example, ATVs can travel in deserts, jungles, and other similar environments.

[0003] Some known all-terrain vehicles employ hybrid powertrains; however, the powertrains of these vehicles occupy a large space, have low power density, reduce acceleration performance, and limit top speed. Utility Model Content

[0004] This application provides an all-terrain vehicle and its power system, which occupies a small space and has a high power density.

[0005] In a first aspect, this application provides an all-terrain vehicle, comprising a frame, a running gear system, and a power system. The running gear system is at least partially located below the frame. The power system is mounted on the frame and is driveably connected to the running gear system. The power system includes an engine, a first motor, a second motor, a planetary gear mechanism, a clutch, and an output shaft. The first motor includes a first stator and a first rotor, the first rotor being rotatably disposed within the first stator; a first internal space is provided inside the first rotor; the clutch is disposed within the first internal space. The second motor includes a second stator and a second rotor, the second rotor being rotatably disposed within the second stator; a second internal space is provided inside the second rotor; the planetary gear mechanism is disposed within the second internal space. The output shaft of the engine is connected to the first rotor and is capable of driving the first rotor to rotate. The second rotor and the first rotor are coaxially arranged, one end of the output shaft is disengagedly connected to the first rotor via a clutch, and the other end of the output shaft is driveably connected to the second rotor via a planetary gear mechanism.

[0006] The all-terrain vehicle of this application employs a P1+P3 hybrid architecture, consisting of an engine, a first motor, and a second motor. The first motor can be used to start the engine, regenerate kinetic energy for power generation, and provide auxiliary drive output. The second motor can provide direct drive output. The engine can provide either range-extended output or direct drive output.

[0007] The powertrain system features an architecture that provides a good pure electric driving experience and low fuel consumption when the battery is depleted. At the same time, by embedding the clutch in the first rotor of the first motor and the planetary gear mechanism in the second rotor of the second motor, the axial space is fully utilized, greatly reducing the overall size of the powertrain system and effectively improving the power density of the powertrain system.

[0008] In one possible implementation, the planetary gear mechanism includes a ring gear, a sun gear, planet gears, and a planet carrier. The sun gear is located within the ring gear, the planet gears mesh between the sun gear and the ring gear, and the planet carrier is connected to the planet gears. The planet carrier is fixedly mounted, the sun gear is connected to a second rotor, and the ring gear is connected to the output shaft.

[0009] In one possible implementation, the planetary gear mechanism includes a ring gear, a sun gear, planet gears, and a planet carrier. The sun gear is located within the ring gear, the planet gears mesh between the sun gear and the ring gear, and the planet carrier is connected to the planet gears. The ring gear is fixedly mounted, the sun gear is connected to a second rotor, and the planet carrier is connected to the output shaft.

[0010] In one possible implementation, there are multiple planetary gears, which are evenly arranged around the sun gear.

[0011] In one possible implementation, the power system also includes a differential, with the output shaft driven to the input end of the differential, and the output side of the differential used to connect to the running gear system.

[0012] In one possible implementation, the power system further includes an intermediate shaft, which is substantially parallel to and spaced apart from the output shaft. The output shaft has a first gear, and the intermediate shaft has a second gear; the first and second gears mesh with each other. The input end of the differential has a third gear, which meshes with the second gear.

[0013] In one possible implementation, the engine is located on the side of the first motor away from the second motor.

[0014] In one possible implementation, the engine's output shaft and output shaft are coaxial.

[0015] In one possible implementation, the engine's output shaft is connected to the side of the first rotor opposite to the second rotor via a connecting plate.

[0016] Secondly, this application provides a power system including an engine, a first motor, a second motor, a planetary gear mechanism, a clutch, and an output shaft. The first motor includes a first stator and a first rotor, with the first rotor rotatably disposed within the first stator; a first internal space is provided inside the first rotor; and the clutch is disposed within the first internal space. The second motor includes a second stator and a second rotor, with the second rotor rotatably disposed within the second stator; a second internal space is provided inside the second rotor; and the planetary gear mechanism is disposed within the second internal space. The output shaft of the engine is connected to the first rotor and can drive the first rotor to rotate. The second rotor and the first rotor are coaxially arranged, with one end of the output shaft being disengaged and engageably connected to the first rotor via a clutch, and the other end of the output shaft being driven to the second rotor via the planetary gear mechanism. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of an all-terrain vehicle according to an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the power system according to an embodiment of this application. Detailed Implementation

[0020] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] Some embodiments of this application are described in detail. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0024] See Figure 1 This embodiment provides an all-terrain vehicle 100, including a frame 11, a running system 12, and a power system 13.

[0025] The running gear 12 is located at least partially under the frame 11, and the running gear 12 mainly includes four tires. The power system 13 is located on the frame 11 and is connected to the running gear 12 for driving the running gear 12 to propel the all-terrain vehicle 100.

[0026] See Figure 2 In this embodiment, the power system 13 is a hybrid system, which forms a P1+P3 hybrid architecture by combining an engine 131 and two motors (the first motor 132 and the second motor 133, respectively), which can realize a variety of different drive output forms, which will be described in detail below.

[0027] In this embodiment, the power system 13 includes an engine 131, a first motor 132, a second motor 133, a planetary gear mechanism 134, a clutch 135, and an output shaft 136.

[0028] Among them, engine 131 can be an internal combustion engine, which can convert the chemical energy of fuel (such as diesel or gasoline) into mechanical energy to drive all-terrain vehicle 100.

[0029] The first motor 132 includes a first stator 1321 and a first rotor 1322, the first rotor 1322 being rotatably disposed within the first stator 1321. When energized, the first rotor 1322 can be driven to rotate to output torque. In this embodiment, a first internal space 1323 is provided inside the first rotor 1322, and a clutch 135 is disposed in the first internal space 1323.

[0030] The second motor 133 includes a second stator 1331 and a second rotor 1332, the second rotor 1332 being rotatably disposed within the second stator 1331. When energized, the second rotor 1332 can be driven to rotate to output torque. A second internal space 1333 is provided inside the second rotor 1332, and a planetary gear mechanism 134 is disposed in the second internal space 1333.

[0031] In this embodiment, the output shaft of the engine 131 is connected to the first rotor 1322 of the first motor 132 and can drive the first rotor 1322 to rotate. In this embodiment, the engine 131 is located on the side of the first motor 132 away from the second motor 133. The output shaft and output shaft 136 of the engine 131 are coaxial. The output shaft of the engine 131 is connected to the side of the first rotor 1322 away from the second rotor 1332 via a connecting plate 142.

[0032] The second rotor 1332 and the first rotor 1322 are coaxially arranged. One end of the output shaft 136 is disengaged and engageably connected to the first rotor 1322 via a clutch 135, and the other end of the output shaft 136 is driven to the second rotor 1332 via a planetary gear mechanism 134.

[0033] The all-terrain vehicle 100 in this embodiment adopts a P1+P3 hybrid architecture consisting of an engine 131, a first motor 132 (or P1 motor), and a second motor 133 (or P3 motor). The first motor 132 can be used to start the engine 131, recover kinetic energy to generate electricity, and provide auxiliary drive output. The second motor 133 can provide direct drive output. The engine 131 can provide range extension output or direct drive output.

[0034] Specifically, when the clutch 135 is engaged, the first motor 132 can drive the engine 131 to start; after the engine 131 starts, the engine 131 can drive the output shaft 136 to rotate through the first rotor 1322 to achieve power output; when the clutch 135 is disengaged, the second motor 133 can directly drive the output shaft 136 to rotate through the planetary gear mechanism to achieve pure electric drive output.

[0035] The power system 13 in this embodiment adopts an architecture that provides a good pure electric driving experience and low fuel consumption when the battery is depleted. At the same time, by embedding the clutch 135 in the first rotor 1322 of the first motor 132 and embedding the planetary gear mechanism 134 in the second rotor 1332 of the second motor 133, the axial space is fully utilized, the external size of the power system 13 is greatly reduced, and the power density of the power system 13 is effectively improved.

[0036] See also Figure 2 Optionally, the planetary gear mechanism 134 includes a ring gear 1341, a sun gear 1342, planet gears 1343, and a planet carrier 1344. The sun gear 1342 is located inside the ring gear 1341, the planet gears 1343 are meshed between the sun gear 1342 and the ring gear 1341, and the planet carrier 1344 is connected to the planet gears 1343. There can be multiple planet gears 1343, which are evenly arranged around the sun gear 1342. The planet carrier 1344 is fixedly installed, the sun gear 1342 is connected to the second rotor 1332, and the ring gear 1341 is connected to the output shaft 136. Thus, when the second motor 133 starts, the second rotor 1332 of the second motor 133 drives the sun gear 1342 to rotate, which in turn drives the ring gear 1341 to rotate via the planet gears 1343, and the ring gear 1341 drives the output shaft 136 to rotate, thereby achieving power output.

[0037] Of course, in other embodiments, the input and output positions of the planetary gear mechanism 134 can also be changed. For example, the gear ring 1341 is fixedly set, the sun gear 1342 is connected to the second rotor 1332 as the input side, and the planet carrier 1344 is connected to the output shaft 136 as the output side.

[0038] In this embodiment, the power system 13 also includes a differential 137, and the output shaft 136 is driven to the input side of the differential 137. The output side of the differential 137 is used to connect to the walking system 12, such as connecting to the wheels of the walking system 12.

[0039] The power system 13 also includes an intermediate shaft 138, which is substantially parallel to the output shaft 136. "Substantially parallel" here means that they can be parallel or have a small angle (e.g., less than 1°). The output shaft 136 has a first gear 139, and the intermediate shaft 138 has a second gear 140, which mesh with each other. The differential 137 has a third gear 141 on its input side, which meshes with the second gear 140.

[0040] Thus, the power from the output shaft 136 is transmitted to the intermediate shaft 138 through the meshing of the first gear 139 and the second gear 140, and then to the differential 137 through the meshing of the second gear 140 and the third gear 141, and further to the travel system 12. By properly setting the transmission ratios of the first gear 139 and the second gear 140, as well as the transmission ratio of the second gear 140 and the third gear 141, the torque and speed output to the differential 137 can be kept within a suitable range.

[0041] In this embodiment, the power system 13 can be used not only for the all-terrain vehicle 100, but also for other three-wheeled or four-wheeled vehicles, without limitation.

[0042] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. An all-terrain vehicle, comprising: Frame; A walking system, at least partially located below the vehicle frame; A power system, which is supported by the vehicle frame and is used to drive the running gear; Its features are, The power system includes an engine, a first motor, a second motor, a planetary gear mechanism, a clutch, and an output shaft; The first motor includes a first stator and a first rotor, the first rotor being rotatably disposed within the first stator; a first internal space is provided inside the first rotor; the clutch is disposed within the first internal space; The second motor includes a second stator and a second rotor, the second rotor being rotatably disposed within the second stator; a second internal space is provided inside the second rotor; the planetary gear mechanism is disposed within the second internal space; The output shaft of the engine is connected to the first rotor and can drive the first rotor to rotate; The second rotor and the first rotor are coaxially arranged. One end of the output shaft is disengaged and engageably connected to the first rotor via the clutch, and the other end of the output shaft is driven to the second rotor via the planetary gear mechanism.

2. The all-terrain vehicle according to claim 1, characterized in that: The planetary gear mechanism includes a ring gear, a sun gear, planet gears, and a planet carrier; The sun gear is located inside the gear ring, the planet gears are meshed between the sun gear and the gear ring, and the planet carrier is connected to the planet gears; The planetary carrier is fixedly mounted, the sun gear is connected to the second rotor, and the gear ring is connected to the output shaft.

3. The all-terrain vehicle according to claim 1, characterized in that: The planetary gear mechanism includes a ring gear, a sun gear, planet gears, and a planet carrier; The sun gear is located inside the gear ring, the planet gears are meshed between the sun gear and the gear ring, and the planet carrier is connected to the planet gears; The gear ring is fixedly installed, the sun gear is connected to the second rotor, and the planet carrier is connected to the output shaft.

4. The all-terrain vehicle according to claim 2 or 3, characterized in that: There are multiple planetary gears, which are evenly arranged around the sun gear.

5. The all-terrain vehicle according to claim 1, characterized in that: The power system also includes a differential, the output shaft is driven to the input end of the differential, and the output side of the differential is used to connect to the walking system.

6. The all-terrain vehicle according to claim 5, characterized in that: The power system also includes an intermediate shaft, which is arranged substantially parallel to and spaced apart from the output shaft. The output shaft is provided with a first gear, and the intermediate shaft is provided with a second gear, the first gear and the second gear meshing with each other; The input end of the differential is provided with a third gear, which meshes with the second gear.

7. The all-terrain vehicle according to claim 1, characterized in that: The engine is located on the side of the first motor away from the second motor.

8. The all-terrain vehicle according to claim 7, characterized in that: The engine's output shaft is coaxial with the output shaft.

9. The all-terrain vehicle according to claim 7, characterized in that: The engine's output shaft is connected to the side of the first rotor opposite to the second rotor via a connecting plate.

10. A power system, characterized in that: It includes an engine, a first motor, a second motor, a planetary gear mechanism, a clutch, and an output shaft; The first motor includes a first stator and a first rotor, the first rotor being rotatably disposed within the first stator; a first internal space is provided inside the first rotor; the clutch is disposed within the first internal space; The second motor includes a second stator and a second rotor, the second rotor being rotatably disposed within the second stator; a second internal space is provided inside the second rotor; the planetary gear mechanism is disposed within the second internal space; The output shaft of the engine is connected to the first rotor and can drive the first rotor to rotate; The second rotor and the first rotor are coaxially arranged. One end of the output shaft is disengaged and engageably connected to the first rotor via the clutch, and the other end of the output shaft is driven to the second rotor via the planetary gear mechanism.

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