Power assembly for vehicle and vehicle

Abstract

The utility model discloses a power assembly for a vehicle and the vehicle. The power assembly comprises a power input shaft, a planet row assembly, a front axle output shaft and a rear axle output shaft. The planet row assembly comprises a first sun gear, a first planet carrier and a first gear ring which are matched with one another, and one of the first sun gear, the first planet carrier and the first gear ring is connected to the power input shaft; the front axle output shaft is in transmission connection with the other one of the first sun gear, the first planet carrier and the first gear ring; the rear axle output shaft is in transmission connection with the other one of the first sun gear, the first planet carrier and the first gear ring. According to the power assembly, power distribution is achieved through the planet row assembly, the requirements of different four-wheel drive vehicle types can be met, and the power assembly is compact in structure and convenient to carry on the whole vehicle.

Description

Technical Field

[0001] This utility model relates to the field of vehicles, and in particular to a powertrain for vehicles and a vehicle. Background Technology

[0002] The main function of a transfer case is to distribute power appropriately between the front and rear axles of a vehicle to achieve four-wheel drive. Different types of four-wheel drive vehicles have different positioning, usage scenarios, and performance requirements, which places diverse demands on the architecture of the transfer case.

[0003] In related technologies, the transfer case architecture suffers from limited adaptability. Its relatively fixed architecture makes it difficult to flexibly adapt to the diverse needs of different four-wheel drive vehicles, increasing development costs. Utility Model Content

[0004] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a powertrain for vehicles. According to this invention, the powertrain achieves power distribution through a planetary gear set, adapting to the needs of different four-wheel drive models, and has a compact structure for easy vehicle integration.

[0005] This utility model also proposes a vehicle having the above-mentioned powertrain.

[0006] The powertrain according to this utility model is used in a vehicle, the powertrain comprising: a power input shaft; a planetary gear assembly, the planetary gear assembly including a first sun gear, a first planet carrier, and a first ring gear that cooperate with each other, one of the first sun gear, the first planet carrier, and the first ring gear being connected to the power input shaft; a front axle output shaft, the front axle output shaft being drive-connected to another of the first sun gear, the first planet carrier, and the first ring gear; and a rear axle output shaft, the rear axle output shaft being drive-connected to the remaining one of the first sun gear, the first planet carrier, and the first ring gear.

[0007] According to the powertrain of this invention, power is transmitted to the planetary gear set via the power input shaft. The planetary gear set distributes the power according to the connection relationship and kinematic characteristics of its internal first sun gear, first planet carrier, and first ring gear. A portion of the power is transmitted to the front axle via the front axle output shaft, and the other portion is transmitted to the rear axle via the rear axle output shaft, thus achieving four-wheel drive. By rationally designing the connection relationship and transmission ratio of each component in the planetary gear set, the power distribution ratio to the front and rear axles can be flexibly adjusted to adapt to different driving conditions and the needs of four-wheel drive vehicles.

[0008] By adjusting the relevant transmission parameters, it can be easily adapted to different types of four-wheel drive vehicles, meeting the diverse power distribution needs of different models. Furthermore, the planetary gear set has a compact structure, enabling efficient power distribution within a limited space, resulting in a relatively small overall powertrain size. This facilitates layout and installation on the vehicle, reducing the difficulty of vehicle integration.

[0009] According to some embodiments of the present invention, the first planetary carrier is connected to the power input shaft, the front axle output shaft is driven to the first sun gear, and the rear axle output shaft is driven to the first gear ring.

[0010] According to some embodiments of the present invention, the powertrain further includes: a first gear connected to the front axle output shaft; and a second gear connected to the first sun gear and drivingly connected to the first gear.

[0011] According to some embodiments of the present invention, the second gear is coaxially arranged with the first sun gear, and the second gear and the first sun gear are respectively sleeved on the outer periphery of the power input shaft.

[0012] According to some embodiments of the present invention, the powertrain further includes: a transmission chain, which meshes with the first gear and the second gear respectively; or, a multi-gear, which has a first gear section and a second gear section, wherein the first gear section meshes with the first gear for transmission, and the second gear section meshes with the second gear for transmission.

[0013] According to some embodiments of the present invention, at least two of the first sun gear, the first planet carrier, and the first gear ring may be selectively engaged or disengaged from each other.

[0014] According to some embodiments of the present invention, the powertrain further includes: a first locking portion, the first locking portion being provided with a first engagement portion and a second engagement portion that can be selectively engaged or disengaged, the first engagement portion being connected to the first sun gear, and the second engagement portion being connected to the power input shaft.

[0015] According to some embodiments of the present invention, the powertrain further includes: a second locking part, the second locking part being disposed between the first gear ring and the first sun gear, the second locking part being used to selectively lock the first gear ring and the first sun gear in a locked connection.

[0016] According to some embodiments of the present invention, it further includes: a power device; a first transmission device, the first transmission device including a second sun gear, a second planet carrier, and a second ring gear that cooperate with each other, at least one of the second sun gear, the second planet carrier, and the second ring gear being connected to the output end of the power device, and at least another of the second sun gear, the second planet carrier, and the second ring gear forming the output end of the first transmission device, the first transmission device being adapted to selectively adjust the power output of the power device; a multi-speed transmission device, the input end of the multi-speed transmission device being connected to the output end of the first transmission device, the multi-speed transmission device being adapted to adjust the transmission ratio; a second transmission device, the input end of the second transmission device being selectively connected to the output end of the multi-speed transmission device, the second transmission device being adapted to adjust the power output of the multi-speed transmission device; wherein, the input end of the power input shaft is connected to the output end of the second transmission device.

[0017] The vehicle according to this utility model is briefly described below.

[0018] The vehicle according to this utility model includes the powertrain described in any of the above embodiments. Because the vehicle according to this utility model includes the powertrain described in any of the above embodiments, it has a compact structure, flexible power distribution, strong adaptability, and a four-wheel drive system that is easy to integrate into the vehicle.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a structural diagram of the planetary gear assembly, front axle output shaft and rear axle output shaft of a powertrain according to an embodiment of the present invention;

[0022] Figure 2 This is a structural diagram of the planetary gear assembly, front axle output shaft and rear axle output shaft of a powertrain according to another embodiment of the present invention;

[0023] Figure 3 This is a structural diagram of the planetary gear assembly, front axle output shaft and rear axle output shaft of the powertrain according to a first embodiment of the present invention;

[0024] Figure 4 This is a structural diagram of the planetary gear assembly, front axle output shaft and rear axle output shaft of a powertrain according to another embodiment of the present invention;

[0025] Figure 5 This is a partial structural diagram of a powertrain according to an embodiment of the present invention.

[0026] Figure label:

[0027] 111. Power input shaft; 112. Power unit;

[0028] 113. First transmission device; 1131. Second sun gear; 1132. Second planet carrier; 1133. Second gear ring;

[0029] 114. Multi-speed transmission device; 115. Second transmission device;

[0030] 12. Planetary gear assembly; 121. First sun gear; 122. First planet carrier; 123. First gear ring;

[0031] 13. Front axle output shaft; 14. Rear axle output shaft; 15. First gear; 16. Second gear; 17. Drive chain; 18. Multi-gear.

[0032] 191. First locking part; 192. Second locking part. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In related technologies, the transfer case architecture suffers from limited adaptability. Its relatively fixed architecture makes it difficult to flexibly adapt to the diverse needs of different four-wheel drive vehicles, increasing development costs.

[0037] The following is for reference. Figures 1-5 A powertrain according to an embodiment of the present invention is described.

[0038] like Figures 1-4 As shown, the powertrain according to this utility model is used in a vehicle. The powertrain includes a power input shaft 111, a planetary gear set 12, a front axle output shaft 13, and a rear axle output shaft 14. The power input shaft 111 is used to transmit power to the planetary gear set 12.

[0039] The planetary gear assembly 12 includes a first sun gear 121, a first planet carrier 122, and a first ring gear 123 that cooperate with each other. The planetary gear assembly 12 has a compact structure and a wide transmission ratio range, enabling various power distribution methods. One of the first sun gear 121, the first planet carrier 122, and the first ring gear 123 is connected to the power input shaft 111, allowing the power output from the power input shaft 111 to be directly transmitted to the planetary gear assembly 12, thus facilitating the distribution of the power output from the power input shaft 111.

[0040] The front axle output shaft 13 is driven to another of the first sun gear 121, the first planetary carrier 122, and the first ring gear 123. The front axle output shaft 13 is used to transmit power to the vehicle's front axle, transmitting the power distributed by the planetary gear assembly 12 to the front axle to drive the front wheels. By driving the front axle output shaft 13 to another of the first sun gear 121, the first planetary carrier 122, and the first ring gear 123, a portion of the power distributed by the planetary gear assembly 12 can be transmitted to the front axle output shaft 13.

[0041] The rear axle output shaft 14 is driven to one of the remaining components of the first sun gear 121, the first planetary carrier 122, and the first ring gear 123. The rear axle output shaft 14 transmits power to the vehicle's rear axle, allowing power distributed by the planetary gear assembly 12 to drive the rear wheels. By driving the rear axle output shaft 14 to one of the remaining components of the first sun gear 121, the first planetary carrier 122, and the first ring gear 123, efficient power transmission from the planetary gear assembly 12 to the rear axle output shaft 14 can be achieved.

[0042] Power is transmitted to the planetary gear set 12 via the power input shaft 111. The planetary gear set 12 distributes power according to the connection relationship and motion characteristics of its internal first sun gear 121, first planet carrier 122, and first ring gear 123. A portion of the power is transmitted to the front axle via the front axle output shaft 13, and the other portion is transmitted to the rear axle via the rear axle output shaft 14, thus achieving four-wheel drive. By rationally designing the connection relationship and transmission ratio of each component in the planetary gear set 12, the power distribution ratio to the front and rear axles can be flexibly adjusted to adapt to different driving conditions and the needs of four-wheel drive vehicles.

[0043] By adjusting the relevant transmission parameters, it can be easily adapted to different types of four-wheel drive vehicles, meeting the diverse power distribution needs of different models. Furthermore, the planetary gear set 12 has a compact structure, enabling efficient power distribution within a limited space. This results in a relatively small overall powertrain size, facilitating vehicle layout and installation, and reducing the difficulty of vehicle integration.

[0044] Therefore, the powertrain according to this utility model achieves power distribution through the planetary gear assembly 12, which can adapt to the needs of different four-wheel drive models, and has a compact structure that is easy to install in the whole vehicle.

[0045] It should be noted that the transmission connection method can be direct meshing, connection through gear pairs, or connection through other transmission mechanisms, depending on the design requirements.

[0046] According to some embodiments of this utility model, such as Figures 1-4 As shown, the first planetary carrier 122 is connected to the power input shaft 111, the front axle output shaft 13 is driven to the first sun gear 121, and the rear axle output shaft 14 is driven to the first gear ring 123.

[0047] By connecting the first planetary carrier 122 to the power input shaft 111, the power generated by the power source can be efficiently input into the planetary gear assembly 12, thereby distributing the power. When the power input shaft 111 rotates, it drives the first planetary carrier 122 to rotate as well. As a support structure for the planetary gears, the rotation of the first planetary carrier 122 drives the movement of the planetary gears, thus initiating the power distribution process of the entire planetary gear assembly 12.

[0048] By drivingly connecting the front axle output shaft 13 to the first sun gear 121, power transmission to the front axle is achieved after power distribution by the planetary gear set 12. In the planetary gear set 12, the first sun gear 121 meshes with the planet gears. When the first planet carrier 122 drives the planet gears, the planet gears interact with the first sun gear 121, transmitting a portion of the power to the first sun gear 121. Since the front axle output shaft 13 is driven by the first sun gear 121, this power is further transmitted to the front axle output shaft 13, ultimately driving the front wheels to rotate.

[0049] By connecting the rear axle output shaft 14 to the first ring gear 123, the planetary gear assembly 12 effectively distributes and transmits power to the rear axle. The first ring gear 123 meshes with the planetary gears. During the movement of the planetary gear assembly 12, the movement of the planetary gears also drives the rotation of the first ring gear 123. Because the rear axle output shaft 14 is connected to the first ring gear 123, the rotational power of the first ring gear 123 is transmitted to the rear axle output shaft 14, thereby driving the rear wheels to rotate.

[0050] By adjusting the transmission ratios of each component in the planetary gear assembly 12, the power ratios transmitted to the front axle output shaft 13 and the rear axle output shaft 14 can be controlled separately. Power is transmitted to the first planetary carrier 122 via the power input shaft 111, initiating the movement of the planetary gear assembly 12. The planetary gear assembly 12 distributes power according to the connection relationships and motion characteristics of its internal components. Part of the power is transmitted to the front axle output shaft 13 via the first sun gear 121, driving the front wheels to rotate; the other part of the power is transmitted to the rear axle output shaft 14 via the first ring gear 123, driving the rear wheels to rotate.

[0051] According to some embodiments of this utility model, such as Figures 1-4 As shown, the powertrain also includes a first gear 15 and a second gear 16. The first gear 15 is connected to the front axle output shaft 13, so that the rotational motion of the first gear 15 is synchronized with the rotational motion of the front axle output shaft 13. When power is transmitted to the first gear 15, the first gear 15 will drive the front axle output shaft 13 to rotate together. The second gear 16 is connected to the first sun gear 121 and is driven by the first gear 15. When the second gear 16 rotates, it will drive the first gear 15 to rotate. Through the transmission relationship between the first gear 15 and the second gear 16, power is transmitted from the second gear 16 to the first gear 15, and then to the front axle output shaft 13, completing the power transmission link between the planetary gear set 12 and the front axle output shaft 13. Since the first sun gear 121 is part of the planetary gear set 12, its motion is affected by the overall motion law of the planetary gear set 12, while the motion of the second gear 16 is related to the motion of the first sun gear 121.

[0052] Power is transmitted to the planetary gear assembly 12 via the power input shaft 111. Within the planetary gear assembly 12, power is distributed according to the connection relationships and motion characteristics of its internal components (first sun gear 121, first planet carrier 122, and first ring gear 123). A portion of the power is transmitted through the first sun gear 121. Since the second gear 16 is connected to the first sun gear 121, this power drives the second gear 16 to rotate. Because the second gear 16 is connected to the first gear 15, the rotation of the second gear 16 drives the first gear 15 to rotate. The first gear 15 is connected to the front axle output shaft 13, so the power is ultimately transmitted to the front axle output shaft 13, driving the front wheels to rotate.

[0053] According to some embodiments of this utility model, the second gear 16 is coaxially arranged with the first sun gear 121, and the second gear 16 and the first sun gear 121 are respectively sleeved on the outer periphery of the power input shaft 111. The coaxial arrangement of the second gear 16 and the first sun gear 121 ensures that their rotational axes coincide, guaranteeing that the second gear 16 and the first sun gear 121 can rotate at the same angular velocity during power transmission, thereby ensuring the stability and coordination of power transmission. The coaxial layout helps reduce the overall size of the powertrain and improves the compactness of the structure. Within the limited space of a vehicle, the compact layout facilitates the installation and arrangement of the powertrain, providing more space for the arrangement of other vehicle components.

[0054] The second gear 16 is sleeved on the outer periphery of the power input shaft 111, but is not directly fixedly connected to the power input shaft 111. When the power input shaft 111 rotates, it drives the planetary gear assembly 12 as a whole to move through the first planetary carrier 122, thereby indirectly affecting the movement of the second gear 16. The first sun gear 121 is also sleeved on the outer periphery of the power input shaft 111. The power output from the power input shaft 111 is transmitted to the first sun gear 121 through the first planetary carrier 122, causing it to rotate. The rotation of the first sun gear 121 then drives the planetary gears meshing with it to move, thereby realizing the power distribution within the planetary gear assembly 12.

[0055] By coaxially arranging the second gear 16 and the first sun gear 121, and with the second gear 16 and the first sun gear 121 respectively sleeved on the outer periphery of the power input shaft 111, the structure is compact, effectively saving the volume occupied by the powertrain in the limited space of the vehicle and improving the overall space utilization of the vehicle.

[0056] According to some embodiments of this utility model, such as Figure 1 , Figure 3 and Figure 4As shown, the powertrain also includes a drive chain 17, which meshes with a first gear 15 and a second gear 16. The drive chain 17 transmits power obtained from the first sun gear 121 by the second gear 16 to the first gear 15, and then the first gear 15 transmits the power to the front axle output shaft 13, driving the front wheels to rotate. This design offers advantages such as smooth transmission, high transmission efficiency, and reliable operation. The drive chain 17 possesses a certain degree of flexibility, allowing it to bend and deform to some extent, adapting to the complex spatial layout of the vehicle's interior. Even if the relative position between the first gear 15 and the second gear 16 is limited or requires bypassing other components, the drive chain 17 can still smoothly achieve power transmission between them, improving the flexibility of the powertrain design.

[0057] According to some embodiments of this utility model, such as Figure 2 As shown, the powertrain also includes a multi-gear 18, which has a first gear 15 and a second gear 16. The first gear 15 meshes with the first gear 15 for transmission, and the second gear 16 meshes with the second gear 16 for transmission.

[0058] The multi-gear 18 meshes with the second gear 16 via the second gear 16 part, receiving power from the second gear 16; simultaneously, it meshes with the first gear 15 via the first gear 15 part, transmitting power to the first gear 15, thus realizing the power transmission between the first gear 15 and the second gear 16. The second gear 16, by meshing with the second gear 16 part of the multi-gear 18, further transmits the power from the first sun gear 121 to the multi-gear 18, which then transmits the power back to the first gear 15, completing the power transmission. The multi-gear 18 integrates the first gear 15 part and the second gear 16 part, reducing the number of components in the power transmission path, making the powertrain structure more compact, facilitating installation and layout within the limited space of a vehicle, and improving space utilization. Compared to the installation and adjustment of multiple independent gears, the installation of the multi-gear 18 is simpler, reducing assembly difficulty and time costs.

[0059] According to some embodiments of this utility model, at least two of the first sun gear 121, the first planetary carrier 122, and the first ring gear 123 can be selectively engaged or disengaged from each other. By controlling the engagement or disengagement of at least two of the first sun gear 121, the first planetary carrier 122, and the first ring gear 123, the power transmission characteristics of the planetary gear set 12 can be changed, thereby affecting the power distribution between the front and rear axles. The powertrain can integrate the power transmission paths of the front and rear axles, allowing the front and rear axles to receive and transmit power as a whole. By locking the front and rear axles, the overall driving force of the vehicle is improved. Because the wheels with traction can obtain more power, they generate greater traction, enabling the vehicle to better overcome the resistance under slipping conditions, such as the friction of muddy or icy roads, thus improving the vehicle's passability and power performance.

[0060] According to some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the powertrain also includes a first locking part 191, which has a first engagement part and a second engagement part that can be selectively engaged or disengaged. The first engagement part is connected to the first sun gear 121, and the second engagement part is connected to the power input shaft 111. Under normal operating conditions, the first engagement part and the second engagement part are in the disengaged state. At this time, power is distributed from the power input shaft 111 through the planetary gear assembly 12 and transmitted to the front axle output shaft 13 and the rear axle output shaft 14 respectively, realizing four-wheel drive. When adjusting the power distribution under specific operating conditions, the first locking part 191 can be controlled to engage the first engagement part and the second engagement part. When the first engagement part and the second engagement part are engaged, the first sun gear 121 is directly connected to the power input shaft 111, which is equivalent to locking the first sun gear 121 onto the power input shaft 111. This can change the power transmission characteristics of the planetary gear assembly 12, causing the components inside the planetary gear assembly 12 to lose their ability to move relative to each other and rotate as a whole, thereby affecting the power distribution between the front axle and the rear axle. By locking the first sun gear 121 and the power input shaft 111, the vehicle can increase its overall driving force under specific conditions (such as muddy roads, icy roads, etc.). After locking, the wheels with traction can obtain more power, thereby generating greater traction, helping the vehicle to better overcome the resistance under slipping conditions, and improving the vehicle's passability and power performance.

[0061] According to some embodiments of this utility model, such as Figure 4As shown, the powertrain also includes a second locking part 192, which is disposed between the first ring gear 123 and the first sun gear 121. The second locking part 192 is used to selectively lock the first ring gear 123 and the first sun gear 121 together. Under normal operating conditions, the second locking part 192 is in the open state, allowing the first ring gear 123 and the first sun gear 121 to move relatively independently. The planetary gear set 12 distributes power according to its internal structure and motion characteristics. The second locking part 192 can be controlled to lock the first ring gear 123 and the first sun gear 121 together. When the first ring gear 123 and the first sun gear 121 are locked together by the second locking part 192, the planetary gear set 12 moves as a whole, changing its power transmission characteristics and thus affecting the power distribution between the front and rear axles. By adding a second locking part 192 and achieving optional locking connection between the first gear ring 123 and the first sun gear 121, in conjunction with the first locking part 191, the front axle and the rear axle can be locked more reliably, enhancing the vehicle's power transmission stability and driving performance under complex working conditions, and further improving the power performance under four-wheel drive slippage conditions.

[0062] According to some embodiments of this utility model, such as Figure 5 As shown, the powertrain includes a power unit 112 and a first transmission device 113. The power unit 112 is used to generate power, while the first transmission device 113 is adapted to selectively adjust the power output of the power unit 112, thereby changing the speed and torque of the power output by the power unit 112 to meet the power requirements of different working conditions.

[0063] The powertrain includes a second sun gear 1131, a second planetary carrier 1132, and a second ring gear 1133 that cooperate with each other. At least one of the second sun gear 1131, the second planetary carrier 1132, and the second ring gear 1133 is connected to the output end of the power unit 112. At least another of the second sun gear 1131, the second planetary carrier 1132, and the second ring gear 1133 forms the output end of the first transmission device 113. By setting a planetary gear set composed of the second sun gear 1131, the second planetary carrier 1132, and the second ring gear 1133, the first transmission device 113 has a compact structure and high transmission efficiency. The first transmission device 113 can regulate and output the power output by the power unit 112, or it can output the power directly without regulating the power output by the power unit 112, thus ensuring both low-speed, high-torque climbing ability and high transmission efficiency during high-speed cruising.

[0064] The powertrain also includes a multi-speed transmission 114, a second transmission 115, and a power input shaft 111. The input end of the multi-speed transmission 114 is connected to the output end of the first transmission 113, and the multi-speed transmission 114 is adapted to adjust the transmission ratio. The input end of the second transmission 115 can be selectively connected to the output end of the multi-speed transmission 114, and the second transmission 115 is adapted to adjust the power output by the multi-speed transmission 114. The input end of the power input shaft 111 is connected to the output end of the second transmission 115, thereby forming a multi-level adjustable power transmission path.

[0065] By setting up a multi-speed transmission 114, multiple gear ratios can be selected, further optimizing the power output characteristics at different vehicle speeds. By setting up a second transmission 115, the power output of the multi-speed transmission 114 can be further adjusted, making it particularly suitable for operating conditions requiring higher torque output. The power input shaft 111 can be connected to the multi-speed transmission 114 to directly output the power from the multi-speed transmission 114, or it can output the power adjusted by the second transmission 115. The output end of the multi-speed transmission 114 can be connected to either the input end of the power input shaft 111 or the input end of the second transmission 115, ensuring both low-speed, high-torque driving capability and maintaining transmission efficiency at high speeds.

[0066] Therefore, the powertrain according to the present invention has a wide speed ratio adjustment range and higher transmission efficiency, while also having a compact layout.

[0067] The vehicle according to this utility model is briefly described below.

[0068] The vehicle according to this utility model includes the powertrain of any of the above embodiments. Since the vehicle according to this utility model includes the powertrain of any of the above embodiments, it has a compact structure, flexible power distribution, strong adaptability, and a four-wheel drive system that is easy to integrate into the vehicle.

[0069] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0070] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A powertrain for a vehicle, characterized in that, include: Power input shaft (111); Planetary gear assembly (12), the planetary gear assembly (12) includes a first sun gear (121), a first planet carrier (122) and a first ring gear (123) that cooperate with each other, one of the first sun gear (121), the first planet carrier (122) and the first ring gear (123) being connected to the power input shaft (111); The front axle output shaft (13) is drive-connected to another of the first sun gear (121), the first planet carrier (122), and the first ring gear (123); The rear axle output shaft (14) is drive-connected to one of the first sun gear (121), the first planet carrier (122), and the first ring gear (123).

2. The powertrain according to claim 1, characterized in that, The first planetary carrier (122) is connected to the power input shaft (111), the front axle output shaft (13) is driven to the first sun gear (121), and the rear axle output shaft (14) is driven to the first gear ring (123).

3. The powertrain according to claim 2, characterized in that, Also includes: The first gear (15) is connected to the front axle output shaft (13); The second gear (16) is connected to the first sun gear (121) and is drive-connected to the first gear (15).

4. The powertrain according to claim 3, characterized in that, The second gear (16) is coaxially arranged with the first sun gear (121), and the second gear (16) and the first sun gear (121) are respectively sleeved on the outer periphery of the power input shaft (111).

5. The powertrain according to claim 3, characterized in that, Also includes: A transmission chain (17) meshes with the first gear (15) and the second gear (16) respectively; Alternatively, a multi-gear (18) having a first gear (15) portion and a second gear (16) portion, wherein the first gear (15) portion meshes with the first gear (15) portion for transmission, and the second gear (16) portion meshes with the second gear (16) portion for transmission.

6. The powertrain according to claim 1, characterized in that, At least two of the first sun gear (121), the first planet carrier (122), and the first gear ring (123) may be selectively engaged or disengaged from each other.

7. The powertrain according to claim 6, characterized in that, Also includes: The first locking part (191) is provided with a first engagement part and a second engagement part that can be selectively engaged or disengaged. The first engagement part is connected to the first sun gear (121), and the second engagement part is connected to the power input shaft (111).

8. The powertrain according to claim 6, characterized in that, Also includes: The second locking part (192) is disposed between the first gear ring (123) and the first sun gear (121), and the second locking part (192) is used to selectively lock the first gear ring (123) and the first sun gear (121) in a locked connection.

9. The powertrain according to claim 1, characterized in that, Also includes: Power unit (112); A first transmission device (113) includes a second sun gear (1131), a second planet carrier (1132), and a second ring gear (1133) that cooperate with each other. At least one of the second sun gear (1131), the second planet carrier (1132), and the second ring gear (1133) is connected to the output end of the power device (112). At least another of the second sun gear (1131), the second planet carrier (1132), and the second ring gear (1133) forms the output end of the first transmission device (113). The first transmission device (113) is adapted to selectively adjust the power output by the power device (112). A multi-speed transmission device (114) is provided, wherein the input end of the multi-speed transmission device (114) is connected to the output end of the first transmission device (113), and the multi-speed transmission device (114) is adapted to adjust the transmission ratio. The second transmission device (115) has its input end selectively connected to the output end of the multi-speed transmission device (114), and the second transmission device (115) is adapted to adjust the power output by the multi-speed transmission device (114). The input end of the power input shaft (111) is connected to the output end of the second transmission device (115).

10. A vehicle, characterized in that, Includes the powertrain described in any one of claims 1-9.

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