Power drive system and vehicle

Abstract

The utility model discloses an embodiment proposes a kind of power drive system and vehicle, it is related to vehicle manufacturing technical field, comprising: engine and generator;Planetary gear mechanism, the engine is connected with the generator power by the planetary gear mechanism, to be used to drive the generator selectively generates electricity, and the engine selectively passes through the planetary gear mechanism and differential power connection;Driving motor, the driving motor is selectively connected with the differential power.This embodiment of the utility model power drive system, by driving motor and differential selectively connected with power, so that when engine is connected with differential power by planetary gear mechanism, driving motor and differential can be disconnected, and then drag loss to driving motor can be avoided, to reduce the overall fuel consumption of vehicle, improve the economy of whole vehicle, and vehicle endurance can be prolonged, improve user experience, use effect is better, and more widely applicable.

Description

Technical Field

[0001] This utility model relates to the field of vehicle manufacturing technology, and in particular to a power drive system and a vehicle having the power drive system. Background Technology

[0002] With the development of the national economy and the continuous improvement of living standards, vehicles are becoming increasingly important in daily life and travel. The production cost and energy consumption during use are factors that need to be considered during vehicle production. In existing hybrid vehicles, when the engine is engaged in high-speed direct drive, the drive motor experiences drag losses, thus increasing the overall fuel consumption of the vehicle, indicating room for improvement. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a power drive system that can reduce the drag loss of the drive motor, thereby reducing the overall fuel consumption of the vehicle, improving the vehicle's economy, extending the vehicle's range, and improving the user experience.

[0004] The power drive system according to an embodiment of the present invention includes: an engine and a generator; a planetary gear mechanism, wherein the engine is poweredly connected to the generator through the planetary gear mechanism for driving the generator to selectively generate electricity, and the engine is selectively poweredly connected to a differential through the planetary gear mechanism; and a drive motor, wherein the drive motor is selectively poweredly connected to the differential.

[0005] According to the power drive system of this utility model embodiment, by selectively connecting the drive motor and the differential, the drive motor can be disconnected from the differential when the engine is connected to the differential through the planetary gear mechanism. This avoids drag loss on the drive motor, thereby reducing the overall fuel consumption of the vehicle, improving the economy of the vehicle, extending the vehicle's range, improving the user experience, and providing better performance and wider applicability.

[0006] According to some embodiments of the present invention, the power drive system includes a planetary gear mechanism comprising a planet carrier, planet gears, a sun gear, and a ring gear. The planet gears are rotatably connected to the planet carrier and mesh with the sun gear. The output shaft of the engine is fixedly connected to the planet carrier. The ring gear and the planet carrier are selectively locked relative to each other. The ring gear is poweredly connected to the differential. The generator is poweredly connected to the sun gear.

[0007] According to some embodiments of the present invention, in a power drive system, the engine and the gear ring are selectively connected via a first synchronizer;

[0008] And / or, the drive motor and the differential are selectively poweredly connected via a second synchronizer.

[0009] The power drive system according to some embodiments of the present invention further includes: a hub, the hub being poweredly connected to the first synchronizer and the second synchronizer respectively, and used to control the first synchronizer and the second synchronizer to open or close respectively.

[0010] According to some embodiments of the present invention, in the power drive system, the motor shaft of the generator is connected to the end of the sun gear away from the planetary carrier, and the output end of the engine is connected to the end of the planetary carrier away from the generator.

[0011] According to some embodiments of the present invention, the power drive system includes a first sun gear and a second sun gear coaxially arranged, the generator shaft is provided with a motor input gear, the first sun gear meshes with the planetary gears for transmission, and the second sun gear meshes with the motor input gear for transmission.

[0012] The power drive system according to some embodiments of the present invention further includes a transmission assembly, wherein the planetary gear mechanism and the drive motor are respectively poweredly connected to the differential through the transmission assembly.

[0013] According to some embodiments of the present invention, the power drive system of the transmission component is constructed as a common transmission component, and the common transmission component includes a first common gear and a second common gear arranged coaxially. The planetary gear mechanism and the drive motor are respectively poweredly connected to the first common gear, and the second common gear is poweredly connected to the differential.

[0014] According to some embodiments of the present invention, the power drive system includes a transmission assembly comprising a first transmission assembly and a second transmission assembly; wherein, the first transmission assembly includes a first input gear and a first output gear coaxially arranged, the planetary gear mechanism is poweredly connected to the first input gear, and the first output gear is poweredly connected to the differential;

[0015] And / or, the second transmission assembly includes a second input gear and a second output gear arranged coaxially, the drive motor is poweredly connected to the second input gear, and the second output gear is poweredly connected to the differential.

[0016] This utility model also proposes a vehicle.

[0017] The vehicle according to the embodiments of the present invention is equipped with the power drive system described in any of the above claims.

[0018] The vehicle and the aforementioned power drive system have the same advantages over existing technologies, which will not be repeated here.

[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 in closing with the following drawings, wherein:

[0021] Figure 1 This is a schematic diagram of the power drive system according to an embodiment of the present utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the power drive system according to an embodiment of the present utility model. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the power drive system according to an embodiment of the present utility model. Figure 3 ;

[0024] Figure 4 This is a schematic diagram of the power drive system according to an embodiment of the present utility model. Figure 4 ;

[0025] Figure 5 This is a schematic diagram of the operating state of the first synchronizer and the second synchronizer according to an embodiment of the present utility model.

[0026] Figure label:

[0027] Power drive system 100,

[0028] Engine 1, generator 2, motor input gear 21, drive motor 3, drive gear 31, differential 4, differential gear 41.

[0029] Planetary gear mechanism 5, planet carrier 51, planet gears 52, sun gear 53, first sun gear 531, second sun gear 532, ring gear 54.

[0030] First synchronizer 6, second synchronizer 7

[0031] Transmission assembly 8, first common gear 81, second common gear 82, first transmission assembly 83, first input gear 831, first output gear 832, second transmission assembly 84, second input gear 841, second output gear 842. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0036] The following is for reference. Figures 1-5 The power drive system 100 according to the present invention can reduce the drag loss of the drive motor 3, thereby reducing the overall fuel consumption of the vehicle, improving the economy of the vehicle, extending the vehicle's range, and improving the user experience.

[0037] like Figures 1-5 As shown, a power drive system 100 according to an embodiment of the present invention includes: an engine 1, a generator 2, a planetary gear mechanism 5, and a drive motor 3.

[0038] Engine 1 is powered by generator 2 via planetary gear mechanism 5 to drive generator 2 to generate electricity selectively. Engine 1 is also selectively powered by differential 4 via planetary gear mechanism 5, and drive motor 3 is selectively powered by differential 4.

[0039] Specifically, the vehicle may be equipped with a power drive system 100, which can provide driving force to the vehicle. The power drive system 100 is equipped with an engine 1 and a generator 2. The engine 1 can convert the chemical energy of the fuel, such as gasoline or diesel, into mechanical energy by burning fuel, thereby driving the vehicle. The engine 1 can be connected to the generator 2. When the engine 1 is running, it can also transmit power to the generator 2, thereby enabling the generator 2 to operate and generate electricity. The electrical energy generated by the generator 2 can be stored in the battery pack installed in the vehicle to supply power to the whole vehicle and ensure the reliability of vehicle operation.

[0040] Furthermore, the engine 1 and the generator 2 are poweredly connected through the planetary gear mechanism 5. That is, when the engine 1 is running, it can drive the planetary gear mechanism 5 to run, and then transmit power to the generator 2 through the planetary gear mechanism 5. The engine 1 can also selectively be poweredly connected to the differential 4 through the planetary gear mechanism 5. The differential 4 is connected to the wheels, so that the engine 1 can drive the wheels to rotate through the differential 4, thereby driving the vehicle to run.

[0041] In this way, the planetary gear mechanism 5 can split the output power of the engine 1, so that the power of the engine 1 can be transmitted to the generator 2 or the differential 4 through the planetary gear mechanism 5, thereby improving the integration and improving the vehicle's lightweight design. In addition, the planetary gear mechanism 5 can also adjust the speed of the output power of the engine 1 to ensure the operational reliability of the generator 2 and the differential 4.

[0042] Furthermore, the power drive system 100 is also equipped with a drive motor 3. The vehicle's battery pack can be electrically connected to the drive motor 3 and can supply power to the drive motor 3 to make the drive motor 3 run. The drive motor 3 is selectively connected to the differential 4. That is, when the drive motor 3 is connected to the differential 4, the battery pack can supply power to the drive motor 3, so that the drive motor 3 can drive the differential 4 to run and drive the vehicle. At this time, the vehicle is in pure electric drive, which can improve environmental protection and energy saving.

[0043] In addition, both engine 1 and drive motor 3 can be selectively connected to differential 4. Engine 1 can be connected to differential 4 while drive motor 3 is disconnected, allowing engine 1 to directly drive the vehicle. This ensures vehicle power and avoids dragging losses on drive motor 3, reducing overall fuel consumption, improving vehicle economy, extending range, and enhancing user experience. Alternatively, engine 1 can be disconnected from differential 4 while drive motor 3 is connected, allowing drive motor 3 to directly drive the vehicle, improving energy efficiency and environmental friendliness. In this case, engine 1 is off.

[0044] Furthermore, both engine 1 and drive motor 3 can be connected to the differential 4, allowing engine 1 and drive motor 3 to drive the vehicle simultaneously. When generator 2 is off, engine 1 and drive motor 3 work together through the gearbox to distribute power between them, ensuring vehicle reliability and reducing fuel consumption. When generator 2 is on, a portion of the power from engine 1 is transmitted to generator 2 via planetary gear mechanism 5 to drive generator 2 to generate electricity, while the other portion of the power from engine 1 is transmitted to differential 4 via planetary gear mechanism 5 to drive the vehicle. This distribution of power from engine 1 via planetary gear mechanism 5 improves the smoothness of power transmission and enhances the user experience.

[0045] According to the power drive system 100 of this utility model embodiment, by selectively connecting the drive motor 3 and the differential 4, when the engine 1 is connected to the differential 4 through the planetary gear mechanism 5, the drive motor 3 can be disconnected from the differential 4, thereby avoiding drag loss on the drive motor 3, reducing the overall fuel consumption of the vehicle, improving the economy of the vehicle, extending the vehicle's range, improving the user experience, and having a better performance and wider applicability.

[0046] In some embodiments, the planetary gear mechanism 5 includes a planet carrier 51, planet gears 52, a sun gear 53, and a ring gear 54. The planet gears 52 are rotatably connected to the planet carrier 51 and mesh with the sun gear 53. The output shaft of the engine 1 is fixedly connected to the planet carrier 51. The ring gear 54 and the planet carrier 51 are selectively locked relative to each other. The ring gear 54 is powered by the differential 4. The generator 2 is powered by the sun gear 53.

[0047] Specifically, such as Figures 1-4As shown, the output end of the engine 1 is equipped with a planetary gear mechanism 5, which includes a planet carrier 51, planetary gears 52, a sun gear 53, and a ring gear 54. The output shaft of the engine 1 is fixedly connected to the planet carrier 51. When the engine 1 is running, the output shaft of the engine 1 rotates, thereby driving the planet carrier 51 to rotate. The planetary gears 52 are rotatably connected to the planet carrier 51. When the planet carrier 51 rotates, it can drive the planetary gears 52 to revolve around the sun, and the planetary gears 52 can rotate relative to the planet carrier 51. The ring gear 54 is sleeved on the outside of the planetary gears 52. The planetary gears 52 mesh with the sun gear 53 for transmission, and the sun gear 53 is powered by the generator 2. This allows the planetary gears 52 to rotate, driving the sun gear 53 to rotate, thereby transmitting power to the generator 2 to drive the generator 2 to generate electricity, improving the environmental protection and energy efficiency of the vehicle during operation.

[0048] Furthermore, the ring gear 54 and the planet carrier 51 are selectively locked relative to each other, that is, the ring gear 54 and the planet carrier 51 can be locked so that when the planet carrier 51 rotates, it can drive the ring gear 54 to rotate. The ring gear 54 is poweredly connected to the differential 4. When the ring gear 54 rotates, it can transmit power to the differential 4, thereby driving the wheels to rotate. At this time, the planet carrier 51 can also drive the planet gears 52 to revolve, thereby driving the sun gear 53 to rotate, so that part of the kinetic energy of the engine 1 can also be transmitted to the generator 2, thereby enabling the planetary gear mechanism 5 to distribute the power of the engine 1 and ensure the smoothness of power transmission.

[0049] In addition, if it is necessary to recharge the vehicle's battery pack, the generator 2 can be turned on, and the power output from the engine 1 can drive the generator 2 to generate electricity. If it is not necessary to recharge the vehicle's battery pack, the generator 2 can be turned off, that is, the generator 2 does not generate electricity, making it flexible in use.

[0050] In some embodiments, the engine 1 and the gear ring 54 are selectively powered via a first synchronizer 6.

[0051] Specifically, such as Figures 1-4 As shown, a first synchronizer 6 is provided between the engine 1 and the ring gear 54. The engine 1 and the ring gear 54 can be selectively connected by power through the first synchronizer 6. That is, when the first synchronizer 6 is open, the ring gear 54 and the planet carrier 51 are relatively separated, thereby blocking the transmission of power from the engine 1 to the ring gear 54. When the first synchronizer 6 is closed, the ring gear 54 and the planet carrier 51 can be relatively locked, so that when the planet carrier 51 rotates, it can drive the ring gear 54 to rotate. Thus, the engine 1 can transmit power to the differential 4 through the planetary gear mechanism 5. The structure is simple, the direction of power transmission can be adjusted, and the flexibility of use is improved.

[0052] In other embodiments, the drive motor 3 and the differential 4 are selectively poweredly connected via a second synchronizer 7.

[0053] Specifically, such as Figures 1-4 As shown, a second synchronizer 7 is provided between the drive motor 3 and the differential 4. The drive motor 3 and the differential 4 can be selectively connected by the second synchronizer. That is, when the second synchronizer 7 is open, it can block the drive motor 3 from sending power to the differential 4, and when the second synchronizer 7 is closed, the drive motor 3 can send power to the differential 4, thereby driving the vehicle. The structure is simple and can improve the flexibility of the use of the drive motor 3.

[0054] Furthermore, when the engine 1 is in direct drive mode, the drive motor 3 and the differential 4 can be disconnected through the second synchronizer 7, thereby avoiding drag loss of the drive motor 3, improving vehicle fuel economy, extending vehicle range, and ensuring user experience.

[0055] In some embodiments, the power drive system 100 further includes a hub, which is poweredly connected to the first synchronizer 6 and the second synchronizer 7 respectively, and is used to control the first synchronizer 6 and the second synchronizer 7 to open or close respectively.

[0056] Specifically, the power drive system 100 is also provided with a hub, which is located inside the gearbox. The hub can be poweredly connected to the first synchronizer 6 and the second synchronizer 7 respectively, and the hub can control the opening or closing of the first synchronizer 6 and the second synchronizer 7 respectively.

[0057] In actual settings, such as Figure 5 As shown, when the vehicle is traveling at low speed, it can be driven by pure electric power. At this time, the hub can disconnect the first synchronizer 6 and close the second synchronizer 7, thereby enabling the drive motor 3 to transmit power to the differential 4.

[0058] When the vehicle is traveling at medium to high speeds, the wheel hub can open the first synchronizer 6 and close the second synchronizer 7. At this time, the engine 1 transmits power to the differential 4 through the planetary gear mechanism 5. Simultaneously, the engine 1 can also transmit power to the generator 2 through the planetary gear mechanism 5, enabling the generator 2 to generate electricity. The drive motor 3 can also transmit power to the differential 4. Thus, the planetary gear mechanism 5 can optimize the coordination efficiency of the engine 1, generator 2, and drive motor 3. If overtaking is required at medium to high speeds, the wheel hub can close both the first synchronizer 6 and the second synchronizer 7, allowing for flexible power distribution among the engine 1, generator 2, and drive motor 3 as needed.

[0059] When the vehicle is running at high speed, the wheel hub can disconnect the second synchronizer 7 and close the first synchronizer 6. At this time, the engine 1 can transmit power to the differential 4 through the planetary gear mechanism 5, and the second synchronizer 7 can block the drive motor 3 from transmitting power to the differential 4, which can reduce the energy loss of the drive motor 3 and improve the vehicle's fuel economy.

[0060] In some embodiments, the motor shaft of the generator 2 is connected to the end of the sun gear 53 away from the planetary carrier 51, and the output end of the engine 1 is connected to the end of the planetary carrier 51 away from the generator 2.

[0061] Specifically, such as Figure 1 and Figure 4 As shown, the output end of engine 1 is connected to planetary carrier 51, and planetary carrier 51 can drive planetary gear 52 to rotate, thereby driving sun gear 53 to rotate. Sun gear 53 is connected to generator 2, thereby driving generator 2 to generate electricity. The motor shaft of generator 2 is connected to the end of sun gear 53 away from planetary carrier 51, and the output end of engine 1 is connected to the end of planetary carrier 51 away from generator 2. That is, generator 2 and engine 1 are respectively connected to both sides of planetary gear mechanism 5, thereby shortening the power transmission path, reducing power loss during transmission, improving the integration of power drive system 100, reducing the overall space occupied by power drive system 100, thereby optimizing the layout of vehicle space and improving vehicle lightweighting.

[0062] In some embodiments, the sun gear 53 includes a first sun gear 531 and a second sun gear 532 coaxially arranged, and the motor shaft of the generator 2 is provided with a motor input gear 21. The first sun gear 531 meshes with the planet gear 52 for transmission, and the second sun gear 532 meshes with the motor input gear 21 for transmission.

[0063] Specifically, such as Figures 2-3 As shown, the engine 1 can transmit power to the generator 2 through the sun gear 53, and the sun gear 53 is provided with a first sun gear 531 and a second sun gear 532. The first sun gear 531 and the second sun gear 532 are coaxially arranged, that is, when one of the first sun gear 531 and the second sun gear 532 rotates, it can drive the other to rotate together. The first sun gear 531 can mesh with the planet gear 52 for transmission, and the motor shaft of the generator 2 is provided with a motor input gear 21, which meshes with the second sun gear 532 for transmission.

[0064] Thus, when the engine 1 is running, it can drive the planetary carrier 51 to rotate, thereby driving the planetary gears 52 to rotate. The planetary gears 52 mesh with the first sun gear 531, thereby driving the first sun gear 531 to rotate. The first sun gear 531 and the second sun gear 532 are coaxially arranged, so that the second sun gear 532 can rotate together. The second sun gear 532 can drive the motor input gear 21 to rotate, thereby driving the generator 2 to generate electricity. In this way, the transmission ratio can be adjusted by adjusting the number of teeth of the first sun gear 531 and the second sun gear 532 to meet the usage requirements of different vehicle models and improve the flexibility of use.

[0065] In some embodiments, the power drive system 100 further includes a transmission assembly 8, and the planetary gear mechanism 5 and the drive motor 3 are respectively poweredly connected to the differential 4 through the transmission assembly 8.

[0066] Specifically, the power drive system 100 is also provided with a transmission assembly 8. The power of the engine 1 and the power of the drive motor 3 can be transmitted to the differential 4 through the transmission assembly 8. That is, the planetary gear mechanism 5 can be connected to the transmission assembly 8, so that when the engine 1 is running, it can transmit power to the planetary gear mechanism 5, and then to the transmission assembly 8 through the planetary gear mechanism 5, so that the power can be delivered to the differential 4 through the transmission assembly 8. The drive motor 3 can be directly connected to the transmission assembly 8, so that when the drive motor 3 is running, it can transmit power to the transmission assembly 8, and then to the differential 4 through the transmission assembly 8.

[0067] In this way, the transmission direction of the power output by the engine 1 and the drive motor 3 can be adjusted through the transmission component 8 to improve the rationality of the layout of the power drive system 100, thereby improving the utilization rate of the vehicle's interior space and ensuring vehicle lightweighting.

[0068] In some embodiments, the transmission assembly 8 is configured as a common transmission assembly 8, and the common transmission assembly 8 includes a first common gear 81 and a second common gear 82 arranged coaxially. The planetary gear mechanism 5 and the drive motor 3 are respectively powered to the first common gear 81, and the second common gear 82 is powered to the differential 4.

[0069] Specifically, such as Figures 1-2 As shown, the transmission assembly 8 is constructed as a shared transmission assembly. There is only one shared transmission assembly. Both the engine 1 and the drive motor 3 can transmit power to the differential 4 through one shared transmission assembly. The shared transmission assembly is provided with a first shared gear 81 and a second shared gear 82. The first shared gear 81 and the second shared gear 82 are coaxially arranged. That is, when one of the first shared gear 81 and the second shared gear 82 rotates, it can drive the other to rotate together. The planetary gear mechanism 5 and the drive motor 3 can be connected to the first shared gear 81 for power. This can reduce the number of transmission assemblies 8, reduce the installation cost, reduce the space occupied, and improve the weight reduction.

[0070] In addition, the ring gear 54 of the planetary gear mechanism 5 can mesh with one side of the first common gear 81 for transmission. The drive motor 3 is equipped with a drive gear 31, which meshes with the other side of the first common gear 81 for transmission. This can avoid interference between the planetary gear mechanism 5 and the drive gear 31 and ensure operational reliability.

[0071] Furthermore, the second common gear 82 is poweredly connected to the differential 4. Specifically, when the engine 1 is running and the first synchronizer 6 is closed, the engine 1 drives the planetary carrier 51 to rotate, which in turn drives the ring gear 54 to rotate, causing the first common gear 81 to rotate. At this time, the first common gear 81 drives the second common gear 82 to rotate, thus transmitting power to the differential 4 through the differential gear 41. Similarly, when the drive motor 3 is running and the second synchronizer 7 is closed, the drive motor 3 drives the drive gear 31 to rotate, which in turn drives the first common gear 81 to rotate. At this time, the first common gear 81 drives the second common gear 82 to rotate, thus transmitting power to the differential 4 through the differential gear 41. In this way, the transmission ratio can be adjusted by changing the number of teeth on the first common gear 81 and the second common gear 82, meeting the usage requirements of different vehicle models and improving operational flexibility.

[0072] In some embodiments, such as Figures 3-4 As shown, the transmission assembly 8 includes a first transmission assembly 83 and a second transmission assembly 84. The engine 1 is powered by the first transmission assembly 83 via the planetary gear mechanism 5, and the first transmission assembly 83 is powered by the differential 4. Thus, the engine 1 can transmit power to the differential 4 via the first transmission assembly 83. The drive motor 3 is powered by the second transmission assembly 84 via the drive gear 31, and the second transmission assembly 84 is powered by the differential 4. Thus, the drive motor 3 can transmit power to the differential 4 via the second transmission assembly 84. That is, the engine 1 and the drive motor 3 each have a separate power transmission path, and the first transmission assembly 83 and the second transmission assembly 84 are respectively located on both sides of the differential 4, which can avoid interference between the engine 1 and the drive motor 3, thereby ensuring the operational reliability of the engine 1 and the drive motor 3.

[0073] The first transmission component 83 includes a first input gear 831 and a first output gear 832 arranged coaxially. The planetary gear mechanism 5 is poweredly connected to the first input gear 831, and the first output gear 832 is poweredly connected to the differential 4.

[0074] Specifically, such as Figures 3-4 As shown, the first transmission assembly 83 is provided with a first input gear 831 and a first output gear 832. The first input gear 831 and the first output gear 832 are coaxially arranged, that is, when one of the first input gear 831 and the first output gear 832 rotates, the other can also rotate together. The ring gear 54 of the planetary gear mechanism 5 meshes with the first input gear 831 for transmission, and the first output gear 832 meshes with the differential gear 41 of the differential 4 for transmission.

[0075] Thus, when engine 1 is running and the first synchronizer 6 is closed, engine 1 can drive planetary carrier 51 to rotate, which in turn drives ring gear 54 to rotate. Ring gear 54 can drive first input gear 831 to rotate, which in turn causes first output gear 832 to rotate synchronously. First output gear 832 can drive differential gear 41 to rotate, so as to transmit power to differential 4. The transmission ratio can be adjusted by adjusting the number of teeth of first input gear 831 and first output gear 832 to meet the usage requirements of different vehicle models and improve the flexibility of use.

[0076] In other embodiments, the second transmission assembly 84 includes a second input gear 841 and a second output gear 842 arranged coaxially, the drive motor 3 is poweredly connected to the second input gear 841, and the second output gear 842 is poweredly connected to the differential 4.

[0077] Specifically, such as Figures 3-4 As shown, the second transmission assembly 84 is provided with a second input gear 841 and a second output gear 842. The second input gear 841 and the second output gear 842 are coaxially arranged, that is, when one of the second input gear 841 and the second output gear 842 rotates, the other can also rotate together. The drive gear 31 of the drive motor 3 meshes with the second input gear 841 for transmission, and the second output gear 842 meshes with the differential gear 41 of the differential 4 for transmission.

[0078] Thus, when the drive motor 3 is running and the second synchronizer 7 is closed, the drive motor 3 can drive the drive gear 31 to rotate, which in turn drives the second input gear 841 to rotate, causing the second output gear 842 to rotate synchronously. The second output gear 842 can drive the differential gear 41 to rotate, so as to transmit power to the differential 4. Furthermore, the transmission ratio can be adjusted by adjusting the number of teeth on the second input gear 841 and the second output gear 842 to meet the usage requirements of different vehicle models and improve the flexibility of use.

[0079] This utility model also proposes a vehicle.

[0080] The vehicle according to the present utility model embodiment is provided with any of the above-mentioned power drive system 100.

[0081] According to the vehicle of this utility model embodiment, by selectively connecting the drive motor 3 and the differential 4, when the engine 1 is connected to the differential 4 through the planetary gear mechanism 5, the drive motor 3 can be disconnected from the differential 4, thereby avoiding drag loss on the drive motor 3, reducing the overall fuel consumption of the vehicle, improving the economy of the vehicle, extending the vehicle's range, improving the user experience, and having a better performance and wider applicability.

[0082] 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 the specific feature, structure, material, or characteristic described in 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 can be closed in any suitable manner in one or more embodiments or examples.

[0083] 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 power drive system, characterized in that, include: Engine (1) and generator (2); Planetary gear mechanism (5), the engine (1) is powered to the generator (2) through the planetary gear mechanism (5) to drive the generator (2) to generate electricity selectively, and the engine (1) is powered to the differential (4) through the planetary gear mechanism (5); The drive motor (3) is selectively powered to the differential (4).

2. The power drive system according to claim 1, characterized in that, The planetary gear mechanism (5) includes a planet carrier (51), planet gears (52), a sun gear (53), and a ring gear (54). The planet gears (52) are rotatably connected to the planet carrier (51) and mesh with the sun gear (53). The output shaft of the engine (1) is fixedly connected to the planet carrier (51). The ring gear (54) and the planet carrier (51) are selectively locked relative to each other. The ring gear (54) is powered by the differential (4). The generator (2) is powered by the sun gear (53).

3. The power drive system according to claim 2, characterized in that, The engine (1) and the gear ring (54) are selectively connected by a first synchronizer (6); And / or, the drive motor (3) is selectively powered to the differential (4) via a second synchronizer (7).

4. The power drive system according to claim 3, characterized in that, Also includes: The hub is poweredly connected to the first synchronizer (6) and the second synchronizer (7) respectively, and is used to control the first synchronizer (6) and the second synchronizer (7) to open or close respectively.

5. The power drive system according to claim 2, characterized in that, The motor shaft of the generator (2) is connected to the end of the sun gear (53) away from the planetary carrier (51), and the output end of the engine (1) is connected to the end of the planetary carrier (51) away from the generator (2).

6. The power drive system according to claim 2, characterized in that, The sun gear (53) includes a first sun gear (531) and a second sun gear (532) arranged coaxially. The motor shaft of the generator (2) is provided with a motor input gear (21). The first sun gear (531) meshes with the planetary gear (52) for transmission, and the second sun gear (532) meshes with the motor input gear (21) for transmission.

7. The power drive system according to claim 1, characterized in that, It also includes a transmission assembly (8), wherein the planetary gear mechanism (5) and the drive motor (3) are poweredly connected to the differential (4) through the transmission assembly (8).

8. The power drive system according to claim 7, characterized in that, The transmission assembly (8) is configured as a common transmission assembly (8), and the common transmission assembly (8) includes a first common gear (81) and a second common gear (82) arranged coaxially. The planetary gear mechanism (5) and the drive motor (3) are respectively powered to the first common gear (81), and the second common gear (82) is powered to the differential (4).

9. The power drive system according to claim 7, characterized in that, The transmission assembly (8) includes a first transmission assembly (83) and a second transmission assembly (84). The first transmission assembly (83) includes a first input gear (831) and a first output gear (832) arranged coaxially. The planetary gear mechanism (5) is poweredly connected to the first input gear (831), and the first output gear (832) is poweredly connected to the differential (4). And / or, the second transmission assembly (84) includes a second input gear (841) and a second output gear (842) arranged coaxially, the drive motor (3) is poweredly connected to the second input gear (841), and the second output gear (842) is poweredly connected to the differential (4).

10. A vehicle, characterized in that, The system is equipped with a power drive system (100) as described in any one of claims 1-9.

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