Power assembly and vehicle

Abstract

The invention relates to a power assembly and a vehicle, the power assembly comprises a shell, an engine, a generator and a driving motor, the engine comprises a cylinder body and a crankshaft, the shell is connected to the cylinder body so as to define a mounting cavity together with the cylinder body, the generator and the driving motor are arranged in the mounting cavity, and the crankshaft extends into the mounting cavity and is connected with the generator; and the generator is arranged around the peripheral side of the driving motor. According to the technical scheme, the mounting cavity is defined by the cylinder body and the shell, the generator and the driving motor are integrated in the mounting cavity, through the nested layout, the internal space of the shell is fully utilized, the axial size of the power assembly is reduced, the layout compactness is improved, and the overall integration degree is remarkably improved; the crankshaft of the engine extends into the mounting cavity and is directly connected with the generator, so that the number of redundant structures and parts is reduced, the overall size and weight are further reduced, the occupied space of a front cabin of a vehicle is smaller, the arrangement difficulty is lowered, and the use reliability is higher.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle technology, and in particular, to a powertrain and a vehicle. Background Art

[0002] In the powertrain of an extended-range vehicle, the generator is connected to the engine crankshaft through structures such as a speed increaser and a torsional reducer.

[0003] In related technologies, the engine, generator and other components of the powertrain are arranged in a dispersed manner, resulting in a larger overall volume, which in turn makes the layout of the powertrain in the front cabin complex and difficult, and increases the overall weight of the vehicle. Summary of the Invention

[0004] The purpose of the present disclosure is to provide a powertrain and a vehicle, wherein the powertrain has a smaller overall volume and lighter weight, thereby reducing the space occupied by the front cabin of the vehicle, so as to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above objectives, the present disclosure provides, in a first aspect, a powertrain, comprising: case; The engine comprises a cylinder block and a crankshaft, wherein the housing is connected to the cylinder block to form a mounting cavity together with the cylinder block; and a generator disposed in the mounting cavity, wherein the crankshaft extends into the mounting cavity and is connected to the generator; and The drive motor is arranged in the installation cavity, and the generator is arranged around the outer circumference of the drive motor.

[0006] Through the above technical solution, the cylinder body and the shell form an installation cavity, the generator and the drive motor are integrated in the installation cavity, and the generator is arranged around the outer peripheral side of the drive motor. Through the "nested" layout, the internal space of the shell is fully utilized, the axial dimension of the powertrain is reduced, the layout compactness is improved, and the overall integration is significantly improved. The crankshaft extends into the installation cavity and is directly connected to the generator, reducing the number of redundant structures and components, thereby reducing the overall volume and weight.

[0007] Optionally, the drive motor includes a first rotor, which is rotatably connected to the crankshaft and the housing about its own axis and is arranged coaxially with the crankshaft. Through the above structural design, the first rotor can be mounted / supported by the crankshaft, thereby reducing the need for additional mounting / support structures such as end plates and housings, thereby simplifying the overall structure of the powertrain and improving overall integration. Optionally, the crankshaft includes a first connection portion connected to the first rotor and a second connection portion connected to the generator, with the second connection portion arranged around the first connection portion. By optimizing the crankshaft's structural design to enable it to simultaneously support the first rotor and the generator, the connection structure and number of parts between the crankshaft and the generator, and between the crankshaft and the first rotor are simplified, and assembly and disassembly are facilitated.

[0008] Optionally, the first connecting portion includes a mounting groove, and the first rotor includes a rotor shaft, which is rotatably inserted into the mounting groove. The mounting groove supports the rotor shaft, thereby improving the stability of the rotor shaft's rotation.

[0009] Optionally, the generator includes a second rotor and a support portion connected to the second rotor, the support portion being connected to the second connection portion, and the support portion having a clearance hole for the first rotor to pass through. With this structural design, the second rotor is directly connected to the crankshaft via the support portion, eliminating intermediate transmission components, reducing transmission losses, and thereby improving energy transfer efficiency. The provision of the clearance hole can provide installation space for the first rotor.

[0010] Optionally, the drive motor includes a first stator surrounding the outside of the first rotor, and the generator includes a second rotor and a second stator disposed inside the second rotor, with the second stator arranged outside the first stator. This "nested" structural design reduces the space occupied by the generator and drive motor, thereby fully utilizing space and improving the integration of the powertrain.

[0011] Optionally, the first stator and the second stator include the same stator core. By sharing the stator core, the functions of the first stator and the second stator can be integrated, the radial and axial dimensions of the stator structure can be greatly reduced, and the space occupied in the housing can be saved.

[0012] Optionally, the first stator includes a first stator winding, the second stator includes a second stator winding, and the stator core includes a plurality of silicon steel sheets stacked axially, with at least some of the silicon steel sheets forming first stator slots for mounting the first stator winding, and at least some of the silicon steel sheets forming second stator slots for mounting the second stator winding. This structural design can shorten and concentrate the magnetic field path, effectively reducing hysteresis loss and eddy current loss, thereby effectively improving energy conversion efficiency.

[0013] Optionally, the housing includes an outer shell connected to the engine and a partition located within the outer shell to separate the mounting cavity into a first mounting cavity and a second mounting cavity, the generator being mounted in the first mounting cavity and the drive motor being mounted in the second mounting cavity. The partition design partitions the mounting cavity, allowing the generator and drive motor to be spaced apart, facilitating targeted independent thermal management of the drive motor and generator.

[0014] Optionally, the first mounting cavity is arranged on a side of the second mounting cavity close to the engine, the first mounting cavity and the second mounting cavity are partially staggered and overlapped in the axial direction, and the outer diameter of the first mounting cavity is larger than the outer diameter of the second mounting cavity. In this way, the first mounting space is arranged adjacent to the engine to shorten the connection path between the engine crankshaft and the generator located in the first mounting space, effectively improving the torsional stiffness while reducing the phase lag during vibration transmission. The first mounting space and the second mounting space are partially staggered and overlapped in the axial direction to reduce the axial length of the powertrain, further improve the overall integration, and thus reduce the overall volume; the outer diameter of the first mounting space is larger than the outer diameter of the second mounting space. By rationally utilizing the spatial layout, while reducing the overall volume, sufficient installation space is provided for the remaining structures and components.

[0015] Optionally, the partition is disposed on a side proximal to the engine, and an end plate is disposed on a side of the housing facing away from the engine. The partition and the end plate collectively define the second mounting cavity. The drive motor includes a first rotor rotatably supported between the partition and the end plate. The partition and the end plate support the first rotor, ensuring stable operation of the drive motor. The partition and the end plate collectively define the second mounting cavity, making the overall structure more compact and effectively improving space utilization.

[0016] Optionally, the housing includes an annular cylinder radially located between the first mounting cavity and the second mounting cavity, the partition plate is connected to the inner side of the annular cylinder, and the partition plate, the annular cylinder, the outer shell, and the cylinder body collectively enclose the first mounting cavity. This structural design can further improve space utilization within the housing, fully utilize radial space, and thereby enhance overall integration.

[0017] Optionally, the generator includes a second stator disposed on the annular cylinder, a second rotor surrounding the second stator, and a support portion connected to the second rotor, wherein the support portion is connected to the crankshaft. This structural design can fully utilize the internal space of the housing, making the overall structure more compact and reducing the overall volume and weight.

[0018] Optionally, the axial length of the generator is smaller than the axial length of the drive motor, so as to optimize the overall layout, shorten the axial length of the powertrain, and reduce the overall volume.

[0019] Optionally, the powertrain further includes a motor controller, which is axially aligned with the generator and radially aligned with the drive motor. Optimizing the position of the motor controller shortens signal transmission distances and enhances control system response speed.

[0020] Optionally, the housing includes a first housing portion and a second housing portion connected axially, with the end of the first housing portion facing away from the second housing portion being connected to the engine, the generator being located inside the first housing portion, and the drive motor being located inside the first and second housing portions. The axial connection between the first and second housing portions facilitates assembly and disassembly, and the modular design facilitates production and subsequent maintenance.

[0021] Optionally, at least a portion of the outer peripheral wall of the second housing portion is recessed relative to the outer peripheral wall of the first housing portion to form a recessed portion, and the powertrain further includes a motor controller disposed in the recessed portion. The provision of the recessed portion fully utilizes the outer peripheral space of the housing, embedding the motor controller in the recessed portion, eliminating the need for additional installation space and achieving a higher degree of overall integration.

[0022] Optionally, a reduction mechanism is provided on a side of the housing facing away from the engine, and the drive motor is connected to an input end of the reduction mechanism. The drive motor transmits power through the reduction mechanism, can operate at a high speed, and achieves high torque output through deceleration, thereby improving drive efficiency.

[0023] Optionally, the powertrain includes a differential arranged radially parallel to the reduction mechanism, the differential being connected to the reduction mechanism. The direct connection between the differential and the reduction mechanism allows for efficient distribution of power to the wheels, improving the vehicle's driving performance and handling.

[0024] A second aspect of the present disclosure provides a vehicle comprising the above-mentioned power assembly and having all the beneficial effects of the above-mentioned power assembly.

[0025] Optionally, the vehicle further includes a transmission mechanism, axles, and wheels, wherein the drive motor is connected to the axles via the transmission mechanism, and the axles are connected to the wheels. The engine transmits power to the generator, and the drive motor converts the electrical energy generated by the generator into kinetic energy, which is then output to the axles and wheels in sequence via the transmission mechanism, thereby driving the vehicle, thereby achieving efficient power output.

[0026] Optionally, the axis of the crankshaft extends along the width direction of the vehicle to simplify the force transmission path and achieve stable and efficient power output; and / or, the drive motor, the generator and the engine are arranged coaxially to save space and shorten the power transmission path; and / or, the engine, the drive motor and the generator are located above the half-shaft, which can not only improve the structural compactness of the powertrain and achieve rational use of space, but also improve the convenience of after-sales service and maintenance.

[0027] Through the above technical solution, that is, the housing is connected to the cylinder block of the engine and together they form an installation cavity, the generator and the drive motor are integrated in the installation cavity, and the generator is arranged around the outer circumference of the drive motor. Through the "nested" layout, the internal space of the housing is fully utilized, the axial dimension of the powertrain is reduced, the compactness of the layout is improved, and the overall integration is significantly improved. The crankshaft of the engine extends into the installation cavity and is directly connected to the generator, reducing the number of redundant structures and parts, thereby reducing the overall volume and weight, making the space occupied by the front cabin of the vehicle less, reducing the difficulty of layout, and reducing transmission loss and improving energy conversion efficiency. In addition, the support of the housing by the cylinder block enhances the structural rigidity and stability of the powertrain, thereby improving its durability and reliability. Therefore, the powertrain provided by the present disclosure is more reliable and stable in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0029] Figure 1 The overall structure of the powertrain provided in the exemplary embodiment of the present disclosure is schematically shown. Figure 1 , wherein only a portion of the engine is shown; Figure 2 The overall structure of the powertrain provided in the exemplary embodiment of the present disclosure is schematically shown. Figure 2 , wherein the cylinder is not shown; Figure 3 The overall structure of the powertrain provided in the exemplary embodiment of the present disclosure is schematically shown. Figure 3 , wherein the connecting plate is not shown; Figure 4 is a cross-sectional view of a powertrain provided in an exemplary embodiment of the present disclosure Figure 1 , wherein the motor controller, reduction mechanism, and differential are removed, and only a portion of the engine is shown; Figure 5 yes Figure 4 A magnified schematic diagram of part A; Figure 6is a side structural diagram embodying a first stator and a second stator in an exemplary embodiment of the present disclosure; Figure 7 yes Figure 6 An enlarged schematic diagram of part B; Figure 8 yes Figure 6 A magnified schematic diagram of part C; Figure 9 This is a schematic diagram of the overall structure of the powertrain provided in the exemplary embodiment of the present disclosure. Figure 4 , wherein only a portion of the engine is shown; Figure 10 is a cross-sectional view of a powertrain provided in an exemplary embodiment of the present disclosure Figure 2 , wherein the motor controller, reduction mechanism, and differential are removed, and only a portion of the engine is shown; Figure 11 is a cross-sectional view of a powertrain provided in an exemplary embodiment of the present disclosure Figure 3 , wherein the motor controller, reduction mechanism, differential, generator and drive motor are removed, and only a portion of the engine is shown; Figure 12 This is a schematic diagram of the overall structure of the powertrain provided in the exemplary embodiment of the present disclosure. Figure 5 , wherein the motor controller, reduction mechanism, differential, and end plates are removed, and only a portion of the engine is shown; Figure 13 The explosion of the powertrain provided in the exemplary embodiment of the present disclosure Figure 1 , wherein the motor controller, reduction mechanism, differential, and end plates are removed, and only a portion of the engine is shown; Figure 14 The explosion of the powertrain provided in the exemplary embodiment of the present disclosure Figure 2 , wherein the motor controller, reduction mechanism, and differential are removed, and only a portion of the engine is shown; Figure 15 The explosion of the powertrain provided in the exemplary embodiment of the present disclosure Figure 3 , in which the motor controller, reduction mechanism, differential, and end plates are removed, and only a portion of the engine is shown.

[0030] Description of Reference Numerals 1. Housing; 10. Outer shell; 11. First housing portion; 110. Recessed portion; 12. Second housing portion; 13. End cover; 14. Annular plate; 15. Partition plate; 16. End plate; 17. Annular cylinder; 18. Second bearing; 19. First bearing; 2. Engine; 20. Cylinder block; 21. Crankshaft; 211. Mounting groove; 200. End wall; 3. Mounting cavity; 30. First mounting cavity; 300. Mounting area; 301. Connecting area; 31. Second mounting cavity; 4. Generator; 40. Second rotor; 401. Ring-shaped rotor core; 402. Support portion; 4021. Avoidance hole; 4022. Connector; 41. Second stator; 411. Second stator winding; 5. Drive motor; 50. Rotor shaft; 51. Rotor core; 52. First stator; 521. First stator winding; 6. Motor controller; 7. Speed ​​reduction mechanism; 70. Second housing; 8. Differential; 9. Stator core; 91. First stator slot; 90. Second stator slot. DETAILED DESCRIPTION

[0031] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0032] In the present disclosure, unless otherwise stated, directional words such as "up, down, front, back, left, and right" are described with reference to the vehicle in a normal driving state or a state capable of normal driving. For example, up and down can refer to up and down along the height direction of the vehicle, front and back can refer to front and back along the front-to-back direction of the vehicle, and left and right can refer to left and right along the width direction of the vehicle; "inside and outside" refer to the inside and outside of the outline of the corresponding component; "far and near" refer to the far and near of the spatial position of the corresponding component relative to another component. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have sequentiality or importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0033] according to Figures 1 to 15 As shown, the first aspect of the present disclosure provides a powertrain, which may include a housing 1, an engine 2, a generator 4 and a drive motor 5. The engine 2 may include a cylinder block 20 and a crankshaft 21. The housing 1 is connected to the cylinder block 20 to form an installation cavity 3 together with the cylinder block 20. The generator 4 and the drive motor 5 are both arranged in the installation cavity 3. The generator 4 is arranged around the outer peripheral side of the drive motor 5. The crankshaft 21 extends into the installation cavity 3 and is connected to the generator 4.

[0034] Through the above technical solution, that is, the housing 1 is connected to the cylinder block 20 of the engine 2 and together form an installation cavity 3, the generator 4 and the drive motor 5 are integrated in the installation cavity 3, and the generator 4 is arranged around the outer peripheral side of the drive motor 5. Through the "nested" layout, the internal space of the housing 1 is fully utilized, the axial dimension of the powertrain is reduced, the compactness of the layout is improved, and the complex wiring and connection components in the housing 1 are reduced, which significantly improves the overall integration. The generator 4 is externally nested coaxially with the drive motor 5, which can reduce the electromagnetic interference caused by the drive motor 5 to the outer generator 4, and is more reliable and safe to use. The crankshaft 21 of the engine 2 extends into the installation cavity 3 and is directly connected to the generator 4, reducing the number of redundant structures and components, thereby reducing the overall volume and weight, making the space occupied by the front cabin of the vehicle less, reducing the difficulty of layout, and reducing transmission losses, thereby improving energy conversion efficiency. In addition, the support of the cylinder block 20 on the housing 1 enhances the structural rigidity and stability of the powertrain, and improves its durability and reliability.

[0035] Among them, the cylinder block 20 of the engine 2 may include an end wall 200, and the housing 1 can be detachably connected to the end wall 200 to facilitate disassembly and maintenance. The crankshaft 21 of the engine 2 extends through the end wall 200 to the installation cavity 3 and is directly connected to the generator 4, reducing the number of redundant structures and components, thereby reducing the overall volume and weight, while reducing transmission losses and improving energy conversion efficiency.

[0036] The housing 1 and the end wall 200 may be detachable in any suitable manner, for example, by bolt connection or snap connection, but the present disclosure is not limited thereto.

[0037] It is understood that in the above-described embodiment, a sealing structure may be provided between the crankshaft 21 passing through the cylinder body 20 and the cylinder body 20 to prevent oil leakage or entry of external contaminants. For example, a multi-stage sealing ring or a labyrinth sealing structure may be used to ensure sealing performance at the connection. The present disclosure is not limited thereto.

[0038] In some embodiments, for example, referring to Figures 1 to 5 As shown, the drive motor 5 may include a first rotor, which is rotatably connected to the crankshaft 21 and the housing 1 around its own axis and is arranged coaxially with the crankshaft 21. In this way, the crankshaft 21 can provide installation conditions for the first rotor. For example, the rotor shaft 50 of the first rotor can be installed / supported by the crankshaft 21 to reduce the use of additional installation / support structures such as end plates and housings 10, thereby simplifying the overall structure of the powertrain, improving the overall integration, and reducing the space occupied by the vehicle's front cabin.

[0039] For example, Figure 4 and Figure 5As shown, the crankshaft 21 can be used to support the rotor shaft 50 of the first rotor, so as to reduce the use of the supporting end plate or the shell 1 used to support the rotor shaft 50 in the related art, thereby reducing the number of parts and reducing the occupation of the internal space of the shell 1; the rotor shaft 50 can be rotatably connected to the crankshaft 21 around its own axis without affecting the power output of the drive motor 5.

[0040] In some implementations, the crankshaft 21 of the engine 2, the generator 4, and the drive motor 5 can be coaxially arranged. This allows the crankshaft 21, generator 4, and drive motor 5 to maintain good alignment during operation, reducing vibration, noise, and mechanical wear caused by axis misalignment. Furthermore, this coaxial arrangement eliminates the need for additional transmission mechanisms, making power transmission more direct and effectively improving transmission efficiency. It also reduces manufacturing complexity and facilitates assembly.

[0041] In some embodiments, for example, referring to Figure 4 and Figure 5 As shown, the crankshaft 21 may include a first connecting portion connected to the first rotor and a second connecting portion connected to the generator 4, so that the crankshaft 21 can support the first rotor and the generator 4 at the same time, simplifying the connection structure and the number of parts between the crankshaft 21 and the generator 4, and the crankshaft 21 and the first rotor, making it easy to disassemble and assemble, while optimizing the force transmission path and reducing energy loss. The second connecting portion is arranged around the first connecting portion, effectively saving the internal space of the shell 1, thereby making the overall device smaller in size and lighter in weight.

[0042] Exemplarily, the first connecting portion may include a mounting groove 211, and the first rotor may include a rotor shaft 50, which is rotatably inserted into the mounting groove 211. The support of the rotor shaft 50 by the mounting groove 211 can improve the stability of the rotation of the rotor shaft 50. A first bearing 19 can be arranged in the mounting groove 211, and the rotor shaft 50 is connected to the first bearing 19 so that the rotor shaft 50 and the crankshaft 21 can rotate relative to each other. It can be understood that the end of the rotor shaft 50 facing away from the mounting groove 211 can be connected to the housing 1, and the housing 1 can provide installation conditions for the rotor shaft 50. Exemplarily, a second bearing 18 can be arranged between the rotor shaft 50 and the housing 1 so that the rotor shaft 50 can rotate relative to the housing 1.

[0043] In addition, when the power assembly is applied to a vehicle, the end of the rotor shaft 50 away from the mounting groove 211 can pass through the housing 1 and be driven and connected to the reduction mechanism 7, and the half shaft is connected through the reduction mechanism 7 to drive the vehicle.

[0044] Among them, the space occupied by the powertrain in different directions of the vehicle can be adaptively adjusted by adjusting its assembly layout (such as the layout in the front cabin of the vehicle). For example, when the engine 2 is arranged horizontally, that is, the axis of the crankshaft 21 is extended along the left-right direction of the vehicle, the size of the powertrain in the left-right direction of the vehicle can be at least reduced, thereby reducing the space occupied by the powertrain. When the engine 2 is arranged longitudinally, that is, the axis of the crankshaft 21 is extended along the front-rear direction of the vehicle, the size of the powertrain in the front-rear direction of the vehicle can be at least reduced, thereby reducing the space occupied by the powertrain.

[0045] In some embodiments, for example, referring to Figure 4 and Figure 5 As shown, the generator 4 may include a second rotor 40 and a support portion 402 connected to the second rotor 40. The support portion 402 is connected to the second connecting portion and has a clearance hole 4021 for the first rotor to pass through. Through the above structural design, the second rotor 40 is directly connected to the crankshaft 21 via the support portion 402, eliminating intermediate transmission components, reducing transmission losses, and thereby improving energy transfer efficiency. The provision of the clearance hole 4021 can provide installation space for the first rotor, avoiding assembly interference between the first rotor and the second connecting portion, and improving reliability and safety.

[0046] In some possible embodiments, the support portion 402 may include a first plate body connected to the crankshaft 21 and a second plate body connected to the first plate body, the first plate body extends radially, the second connecting portion may be constructed as an assembly hole (such as a bolt hole, etc.) formed on the crankshaft 21, so as to facilitate the connection between the first plate body and the crankshaft 21 through the connecting member 4022, the second plate body extends axially, the second rotor 40 may include an annular rotor core 401 connected to the second plate body, and the annular rotor core 401 is located on the side of the second plate body facing the second stator 41 of the generator 4; the avoidance hole 4021 may be formed in the first plate body, and the first plate body may be connected to the crankshaft 21 through the connecting member 4022 (for example, the connecting member 4022 may be constructed as a connecting bolt, etc.), and the rotor shaft 50 is provided with the avoidance hole 4021 to be connected to the crankshaft 21 through the first bearing 19; a permanent magnet may be provided on the annular rotor core 401 to realize the function of the generator 4, which will not be described in detail in this disclosure. In another embodiment, the support portion 402 may include an annular connecting plate extending radially, and the second rotor 40 includes an annular rotor core 401 and a permanent magnet arranged on the annular rotor core 401. The annular rotor core 401 and the connecting plate are detachably connected or constructed as one body to simplify the structure and assembly steps, thereby facilitating lightweight design and reducing occupied space.

[0047] In addition, the second rotor 40 is directly connected to the crankshaft 21 through the support portion 402. Compared with the traditional design, the large rotational inertia of the second rotor 40 is utilized to replace the function of the dual-mass flywheel, thereby smoothing the speed fluctuation of the crankshaft 21 and eliminating the dual-mass flywheel and torsional damper. This reduces the space occupied by redundant components in the internal space of the shell 1, making the overall weight of the powertrain lighter and the volume smaller. At the same time, it can reduce the force transmission path, reduce unnecessary mechanical losses, improve energy transmission efficiency, reduce fuel consumption, and reduce vibration sources and noise.

[0048] In some embodiments, for example, referring to Figure 4 As shown, the drive motor 5 may include a first stator 52 surrounding the outside of the first rotor, and the generator 4 may include a second rotor 40 and a second stator 41 disposed on the inside of the second rotor 40, the second stator 41 surrounding the outside of the first stator 52, and the first stator 52 and the second stator 41 are connected. For example, the generator 4 can be configured as an outer rotor motor, and at least a portion of the drive motor 5 can be embedded in the interior of the generator 4, with the second rotor 40, the second stator 41, the first stator 52, and the first rotor arranged radially from the outside to the inside. In this way, the generator 4 and the drive motor 5 can form a nested motor group. The nested motor group reduces the space occupied by the generator 4 and the drive motor 5 as a whole, thereby fully utilizing the space and improving the integration of the powertrain.

[0049] The first rotor may include a rotor shaft 50 and a rotor core 51 surrounding the rotor shaft 50. Permanent magnets may be provided on the rotor core 51 to achieve the function of driving the motor 5, which will not be described in detail in this disclosure.

[0050] In some embodiments, for example, referring to Figures 4 to 8 As shown, the first stator 52 and the second stator 41 can include the same stator core 9. By sharing the stator core 9, the functions of the first stator 52 and the second stator 41 can be integrated. For example, the driving function of the drive motor 5 and the power generation function of the generator 4 can be separated through the winding design. As a result, the radial and axial dimensions of the stator structure can be significantly reduced, saving space within the housing 1 (for example, the space in the installation cavity 3), thereby improving space utilization.

[0051] As will be appreciated, the stator core 9 is typically constructed from laminated silicon steel sheets. Therefore, sharing the same stator core 9 can reduce the amount of silicon steel sheets used, thereby reducing weight and, consequently, energy consumption, improving the vehicle's range and economy. Furthermore, sharing the same stator core 9 can simplify the production process, for example, eliminating the need for a single set of laminated silicon steel sheets. It also eliminates the need for additional mounting structures, such as brackets, thereby improving the integrity and stability of the powertrain.

[0052] In some embodiments, for example, referring to Figures 6 to 8 As shown, the first stator 52 may include a first stator winding 521, the second stator 41 may include a second stator winding 411, and the stator core 9 may include a plurality of silicon steel sheets stacked in the axial direction. At least a portion of the silicon steel sheets form first stator slots 91 for mounting the first stator winding 521, and at least a portion of the silicon steel sheets form second stator slots 90 for mounting the second stator winding 411. The above structural design can shorten and concentrate the magnetic field path, effectively reduce hysteresis loss and eddy current loss, and thus effectively improve energy conversion efficiency.

[0053] The second stator winding 411 may be disposed radially outside the first stator winding 521 to further shorten the magnetic field path. The present disclosure is not limited thereto.

[0054] It is understood that, to accommodate the distribution of the first stator winding 521 and the second stator winding 411, the plurality of silicon steel sheets can be axially divided into a first group of silicon steel sheets and a second group of silicon steel sheets, wherein the diameter of the first group of silicon steel sheets is larger than the diameter of the second group of silicon steel sheets, and the first group of silicon steel sheets is located between the crankshaft 21 and the second group of silicon steel sheets. The first group of silicon steel sheets is radially provided with first stator slots 91 and second stator slots 90 from the inside to the outside, for winding the first stator winding 521 and the second stator winding 411, respectively, and the second group of silicon steel sheets is provided with first stator slots 91 for winding the first stator winding 521. The present disclosure is not limited to this.

[0055] In some embodiments, for example, referring to Figures 9 to 15 As shown, the housing 1 may include an outer shell 10 and a partition 15. The outer shell 10 is connected to the engine 2. The partition 15 is located within the outer shell 10 to separate the installation cavity 3 into a first installation cavity 30 and a second installation cavity 31. The generator 4 is installed in the first installation cavity 30, and the drive motor 5 is installed in the second installation cavity 31. The partition 15 partitions the installation cavity 3, so that the generator 4 and the drive motor 5 can be arranged at intervals, facilitating targeted independent thermal management of the drive motor 5 and the generator 4. In addition, the provision of the partition 15 can improve the bending strength of the housing 1, while preventing heat transfer between the generator 4 and the drive motor 5, thereby reducing electromagnetic interference.

[0056] In some embodiments, for example, referring to Figures 9 to 15As shown, the first mounting cavity 30 can be arranged on the side of the second mounting cavity 31 close to the engine 2. For example, the first mounting cavity 30 can be arranged adjacent to the engine 2 to shorten the connection path between the engine 2 crankshaft 21 and the generator 4 located in the first mounting cavity 30, effectively improving torsional stiffness while reducing phase lag during vibration transmission. Of course, the first mounting cavity 30 can also be arranged adjacent to the second mounting cavity 31. In this way, the layout can be arranged in the axial direction in the order of the engine 2, the first mounting cavity 30, and the second mounting cavity 31, further improving the overall integration and compactness.

[0057] In some embodiments, for example, referring to Figures 9 to 15 As shown, the first installation cavity 30 and the second installation cavity 31 are partially staggered and overlapped in the axial direction to reduce the axial length of the powertrain, further improve the overall integration, and thus reduce the overall volume.

[0058] In some embodiments, for example, referring to Figures 9 to 15 As shown, the outer diameter of the first installation cavity 30 can be larger than the outer diameter of the second installation cavity 31. In this way, by rationally utilizing the spatial layout, the overall volume is reduced while providing sufficient installation space for other structures and components (such as the generator 4, the drive motor 5, and the motor controller 6).

[0059] Of course, in order to prevent the engine 2 from causing heat damage to the adjacent generator 4 when the engine 2 is in operation, a cooling system can be provided to effectively dissipate heat. For example, the cooling system can be a liquid cooling system that circulates water or other coolant between the engine 2 and the generator 4 to absorb heat. The present disclosure is not limited thereto.

[0060] In some embodiments, for example, referring to Figure 10 and Figure 11 As shown, a partition 15 can be disposed on a side proximal to the engine 2 , and an end plate 16 is disposed on a side of the housing 10 facing away from the engine 2 . The partition 15 and the end plate 16 together define a second mounting cavity 31 . The drive motor 5 can include a first rotor rotatably supported between the partition 15 and the end plate 16 . The partition 15 and the end plate 16 support the first rotor, ensuring stable operation of the drive motor 5 . The partition 15 and the end plate 16 together define the second mounting cavity 31 , making the overall structure more compact and effectively improving space utilization. This can also effectively reduce the possibility of vibration being transmitted to other structures within the housing 10 , thereby reducing noise pollution.

[0061] One of the partition plate 15 and the end plate 16 may be integrally formed with the housing 10, and the other may be detachably connected to the housing 10, for example, by bolting to facilitate later disassembly and maintenance. Alternatively, both the partition plate 15 and the end plate 16 may be detachably connected to the housing 10. This disclosure does not impose any specific limitations on this.

[0062] Of course, both the partition 15 and the end plate 16 may include a plate body and bearings disposed therein, so that the partition 15 and the end plate 16 also serve as bearing seats. The first rotor may include a rotor shaft 50 and a rotor core 51 surrounding the rotor shaft 50. Both ends of the rotor shaft 50 are respectively connected to the bearings of the partition 15 and the end plate 16. Of course, the drive motor 5 may further include a first stator 52 connected to the inner wall of the second mounting cavity 31. This disclosure does not specifically limit this.

[0063] In some embodiments, for example, referring to Figures 10 to 15 As shown, the housing 1 may include an annular cylinder 17 radially located between the first mounting cavity 30 and the second mounting cavity 31. The end plate 16 is connected to the inner side of the annular cylinder 17. The end plate 16, the annular cylinder 17, the outer shell 10, and the cylinder body 20 collectively enclose the first mounting cavity 30. Through the above-mentioned structural design, the space utilization rate inside the housing 1 can be further improved, the radial space can be fully utilized, and the overall integration can be improved. The provision of the annular cylinder 17 can improve the structural strength of the outer shell 10 and effectively block the propagation of noise.

[0064] The first mounting cavity 30 may further include a mounting area 300 and a connection area 301. The mounting area 300 may be arranged around the periphery of the second mounting space. The second stator 41 and second rotor 40 of the generator 4 may both be located in the mounting area 300. The support portion 402 may be located in the connection area 301. The second rotor 40 is connected to the crankshaft 21 via the support portion 402. The mounting area 300 arranged around the periphery of the second mounting space creates a "nested" design between the generator 4 and the drive motor 5, making the overall structure more compact and reducing overall volume and weight. Furthermore, the annular cylinder 17 may be partially located within the mounting area 300.

[0065] In some embodiments, for example, referring to Figures 10 to 15As shown, the generator 4 may include a second stator 41 disposed on the annular cylinder 17, a second rotor 40 surrounding the second stator 41, and a support portion 402 connected to the second rotor 40. The support portion 402 is connected to the crankshaft 21. By arranging the second stator 41 and the second rotor 40 within the first mounting cavity 30, with the second stator 41 disposed on the annular cylinder 17, the internal space of the housing 10 is fully utilized, making the overall structure more compact and reducing the overall volume and weight. The second rotor 40 is directly connected to the crankshaft 21 via the support portion 402, eliminating intermediate transmission components, reducing transmission losses, and improving energy transfer efficiency.

[0066] Exemplarily, the second rotor 40 may include an annular rotor core 401 and permanent magnets disposed on the annular rotor core 401. In some embodiments, as described above, the support portion 402 may include a connecting plate, the annular rotor core 401 being connected to the connecting plate, and the crankshaft 21 being able to drive the annular rotor core 401 to rotate via the connecting plate. The connecting plate may extend radially, and the annular rotor core 401 may extend axially. The annular rotor core 401 and the connecting plate may be detachably connected or integrally constructed to simplify the structure and assembly steps, facilitate lightweight design, and reduce space occupation. Alternatively, in some possible embodiments, the support portion 402 may include a first plate connected to the crankshaft 21 and a second plate connected to the first plate, the first plate extending radially, and the second plate extending axially. The second rotor 40 may include an annular rotor core 401 connected to the second plate, and the annular rotor core 401 is located on the side of the second plate facing the second stator 41 of the generator 4.

[0067] Among them, the support part 402 can be fitted into the end face of the crankshaft 21 and connected to the crankshaft 21 through the connecting piece 4022. In this way, it can ensure that the second rotor 40 of the generator 4 maintains a high degree of coaxiality with the crankshaft 21, reduce the load of the support part 402, better transmit the torque of the crankshaft 21 of the engine 2, reduce power loss, and at the same time, can also reduce the vibration and wear caused by eccentricity, and is easy to disassemble and assemble, reducing the difficulty and cost of maintenance.

[0068] The connecting member 4022 may be configured as a bolt, and the connecting plate and the crankshaft 21 may be connected in a manner similar to a flange connection.

[0069] In some embodiments, for example, referring to Figures 1 to 4 、 Figures 9 to 15As shown, the axial length of the generator 4 can be smaller than the axial length of the drive motor 5. For example, the axial length of the second stator 41 of the generator 4 can be smaller than the axial length of the first stator 52 of the drive motor 5, thereby optimizing the overall layout, reducing the axial length of the powertrain, and reducing the overall volume. This also provides ample space for the installation of the motor controller 6 (described below), improving the compactness of the layout, and reducing the complexity of the control circuit and signal transmission.

[0070] In some embodiments, for example, referring to Figure 1 and Figure 9 As shown, the powertrain can also include a motor controller 6, which is arranged axially side by side with the generator 4 and radially side by side with the drive motor 5. By optimizing the position of the motor controller 6, the signal transmission distance can be shortened and the response speed of the control system can be enhanced. In addition, the compact spatial layout of the generator 4, motor controller 6, and drive motor 5 improves the overall integration, reduces the overall volume, and improves the reliability of use.

[0071] In some embodiments, for example, referring to Figures 1 to 15 As shown, the housing 1 may include a first housing portion 11 and a second housing portion 12 connected in the axial direction, the end of the first housing portion 11 facing away from the second housing portion 12 is connected to the engine 2, the generator 4 is located on the inner side of the first housing portion 11, and the drive motor 5 is located on the inner side of the first housing portion 11 and the second housing portion 12. The first housing portion 11 and the second housing portion 12 are connected in the axial direction, which is convenient for assembly and disassembly, and the modular design facilitates production and subsequent maintenance. The generator 4 and the drive motor 5 are respectively located in different areas of the housing 1 to reasonably allocate space and avoid mutual interference between the motors. At the same time, the housing 1 can provide good protection for the generator 4 and the drive motor 5, reducing the impact of the external environment on their operation. In addition, the generator 4 and the drive motor 5 adopt a nested design, which can significantly reduce the axial space occupied.

[0072] The housing 10 mentioned above may also include a first housing portion 11 and a second housing portion 12 .

[0073] In some embodiments, for example, referring to Figures 1 to 4 、 Figures 9 to 11As shown, at least a portion of the outer peripheral wall of the second housing portion 12 may be recessed relative to the outer peripheral wall of the first housing portion 11 to form a recessed portion 110. The powertrain may further include a motor controller 6 disposed in recessed portion 110. Through the above-described structural design, the provision of recessed portion 110 fully utilizes the outer peripheral space of the housing 1. Embedding the motor controller 6 in recessed portion 110 eliminates the need for additional installation space and enhances overall integration. Furthermore, the placement of the motor controller 6 near the drive motor 5 and generator 4 shortens the electrical connection path, reduces wiring complexity, and reduces the potential for electromagnetic interference.

[0074] For example, both the first housing portion 11 and the second housing portion 12 can be annular. The outer diameter of the first housing portion 11 can be larger than the outer diameter of the second housing portion 12, so that when the first and second housing portions 11 and 12 are connected, a height difference is formed in the radial direction, forming the aforementioned recessed portion 110. The motor controller 6 is used to precisely control the operation of the motor group (including the drive motor 5 and the generator 4). It receives instructions from the vehicle control system and adjusts parameters such as the motor group's output power and speed based on the vehicle's driving conditions and needs. The motor controller 6 is connected to the motor group via a high-speed data transmission line to ensure rapid and accurate transmission of control signals.

[0075] In which, the first housing portion 11 can be connected to the cylinder body 20 by connecting bolts, the second housing portion 12 can be connected to the first housing portion 11, the generator 4 can be located on the inner side of the first housing portion 11, the drive motor 5 can be located on the inner side of the first housing portion 11 and the second housing portion 12, and the second stator winding 411 can be arranged on the radially outer side of the first stator winding 521.

[0076] For example, refer to Figure 4 、 Figure 11 、 Figure 15 As shown, the first housing portion 11 and the second housing portion 12 can be connected via an annular plate 14 so that the above-mentioned height difference can be formed in the radial direction after the first housing portion 11 and the second housing portion 12 are connected.

[0077] In addition, illustratively, the annular cylinder 17 may be connected to the annular plate 14 and / or the second housing portion 12 , and the inner diameters of the annular cylinder 17 and the second housing portion 12 may be the same so that the second stator 41 of the drive motor 5 can be mounted thereon.

[0078] For example, the first housing portion 11 , the second housing portion 12 , the annular plate 14 and the annular cylinder 17 may be constructed as one body.

[0079] Optionally, refer to Figures 1 to 4As shown, the end of the second housing portion 12 facing away from the first housing portion 11 can be connected to the end cover 13, and the end of the rotor shaft 50 of the drive motor 5 facing away from the crankshaft 21 can be rotatably connected to the end cover 13, and the second bearing 18 can be arranged in the end cover 13 so that the rotor shaft 50 can rotate relative to the end cover 13.

[0080] It is understandable that the end plate 16 can be configured as the end cover 13, or the end cover 13 can be configured as the end plate 16. The present disclosure is not limited thereto.

[0081] For example, the first housing portion 11 , the second housing portion 12 , the annular plate 14 and the end cover 13 may be constructed as one piece.

[0082] In some embodiments, for example, referring to Figures 1 to 3 as well as Figure 9 As shown, a reduction mechanism 7 may be provided on the side of the housing 1 facing away from the engine 2, and the drive motor 5 is connected to the input end of the reduction mechanism 7. The drive motor 5 transmits power through the reduction mechanism 7 and can operate at a high speed, achieving high torque output through deceleration and improving driving efficiency.

[0083] For example, the reduction mechanism 7 may employ a gear transmission structure, achieving deceleration and torque amplification through a combination of gears with varying gear ratios. Furthermore, a rigid connection is employed between the reduction mechanism 7 and the drive motor 5 to ensure stability and reliability during power transmission. The specific structure and power transmission method of the reduction mechanism 7 are relatively mature technologies and will not be further elaborated herein.

[0084] In some embodiments, for example, referring to Figures 1 to 3 as well as Figure 9 As shown, the powertrain can include a differential 8 arranged radially alongside the reduction gear 7. Differential 8 is connected to the reduction gear 7. This direct connection between differential 8 and reduction gear 7 efficiently distributes power to the wheels, improving the vehicle's driving performance and handling. This radial, side-by-side arrangement shortens the powertrain's axial length, further enhancing system compactness and facilitating installation. Placing differential 8 close to reduction gear 7 reduces intermediate transmission paths and components, reducing transmission losses and improving system efficiency.

[0085] The differential 8 and reduction mechanism 7 can be mounted within a second housing 70, which is connected to the housing 1. It will be appreciated that the differential 8 is used to enable the left and right wheels to rotate at different speeds when the vehicle turns, ensuring smooth and maneuverable driving. The differential 8 is connected to the motor assembly via the reduction mechanism 7 to transmit the power output of the motor assembly to the wheels via, for example, half-shafts. Thus, the integrated installation of the differential 8 and reduction mechanism 7 achieves a compact powertrain layout, improving space utilization. The differential 8 is a relatively mature technology and will not be further described in this disclosure. In addition, exemplarily, the second housing 70 can be a split housing so that the reduction mechanism 7 and the differential 8 can be installed therein and then assembled to protect the reduction mechanism 7 and the differential 8 therein. A portion of the second housing 70 can be connected to the end plate 16 or the end cover 13 by bolt connection or structural adhesive bonding, or a portion of the second housing 70 can be integrally formed with the end plate 16 or the end cover 13, or the end plate 16 or the end cover 13 can be a part of the second housing 70.

[0086] A second aspect of the present disclosure provides a vehicle including a powertrain. The powertrain exhibits all the advantages described in the aforementioned specific embodiments, which are not further detailed herein. For example, the vehicle may include an extended-range electric vehicle, in which the aforementioned combination of engine 2 and generator 4 may serve as a range extender. In particular, engine 2 may not directly drive the wheels, but may instead be used to generate electricity for generator 4. The present disclosure is not limited thereto.

[0087] In some embodiments, the vehicle may further include a transmission mechanism, axles, and wheels. The drive motor 5 is connected to the axles via the transmission mechanism, and the axles are connected to the wheels. This allows for efficient power output. The engine 2 transmits power to the generator 4. The generator 4 generates power, and the power output of the drive motor 5 is regulated and controlled by a motor controller 6. The drive motor 5 converts electrical energy into kinetic energy, which is then output to the axles via the transmission mechanism and then transmitted to the wheels to drive the vehicle.

[0088] In some embodiments, for example, referring to Figure 1 and Figure 9 As shown, the axis of the crankshaft 21 can extend along the width direction of the vehicle, so that the engine 2 is placed horizontally, and the engine 2, the generator 4 and the drive motor 5 are arranged in sequence along the width direction of the vehicle. For example, the generator 4 can be reasonably arranged on the right side of the engine 2 and directly connected to the crankshaft 21 of the engine 2 to simplify the force transmission path and achieve stable and efficient power output.

[0089] Optionally, the drive motor 5, the generator 4 and the engine 2 can be arranged coaxially to save space, shorten the power transmission path, reduce energy loss, and make the powertrain more compact and efficient.

[0090] In addition, the engine 2, drive motor 5 and generator 4 can be located above the half-shaft. This arrangement can make rational and effective use of space, which can not only improve the structural compactness of the powertrain and achieve rational use of space, but also improve the convenience of after-sales service and maintenance.

[0091] The motor controller 6 may be located above the drive motor 5 to further improve the compactness of the layout.

[0092] For example, the transmission mechanism may include the aforementioned reduction gear mechanism 7 and differential 8. The drive motor 5 is connected to the differential 8 via the reduction gear mechanism 7. The reduction gear mechanism 7 is disposed on the side of the drive motor 5 axially facing away from the engine 2. The differential 8 is located below the reduction gear mechanism 7 and connected to the half-shafts. For example, the engine 2 may be positioned horizontally, with the engine 2, generator 4, drive motor 5, and reduction gear mechanism 7 arranged sequentially from left to right along the width of the vehicle. The motor controller 6 is located above the reduction gear mechanism 7 and drive motor 5, and the differential 8 is located below the reduction gear mechanism 7. This further saves space and improves the integration of the powertrain. The present disclosure is not limited to this.

[0093] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0094] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0095] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A powertrain, characterized in that: include: case; The engine comprises a cylinder block and a crankshaft, wherein the housing is connected to the cylinder block to form a mounting cavity together with the cylinder block; a generator, disposed in the mounting cavity, wherein the crankshaft extends into the mounting cavity and is connected to the generator; as well as The drive motor is arranged in the installation cavity, and the generator is arranged around the outer circumference of the drive motor.

2. The powertrain according to claim 1, characterized in that: The drive motor includes a first rotor, which is connected to the crankshaft and the housing so as to be rotatable around its own axis and is arranged coaxially with the crankshaft.

3. The powertrain according to claim 2, characterized in that: The crankshaft includes a first connection portion connected to the first rotor and a second connection portion connected to the generator, wherein the second connection portion is arranged around the first connection portion.

4. The powertrain according to claim 3, characterized in that: The first connecting portion includes a mounting slot, and the first rotor includes a rotor shaft. The rotor shaft is rotatably inserted into the mounting slot.

5. The powertrain according to claim 3, characterized in that: The generator includes a second rotor and a support portion connected to the second rotor, the support portion is connected to the second connection portion, and the support portion has an avoidance hole for the first rotor to pass through.

6. The powertrain according to claim 2, characterized in that: The drive motor includes a first stator surrounding the outside of the first rotor, and the generator includes a second rotor and a second stator arranged inside the second rotor, and the second stator is arranged outside the first stator.

7. The powertrain according to claim 6, characterized in that: The first stator and the second stator include a same stator core.

8. The powertrain according to claim 7, characterized in that: The first stator includes a first stator winding, the second stator includes a second stator winding, and the stator core includes a plurality of silicon steel sheets stacked in the axial direction. At least a portion of the silicon steel sheets form first stator slots for installing the first stator winding, and at least a portion of the silicon steel sheets form second stator slots for installing the second stator winding.

9. The powertrain according to claim 1, characterized in that: The housing includes an outer shell and a partition, the outer shell is connected to the engine, and the partition is located inside the outer shell to separate the installation cavity into a first installation cavity and a second installation cavity. The generator is installed in the first installation cavity, and the drive motor is installed in the second installation cavity.

10. The powertrain according to claim 9, characterized in that: The first installation cavity is arranged on a side of the second installation cavity close to the engine. The first installation cavity and the second installation cavity partially overlap in the axial direction. The outer diameter of the first installation cavity is larger than the outer diameter of the second installation cavity.

11. The powertrain according to claim 9, characterized in that: The partition is arranged on a side close to the engine, and an end plate is arranged on a side of the housing away from the engine. The partition and the end plate together form the second installation cavity, and the drive motor includes a first rotor rotatably supported between the partition and the end plate.

12. The powertrain according to claim 10, characterized in that: The housing includes an annular cylinder located radially between the first installation cavity and the second installation cavity, the partition is connected to the inner side of the annular cylinder, and the partition, the annular cylinder, the outer shell and the cylinder body together form the first installation cavity.

13. The powertrain according to claim 12, characterized in that: The generator includes a second stator provided on the annular cylinder, a second rotor surrounding the second stator, and a support portion connected to the second rotor, wherein the support portion is connected to the crankshaft.

14. The powertrain according to claim 1, wherein: The axial length of the generator is smaller than the axial length of the drive motor.

15. The powertrain according to claim 14, characterized in that: The powertrain further includes a motor controller, which is arranged side by side with the generator in the axial direction and is arranged side by side with the drive motor in the radial direction.

16. The powertrain according to claim 1, characterized in that: The housing includes a first housing portion and a second housing portion connected along the axial direction, wherein one end of the first housing portion facing away from the second housing portion is connected to the engine, the generator is located on the inner side of the first housing portion, and the drive motor is located on the inner sides of the first housing portion and the second housing portion.

17. The powertrain according to claim 16, characterized in that: At least a portion of the outer peripheral wall of the second housing portion is recessed relative to the outer peripheral wall of the first housing portion to form a recessed portion. The power assembly further includes a motor controller disposed in the recessed portion.

18. The powertrain according to claim 1, wherein: A reduction mechanism is provided on a side of the housing facing away from the engine, and the drive motor is connected to an input end of the reduction mechanism.

19. The powertrain according to claim 18, characterized in that: The powertrain includes a differential arranged radially side by side with the reduction mechanism, and the differential is connected to the reduction mechanism.

20. A vehicle, characterized in that: A powertrain comprising any one of claims 1-19.

21. The vehicle according to claim 20, characterized in that The vehicle further comprises a transmission mechanism, a half-axle and wheels. The drive motor is driven and connected to the half-axle through the transmission mechanism, and the half-axle is connected to the wheels.

22. The vehicle according to claim 21, characterized in that The axis of the crankshaft extends in the width direction of the vehicle; and / or, The drive motor, the generator and the engine are coaxially arranged; and / or, The engine, the drive motor and the generator are located above the half shaft.

Images