Hybrid power system and vehicle

Abstract

The utility model discloses a hybrid power system and a vehicle. The hybrid power system comprises an engine, a first motor, a second motor, a first planet row, a second planet row, a power output shaft and a locking mechanism. The engine is in transmission connection with the first planet row, and the first planet row is connected with the power output shaft. An output shaft of the first motor is connected with the first planet row, the second motor is connected with the second planet row, and the second planet row is connected with the first planet row and the power output shaft. The first motor, the second motor, the first planet row and the second planet row are coaxially arranged; the locking mechanism is connected with an output shaft of the first motor and used for controlling the output shaft of the first motor to be in linkage or not in linkage with the first planet row. According to the hybrid power system, the overall framework design is reasonable, a power dividing mode and an engine direct drive mode can be achieved at the same time, it is ensured that the hybrid power system operates efficiently under all working conditions, and the economical efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hybrid power systems, and in particular to a hybrid power system and a vehicle. Background Art

[0002] Existing hybrid systems include series (range-extended), parallel, and hybrid architectures. Hybrid architectures include series-parallel and power-split architectures. The power-split architecture distributes engine torque and power to the first motor and the wheel ends based on the angular velocity and torque distribution relationship between the gears in the planetary gearset. In other words, at low wheel-end speeds, the speed of the first motor can be decoupled from the engine and wheel ends in a power-split hybrid transmission, achieving continuously variable transmission and enabling continuous adjustment of engine power distribution between the power output shaft and the first motor. However, existing hybrid system architectures are poorly designed, failing to combine power-split mode with direct engine drive. Due to the low efficiency of the power-split mode in medium and high-speed driving conditions, the hybrid system cannot guarantee efficient operation under all driving conditions, resulting in poor economy. Utility Model Content

[0003] The embodiments of the present invention provide a hybrid power system and a vehicle to solve the problem that the existing hybrid power system architecture is unreasonable and cannot have both a power split mode and an engine direct drive mode.

[0004] A hybrid power system includes an engine, a first motor, a second motor, a first planetary gear, a second planetary gear, a power output shaft, and a locking mechanism;

[0005] The engine is in transmission connection with the first planetary gear, and the first planetary gear is connected to the power output shaft;

[0006] The output shaft of the first motor is connected to the first planetary gear, the second motor is connected to the second planetary gear, and the second planetary gear is connected to the first planetary gear and the power output shaft;

[0007] The first motor, the second motor, the first planetary gear and the second planetary gear are coaxially arranged;

[0008] The locking mechanism is connected to the output shaft of the first motor, and is used to control whether the output shaft of the first motor is linked to or not linked to the first planetary gear.

[0009] Preferably, the first planetary gear set and the second planetary gear set are located between the first motor and the second motor.

[0010] Preferably, the first planetary gear comprises a first sun gear, a first planetary gear, a first planet carrier and a first ring carrier structure;

[0011] The first sun gear is sleeved on the output shaft of the first motor;

[0012] The first planetary gear is sleeved on the first planetary carrier, and the first planetary gear is engaged with the first sun gear and the first ring carrier structure;

[0013] The first planet carrier is in transmission connection with the engine;

[0014] The first rack structure is connected to the second planetary gear and the power output shaft, and the first rack structure is freely rotatable.

[0015] Preferably, the second planetary gear comprises a second sun gear, a second planetary gear and a second ring carrier structure;

[0016] The second sun gear is sleeved on the output shaft of the second motor;

[0017] The second planet gear is meshed with the second sun gear;

[0018] Either one of the first and second rack structures is connected to the second planetary gear, and the other one is meshed with the second planetary gear, and the second rack structure is locked.

[0019] Preferably, the first rack structure includes a ring gear frame, the second rack structure includes a second ring gear, the ring gear frame is connected to the second planetary gear, and the second ring gear is meshed with the second planetary gear;

[0020] Alternatively, the first carrier structure includes a common ring gear, the second carrier structure includes a second planetary wheel carrier, the second planetary wheel carrier is connected to the second planetary wheels, and the common ring gear is meshed with the second planetary wheels.

[0021] Preferably, the power output shaft is provided inside the first motor and the second motor, and is arranged concentrically with the first motor and the second motor;

[0022] Alternatively, the power output shaft is arranged outside the first motor and the second motor, and the power output shaft is connected to the first planetary gear and the second planetary gear through a transmission assembly.

[0023] Preferably, the transmission assembly includes a third output gear and a transfer gear, the transfer gear is provided on the ring gear carrier of the first planetary gear set, the third output gear is provided on the power output shaft, and the third output gear is meshed with the transfer gear.

[0024] Preferably, the transmission assembly includes a third output gear and a ring gear hub;

[0025] The ring gear hub is arranged on the common ring gear of the first planetary gear set, and the third output gear is meshed with the ring gear hub.

[0026] Preferably, the hybrid system further comprises an output gear and an engagement device;

[0027] The output shaft of the engine is connected to the output gear via the engagement device, and the output gear is meshed with the first planetary gear;

[0028] The engagement device is used to control the engine to provide power or not to provide power to the power output shaft.

[0029] Preferably, the hybrid power system further includes a gear lock, which is installed on the output gear and is used to switch between the engine drive and the first motor drive.

[0030] Preferably, the first planetary gear comprises a first planetary carrier and a first planetary carrier gear provided on the first planetary carrier, the first planetary carrier gear comprises a first input gear; the output gear comprises a first output gear, the first output gear is connected to the output shaft of the engine via the engagement device, and the first output gear is meshed with the first input gear;

[0031] Alternatively, the first planetary gear comprises a first planet carrier and a first planet carrier gear provided on the first planet carrier, and the first planet carrier gear comprises a first input gear and a second input gear;

[0032] The output gear includes a first output gear and a second output gear, the first output gear is meshed with the first input gear, and the second output gear is meshed with the second input gear.

[0033] The engagement device is disposed between the first output gear and the second output gear, connected to the output shaft of the engine, and configured to engage with the first output gear or the second output gear.

[0034] A vehicle comprising a front drive differential, a rear drive differential and the hybrid power system;

[0035] The front end of the power output shaft is connected to the front drive differential, and the rear end of the power output shaft is connected to the rear drive differential;

[0036] The power output shaft is connected to the first planetary gear.

[0037] Preferably, the vehicle further comprises a front drive clutch and / or a rear drive clutch;

[0038] The front drive clutch is arranged between the front end of the power output shaft and the front drive differential;

[0039] The rear drive clutch is arranged between the rear end of the power output shaft and the rear drive differential.

[0040] In the hybrid system and vehicle described above, the engine is connected to the first electric motor via a first planetary gear set, which is connected to the power output shaft. A locking mechanism is connected to the first electric motor. By adjusting the locking mechanism to be open or locked, the output shaft of the first electric motor can be linked or disconnected with the first planetary gear set, enabling switching between a power split mode and an engine direct drive mode. Specifically, when the locking mechanism is locked, the output shaft of the first electric motor is linked to the first planetary gear set, allowing the engine to drive the power output shaft via the first planetary gear set, thereby entering the engine direct drive mode. When the locking mechanism is unlocked, the output shaft of the first electric motor is disconnected from the first planetary gear set, allowing the engine to drive the first electric motor (e.g., a generator) to generate electricity while also driving the power output shaft via the first planetary gear set, thereby entering the power split mode. This hybrid system architecture is rationally designed, enabling both power split mode and engine direct drive mode, ensuring efficient operation of the hybrid system under all operating conditions, thereby improving economic efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0042] Figure 1 This is a first arrangement structure diagram of a hybrid power system in one embodiment of the present utility model;

[0043] Figure 2 This is a second arrangement structure diagram of a hybrid power system in one embodiment of the present utility model;

[0044] Figure 3 This is a third arrangement structure diagram of a hybrid power system in one embodiment of the present utility model;

[0045] Figure 4 This is a fourth arrangement structure diagram of a hybrid power system in one embodiment of the present utility model;

[0046] Figure 5 This is a fifth arrangement structure diagram of a hybrid power system in one embodiment of the present utility model;

[0047] Figure 6 This is a sixth arrangement structure diagram of a hybrid power system in one embodiment of the present utility model;

[0048] Figure 7 This is a seventh arrangement structure diagram of a hybrid power system in one embodiment of the present utility model;

[0049] Figure 8 This is an eighth arrangement structure diagram of a hybrid power system in one embodiment of the present utility model;

[0050] Figure 9 This is a ninth arrangement structure diagram of a hybrid power system in an embodiment of the present utility model;

[0051] Figure 10 This is a tenth arrangement structure diagram of a hybrid power system in one embodiment of the present utility model;

[0052] Figure 11 This is an eleventh arrangement structure diagram of a hybrid power system in an embodiment of the present utility model;

[0053] Figure 12 This is a twelfth arrangement structure diagram of a hybrid power system in one embodiment of the present utility model;

[0054] Figure 13 This is the thirteenth arrangement structure diagram of the hybrid power system in one embodiment of the present utility model;

[0055] Figure 14 This is the fourteenth arrangement structure diagram of the hybrid power system in one embodiment of the present utility model;

[0056] Figure 15 This is a fifteenth arrangement structure diagram of a hybrid power system in one embodiment of the present utility model;

[0057] Figure 16 This is a sixteenth arrangement structure diagram of a hybrid power system in an embodiment of the present utility model;

[0058] Figure 17 This is a seventeenth arrangement structure diagram of a hybrid power system in an embodiment of the present utility model;

[0059] Figure 18 This is an eighteenth arrangement structure diagram of a hybrid power system in an embodiment of the present utility model;

[0060] Figure 19 This is a nineteenth arrangement structure diagram of a hybrid power system in an embodiment of the present utility model;

[0061] Figure 20 This is the twentieth arrangement structure diagram of the hybrid power system in one embodiment of the present utility model;

[0062] Figure 21 This is the twenty-first arrangement structure diagram of the hybrid power system in one embodiment of the present utility model;

[0063] Figure 22 This is the twenty-second arrangement structure diagram of the hybrid power system in one embodiment of the present utility model;

[0064] Figure 23 This is the twenty-third arrangement structure diagram of the hybrid power system in one embodiment of the present utility model;

[0065] Figure 24 This is the twenty-fourth arrangement structure diagram of the hybrid power system in one embodiment of the present utility model;

[0066] Figure 25 It is a logic diagram of the hybrid power system in different modes in one embodiment of the present invention.

[0067] Among them, 1. engine; 2. first motor; 3. first planetary row; 31. first sun gear; 32. first planetary gear; 33. first planetary carrier; 34. first planetary carrier gear; 341. first input gear; 342. second input gear; 35. ring gear carrier; 36. common ring gear; 4. power output shaft; 5. locking mechanism; 6. second motor; 7. second planetary row; 71. second sun gear; 72. second planetary gear; 73. second ring gear; 74. second planetary gear carrier; 8. transmission assembly; 81. third output gear; 82. transfer gear; 83. ring gear hub; 9. output gear; 91. first output gear; 92. second output gear; 10. engagement device; 11. gear lock; 12. front drive clutch; 13. rear drive clutch; 14. front drive differential; 15. rear drive differential. DETAILED DESCRIPTION

[0068] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0069] In the description of the present invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0070] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0071] The present invention provides a hybrid power system. Figure 1-25 As shown, the hybrid system includes an engine 1, a first motor 2, a second motor 6, a first planetary gear 3, a second planetary gear 7, a power output shaft 4 and a locking mechanism 5; the engine 1 is transmission-connected to the first planetary gear 3, and the first planetary gear 3 is connected to the power output shaft 4; the output shaft of the first motor 2 is connected to the first planetary gear 3, the second motor 6 is connected to the second planetary gear 7, and the second planetary gear 7 is connected to the first planetary gear 3 and the power output shaft 4; the first motor 2, the second motor 6, the first planetary gear 3 and the second planetary gear 7 are coaxially arranged; the locking mechanism 5 is connected to the output shaft of the first motor 2, and is used to control whether the output shaft of the first motor 2 is linked or not to the first planetary gear 3.

[0072] As an example, the hybrid system includes an engine 1, a first motor 2, a first planetary gear 3, a power take-off shaft 4, and a locking mechanism 5. During installation, the engine 1 is in transmission connection with the first motor 2 via the first planetary gear 3, i.e., the engine 1 is connected to the first planetary gear 3, the first planetary gear 3 is connected to the output shaft of the first motor 2, and the first planetary gear 3 is connected to the power take-off shaft 4. This arrangement allows the engine 1 to drive the first motor 2 (e.g., a generator) to generate electricity and, at the same time, to rotate the power take-off shaft 4 via the first planetary gear 3. The first motor 2 can also rotate the power take-off shaft 4 via the first planetary gear 3. The locking mechanism 5 is connected to the output shaft of the first motor 2. By adjusting whether the locking mechanism 5 is open or closed, the output shaft of the first motor 2 can be linked or disconnected with the first planetary gear 3, enabling switching between a power split mode and an engine direct drive mode. When the locking mechanism 5 is locked, the output shaft of the first motor 2 is disconnected from the first planetary gear 3, enabling the engine to enter the engine direct drive mode. When the locking mechanism 5 is open, the output shaft of the first motor 2 is linked to the first planetary gear 3, enabling the engine to enter the power split mode. Specifically, the locking mechanism 5 is controlled to be locked, that is, the output shaft of the first motor 2 is locked, and the engine 1 is controlled to work, so that the engine 1 cannot drive the first motor 2 to rotate through the first planetary gear 3. The first motor 2 does not work, and the engine 1 can drive the power output shaft 4 to rotate through the first planetary gear 3, so that the hybrid system enters the engine direct drive mode; or, the engine 1 is controlled to work, and the locking mechanism 5 is opened, that is, the output shaft of the first motor 2 can rotate freely. At this time, the engine 1 can drive the first motor 2 to rotate through the first planetary gear 3, so that the first motor 2 generates electricity. The engine 1 can also drive the power output shaft 4 to rotate through the first planetary gear 3, so that the hybrid system enters the power split mode. The hybrid system architecture in this example is reasonably designed and can have both the power split mode and the engine direct drive mode, so that the hybrid system can operate efficiently under low-speed and medium-high-speed conditions to improve economy. Among them, the locking mechanism 5 can be a clutch or an electromagnetic latch.

[0073] As an example, the hybrid system also includes a second motor 6 and a second planetary gear 7; during installation, the second motor 6 is connected to the second planetary gear 7, and the second planetary gear 7 is connected to the first planetary gear 3 and the power output shaft 4; in this way, the power provided by the second motor 6 (for example, a drive motor) can drive the second planetary gear 7 to rotate, and the second planetary gear 7 can directly drive the power output shaft 4 to rotate, or it can be connected to the first planetary gear 3 as a whole and then drive the power output shaft 4 to rotate together. In this example, the locking mechanism 5 is controlled to be locked, the engine 1 is working, the first motor 2 is not working, and the second motor 6 is not working, and the engine 1 drives the power output shaft 4 to rotate through the first planetary gear 3, so that the hybrid system enters the engine direct drive mode; or, the locking mechanism 5 is controlled to be opened, the engine 1 is working, the first motor 2 is working, and the second motor 6 is working, the engine 1 can drive the first motor 2 to generate electricity through the first planetary gear 3, the engine 1 can also drive the power output shaft 4 to rotate through the first planetary gear 3, and the second motor 6 can drive the power output shaft 4 to rotate through the second planetary gear 7, so that the hybrid system enters the power split mode; or, the locking mechanism 5 is controlled to be locked, the engine 1 is working, the first motor 2 is not working, and the second motor 6 is working, so that the engine 1 drives the power output shaft 4 to rotate through the first planetary gear 3, and the second motor 6 can drive the power output shaft 4 to rotate through the second planetary gear 7, so that the hybrid system enters the parallel mode.

[0074] In this example, the locking mechanism 5 is connected to the output shaft of the first motor 2. When the locking mechanism 5 is locked, the output shaft of the first motor 2 is not linked to the first planetary gearbox 3. Depending on whether the second motor 6 is working, the hybrid system can enter the parallel mode or the engine direct drive mode; when the locking mechanism 5 is opened, the output shaft of the first motor 2 is linked to the first planetary gearbox 3, and can enter the power split mode. This hybrid system architecture is reasonably designed and can have power split mode, engine direct drive mode and parallel mode, so that the hybrid system can ensure efficient operation under all working conditions to improve economy.

[0075] In this example, the first motor 2, the second motor 6, the first planetary gear 3 and the second planetary gear 7 are coaxially arranged, and the rotation centers of the four are located on the same straight line. The forces output by the first planetary gear 3 and the second planetary gear 7 can offset each other, so that only torque but no force acts on the rotation center line, which can reduce the force on the power output shaft and extend the service life of the power output shaft; at the same time, by setting the first planetary gear 3 and the second planetary gear 7, the speed ratio can be amplified without taking up too much space, and the structure is more compact.

[0076] In one embodiment, if Figure 1-24 As shown, the first planetary gear set 3 and the second planetary gear set 7 are located between the first electric machine 2 and the second electric machine 6 .

[0077] As an example, in the structural arrangement of the hybrid system, the first planetary gear 3 and the second planetary gear 7 are located between the first motor 2 and the second motor 6. In this way, the structure between the first planetary gear 3 and the second planetary gear 7 is more compact, occupies less space, and has a short power transmission path, thereby ensuring transmission performance.

[0078] In one embodiment, if Figure 1-24 As shown, the first planetary gear 3 includes a first sun gear 31, a first planetary gear 32, a first planetary carrier 33 and a first carrier structure; the first sun gear 31 is mounted on the output shaft of the first motor 2; the first planetary gear 32 is mounted on the first planetary carrier 33, and the first planetary gear 32 is engaged with the first sun gear 31 and the first carrier structure; the first planetary carrier 33 is transmission-connected to the engine 1; the first carrier structure is connected to the second planetary gear 7 and the power output shaft 4, and the first carrier structure is freely rotatable.

[0079] As an example, the first planetary row 3 includes a first sun gear 31, a first planetary gear 32, a first planetary carrier 33 and a first ring frame structure; during installation, the first sun gear 31 is mounted on the output shaft of the first motor 2, and the first planetary gear 32 is mounted on the first planetary carrier 33, the inner ring of the first planetary gear 32 is engaged with the first sun gear 31, and the outer ring of the first planetary gear 32 is engaged with the first ring frame structure; the first planetary carrier 33 is connected to the engine 1 by transmission, and specifically can be connected by transmission through a gear assembly or other structure; the ring gear, planetary gear and sun gear in the first planetary row 3 are both connected together and can rotate independently of each other to form a first degree of freedom, and the first ring frame structure can rotate freely to form a second degree of freedom, that is, the first planetary row 3 has two degrees of freedom. In this example, the locking mechanism 5 cooperates with the first planetary gear train 3 to control whether the output shaft of the first motor 2 is linked or not with the first planetary gear train 3, and also changes the degree of freedom of the first planetary gear train 3 so that the hybrid system can switch between the power split mode and the engine direct drive mode. Specifically, when the locking mechanism 5 is opened, the first motor 2 is linked with the first planetary gear train 3. At this time, the first planetary gear train 3 has two degrees of freedom, so that the engine 1 can drive the first motor 2 to rotate through the first planetary gear train 3 to generate electricity, and can also drive the power output shaft 4 to rotate through the first planetary gear train 3 to enable the hybrid system to enter the power split mode; when the locking mechanism 5 is locked, the first motor 2 is not linked with the first planetary gear train 3. At this time, the first planetary gear train 3 has only one degree of freedom, that is, the engine 1 can only drive the power output shaft 4 to rotate through the first planetary gear train 3, and cannot control the operation of the first motor 2, so that the hybrid system enters the engine direct drive mode.

[0080] In addition, the first carrier structure is connected to the second planetary gear 7 and to the power take-off shaft 4. This provides power to the power take-off shaft 4 via the first carrier structure, driving wheels or other driven components connected to the power take-off shaft 4. This arrangement allows the power provided by the engine 1 to rotate the first planetary carrier gear 34 via the output gear 9. The first planetary carrier gear 34, in turn, drives the first planetary carrier 33, which in turn drives the first planetary gears 32. This simultaneously rotates the first carrier structure and the first sun gear 31, thereby providing power to the power take-off shaft 4 and the first motor 2. The first motor 2 can also provide power by rotating the first sun gear 31 via its output shaft. The first sun gear 31 drives the first planetary gears 32, which in turn drives the first carrier structure, thereby providing power to the power take-off shaft 4. The first carrier structure is the one that meshes with the first planetary gears 32. A carrier structure is a general term for a ring gear or a wheel carrier. It can consist of either a ring gear or a wheel carrier. The ring gear meshes with the planetary gears, while the wheel carrier mounts the planetary gears, allowing them to rotate around the carrier.

[0081] In one embodiment, if Figure 1-24 As shown, the second planetary gear 7 includes a second sun gear 71, second planetary gears 72 and a second carrier structure; the second sun gear 71 is sleeved on the output shaft of the second motor 6; the second planetary gears 72 are engaged with the second sun gear 71; either one of the first carrier structure and the second carrier structure is connected to the second planetary gear 72, and the other is engaged with the second planetary gear 72, and the second carrier structure is locked.

[0082] As an example, the second planetary gear 7 includes a second sun gear 71 , second planetary gears 72 and a second carrier structure. The second carrier structure is a carrier structure connected to or meshed with the second planetary gears 72 . During installation, the second rack structure is fixed to play a supporting role, and then the second sun gear 71 is sleeved on the output shaft of the second motor 6, the inner side of the second planetary gear 72 is meshed with the second sun gear 71, the second rack structure is locked, and the second rack structure is connected to the first planetary row 3, specifically to the first rack structure of the first planetary row 3. The planetary gears and sun gear in the second planetary row 7 are connected together and can rotate freely with one degree of freedom, while the ring gear or planetary carrier of the second planetary row 7 is locked, so that the ring gear or planetary carrier of the second planetary row 7 cannot rotate freely; in this way, the second rack structure is used as a support reference to provide support for the rotation of the second sun gear 71 and the second planetary gear 72. The power provided by the second motor 6 can drive the second sun gear 71 to rotate, and the second sun gear 71 drives the second planetary gear 72 to rotate. The second planetary gear 72 can directly provide power to the power output shaft 4; it can also be connected to the first rack structure as a whole to jointly provide power to the power output shaft 4.

[0083] As an example, either one of the first and second rack structures is connected to the second planet gear 72, and the other one is meshed with the second planet gear 72. In this way, the second planet gear 7 has the following two arrangement structures:

[0084] The first arrangement structure, such as Figure 1 、 Figure 3 、 Figure 5 、 Figure 7 、 Figure 9 、 Figure 11 、 Figure 13 、 Figure 15 、 Figure 17 、 Figure 19 、 Figure 21 and Figure 23 As shown, a wheel carrier is provided in the first rack structure, and the wheel carrier of the first rack structure is passed through the second planetary gear 72 and is connected to the second planetary gear 72 so that the second planetary gear 72 can rotate around the wheel carrier; accordingly, the second rack structure is provided with a ring gear, which meshes with the second planetary gear 72. The power provided by the second motor 6 drives the second sun gear 71 to rotate through its own output shaft, and the second sun gear 71 drives the second planetary gear 72 to rotate. The second planetary gear 72 rotates on the inner side of the second rack structure to drive the first rack structure to rotate, and after being connected as a whole with the first rack structure, they jointly provide power to the power output shaft 4.

[0085] The second arrangement structure, such as Figure 2 、 Figure 4 、 Figure 6 、 Figure 8 、 Figure 10 、 Figure 12 、 Figure 14 、 Figure 16 、 Figure 18 、 Figure 20 、 Figure 22 and Figure 24 As shown, a wheel carrier is provided in the second rack structure, and the wheel carrier in the second rack structure is passed through the second planetary gear 72 and is connected to the second planetary gear 72 so that the second planetary gear 72 can rotate around the wheel carrier; accordingly, the first rack structure is provided with a ring gear, which meshes with the second planetary gear 72. The power provided by the second motor 6 drives the second sun gear 71 to rotate through its own output shaft, and the second sun gear 71 drives the second planetary gear 72 to rotate. The second planetary gear 72 rotates on the second rack structure to drive the first rack structure to rotate, and after being connected as a whole with the first rack structure, they jointly provide power to the power output shaft 4.

[0086] In one embodiment, if Figure 1-24As shown, the first rack structure includes the ring gear carrier 35, the second rack structure includes the second ring gear 73, the ring gear carrier 35 is connected to the second planetary gear 72, and the second ring gear 73 is engaged with the second planetary gear 72; or, the first rack structure includes the common ring gear 36, the second rack structure includes the second planetary gear carrier 74, the second planetary gear carrier 74 is connected to the second planetary gear 72, and the common ring gear 36 is engaged with the second planetary gear 72.

[0087] As an example, Figure 1 、 Figure 3 、 Figure 5 、 Figure 7 、 Figure 9 、 Figure 11 、 Figure 13 、 Figure 15 、 Figure 17 、 Figure 19 、 Figure 21 and Figure 23 As shown, when the first ring gear frame structure adopts the ring gear frame 35, the ring gear frame 35 is provided with a first ring gear and a wheel carrier, the first ring gear of the ring gear frame 35 is engaged with the first planetary gear 32, and the wheel carrier of the ring gear frame 35 is connected to the second planetary gear 72, so that the second planetary gear 72 can rotate around the wheel carrier; accordingly, the second ring gear frame structure adopts the second ring gear 73, the outer side of the second ring gear 73 is locked, and the inner side of the second ring gear 73 is engaged with the second planetary gear 72, the second planetary gear 72 is connected to the ring gear frame 35, and the ring gear frame 35 is connected to the power output shaft 4. The rotation of the second planetary gear 72 can drive the ring gear frame 35 to rotate, thereby providing power to the power output shaft 4.

[0088] As another example, Figure 2 、 Figure 4 、 Figure 6 、 Figure 8 、 Figure 10 、 Figure 12 、 Figure 14 、 Figure 16 、 Figure 18 、 Figure 20 、 Figure 22 and Figure 24 As shown, when the first ring gear structure adopts the common ring gear 36, the common ring gear 36 is provided with a first ring gear and a second ring gear, the first ring gear is engaged with the first planet gear 32, and the second ring gear is engaged with the second planet gear 72; correspondingly, the second ring gear structure adopts the second planet gear carrier 74, the second planet gear carrier 74 is locked, and the second planet gear 72 is mounted on the second planet gear carrier 74 so that the second planet gear 72 rotates around the second planet gear carrier 74, the inner side of the second planet gear 72 is engaged with the second sun gear 71, and the outer side of the second planet gear 72 is engaged with the common ring gear 36, and the common ring gear 36 is connected to the power output shaft 4. The rotation of the second planet gear 72 can drive the common ring gear 36 to rotate, so as to provide power to the power output shaft 4.

[0089] In one embodiment, if Figure 1-24 As shown, the power output shaft 4 is arranged inside the first motor 2 and the second motor 6, and is concentrically arranged with the first motor 2 and the second motor 6; alternatively, the power output shaft 4 is arranged outside the first motor 2 and the second motor 6, and the power output shaft 4 is connected to the first planetary gear 3 and the second planetary gear 7 through the transmission assembly 8.

[0090] As an example, the power take-off shaft 4 has two arrangement structures:

[0091] The first arrangement structure, such as Figure 1-12 As shown, the power take-off shaft 4 is arranged concentrically within the first motor 2 and the second motor 6, and is connected to the power take-off shaft 4 via the first planetary gear 3 and the second planetary gear 7 to provide power to the power take-off shaft 4. This arrangement can be compact and save layout space. The main application scenario is a car, which requires low torque, so the power take-off shaft 4 does not need to be too thick, which can meet the installation requirements of the power take-off shaft 4 passing through the first motor 2 and the second motor 6.

[0092] The second arrangement structure, such as Figure 13-24 As shown, the power take-off shaft 4 is arranged outside the first motor 2 and the second motor 6. Specifically, the power take-off shaft 4 is arranged radially outward from the first motor 2 and the second motor 6 and arranged parallel to the axial direction of the first motor 2 and the second motor 6. The power take-off shaft 4 is connected to the first planetary gear 3 and the second planetary gear 7 via the transmission assembly 8. The first planetary gear 3, the second planetary gear 7, and the transmission assembly 8 provide power to the power take-off shaft 4. This arrangement allows for a self-contained structure, eliminating the need for a specially designed hybrid transmission and saving manufacturing costs. The main application scenarios are off-road vehicles and pickup trucks. Due to the high torque required by off-road vehicles and pickup trucks, the power take-off shaft 4 needs to be thicker to ensure strength, making it suitable for placement on the outside.

[0093] In one embodiment, if Figure 13 、 Figure 15 、 Figure 17 、 Figure 19 、 Figure 21 and Figure 23 As shown, the transmission assembly 8 includes a third output gear 81 and a transfer gear 82 . The transfer gear 82 is arranged on the ring gear carrier 35 of the first planetary gear 3 , and the third output gear 81 is arranged on the power output shaft 4 . The third output gear 81 is meshed with the transfer gear 82 .

[0094] As an example, the first structural form of the transmission assembly 8 is introduced, which specifically includes a third output gear 81 and a transfer gear 82. During installation, the second ring gear 73 of the second planetary row 7 is first locked to play a supporting role; the transfer gear 82 is arranged on the ring gear frame 35 of the first planetary row 3, and the third output gear 81 is arranged on the power output shaft 4. The third output gear 81 is meshed with the transfer gear 82. In this structure, power is transmitted to the transfer gear 82, and the third output gear 81 is driven to rotate by the transfer gear 82, so as to drive the power output shaft 4 to rotate.

[0095] In one embodiment, if Figure 14 、 Figure 16 、 Figure 18 、 Figure 20 、 Figure 22 and Figure 24 As shown, the transmission assembly 8 includes a third output gear 81 and a ring gear hub 83 ; the ring gear hub 83 is disposed on the common ring gear 36 of the first planetary gear set 3 , and the third output gear 81 is meshed with the ring gear hub 83 .

[0096] As an example, a second structural form of the transmission assembly 8 is introduced, which specifically includes a third output gear 81 and a ring gear hub 83. During installation, the second planetary gear carrier 74 of the second planetary row 7 is first locked to play a supporting role; the second planetary gear 72 is installed on the second planetary gear carrier 74; the ring gear hub 83 is arranged on the common ring gear 36 of the first planetary row 3; the third output gear 81 is arranged on the power output shaft 4, and the third output gear 81 is engaged with the ring gear hub 83. In this structure, power is transmitted to the common ring gear 36, which drives the ring gear hub 83 to rotate through the common ring gear 36, and the ring gear hub 83 drives the third output gear 81 to rotate, thereby driving the power output shaft 4 to rotate.

[0097] In one embodiment, if Figure 1-25 As shown, the hybrid system also includes an output gear 9 and a coupling device 10; the output shaft of the engine 1 is connected to the output gear 9 through the coupling device 10, and the output gear 9 is transmission-connected to the first planetary gear 3; the coupling device 10 is used to control the power on and off between the engine 1 and the power output shaft 4.

[0098] As an example, the hybrid system further includes an output gear 9 and a coupling device 10. During installation, the output shaft of the engine 1 is connected to the output gear 9 via the coupling device 10, and the output gear 9 is connected to the first planetary gear set 3. In this arrangement, the power provided by the engine 1 drives the output gear 9 to rotate via the coupling device 10, and the output gear 9 drives the first planetary gear set 3 to rotate, thereby providing power to the first motor 2 and the power output shaft 4. Specifically, controlling the engagement or disengagement of the coupling device 10 can control whether the output shaft of the engine 1 is linked or disconnected with the output gear 9, that is, whether the power between the engine 1 and the power output shaft 4 is connected or disconnected, thereby switching the operating state of the engine 1 to achieve switching the operating mode of the hybrid system. The coupling device 10 can be a clutch or a synchronizer.

[0099] As an example, when the coupling device 10 is engaged, the power output by the engine 1 can be transmitted to the first planetary gear 3 through the output gear 9, and then transmitted to the power output shaft 4 through the first planetary gear 3 to realize engine drive, specifically including the following modes: the first mode is to control the coupling device 10 to engage, the locking mechanism 5 to lock, the engine 1 to work, the first motor 2 to stop working, and the second motor 6 to stop working, so that the hybrid system enters the engine direct drive mode; the second mode is to control the coupling device 10 to engage, the locking mechanism 5 to open, the engine 1 to work, the first motor 2 to generate electricity, and the second motor 6 to work, so that the hybrid system enters the power split mode; the third mode is to control the coupling device 10 to engage, the locking mechanism 5 to lock, the engine 1 to work, and the second motor 6 to work, so that the hybrid system enters the parallel mode.

[0100] As another example, when the engagement device 10 is disengaged, the power output by the engine 1 cannot be transmitted to the first planetary gear set 3 via the output gear 9. In this case, the power output by the first motor 2 can be transmitted to the power output shaft 4 via the first planetary gear set 3, and / or the power output by the second motor 6 can be transmitted to the power output shaft 4 via the second planetary gear set 7. In this example, when the engagement device 10 is disengaged and the locking mechanism 5 is opened, the first motor 2 and the second motor 6 can be controlled to drive, so that the hybrid system enters a pure electric mode to achieve motor drive; alternatively, either the first motor 2 or the second motor 6 can be controlled to operate while the other is not operated, so that the hybrid system enters an energy recovery mode.

[0101] The hybrid system architecture in this example is rationally designed and can incorporate power split mode, engine direct drive mode, parallel mode, pure electric mode, and energy recovery mode, ensuring efficient operation of the hybrid system in all operating conditions to improve economy.

[0102] In one embodiment, if Figure 1-25As shown, the hybrid system further includes a gear lock 11 , which is mounted on the output gear 9 and is used to switch between driving by the engine 1 or driving by the first motor 2 .

[0103] As an example, the hybrid system also includes a gear lock 11. When installed, gear lock 11 is attached to output gear 9. Gear lock 11 has an open state and a locked state. When in the open state, output gear 9 can rotate freely. When in the locked state, output gear 9 is locked and cannot rotate. By adjusting the open or locked state of gear lock 11, the degrees of freedom of the first planetary gear set 3 can be controlled. When open, there are two degrees of freedom, and when locked, there is one degree of freedom. When the gear lock 11 is open and the locking mechanism 5 is also open, and the first motor 2 is working, since the first planetary row 3 has two degrees of freedom, the sun gear, planet carrier and ring gear of the first planetary row 3 can all rotate freely, so the power output of the first motor 2 cannot drive the power output shaft 4 to rotate; and when the gear lock 11 is locked and the locking mechanism 5 is open and the first motor 2 is working, since the first planetary row 33 transmission-connected to the output gear 9 is also locked, the first planetary row 3 has only one degree of freedom. At this time, the power output of the first motor 2 can drive the power output shaft 4 to rotate via the sun gear, planet gears and ring gear of the first planetary row 3, thereby realizing a pure electric mode driven by the first motor 2.

[0104] In this example, when the gear lock 11 is open, the engine 1 participates in providing power to the power output shaft 4, so that the hybrid system switches between engine direct drive mode, power split mode, parallel mode and energy recovery mode; when the gear lock 11 is locked, the engine 1 does not participate in providing power to the power output shaft 4, so that the hybrid system switches between pure electric mode and energy recovery mode.

[0105] For example, the coupling device 10 is controlled to engage, the locking mechanism 5 is locked, the gear lock 11 is opened, the engine 1 is working, the first motor 2 is not working, and the second motor 6 is not working, so that the hybrid system enters the engine direct drive mode. At this time, the engine 1 provides power to drive the output gear 9 to rotate through the coupling device 10, and the output gear 9 drives the first planetary gear 3 to rotate, thereby providing power to the power output shaft 4.

[0106] For another example, the coupling device 10 is controlled to engage, the locking mechanism 5 is opened, the gear lock 11 is opened, the engine 1 is working, the first motor 2 generates electricity, and the second motor 6 is working, so that the hybrid system enters the power split mode. At this time, the engine 1 provides power to drive the output gear 9 to rotate through the coupling device 10, and the output gear 9 drives the first planetary gear 3 to rotate, thereby providing power to the first motor 2 and the power output shaft 4, so that the first motor 2 generates electricity; the power provided by the second motor 6 drives the second planetary gear 7 to rotate, and the second planetary gear 7 can directly provide power to the power output shaft 4, or it can be connected to the first planetary gear 3 as a whole to jointly provide power to the power output shaft 4.

[0107] For another example, the coupling device 10 is controlled to engage, the locking mechanism 5 is locked, the gear lock 11 is opened, the engine 1 is working, the first motor 2 is not working, and the second motor 6 is working, so that the hybrid power system enters the parallel mode. At this time, the engine 1 provides power to drive the output gear 9 to rotate through the coupling device 10, and the output gear 9 drives the first planetary gear 3 to rotate, thereby providing power to the power output shaft 4; the power provided by the second motor 6 drives the second planetary gear 7 to rotate, and the second planetary gear 7 can directly provide power to the power output shaft 4, or it can be connected to the first planetary gear 3 as a whole to jointly provide power to the power output shaft 4.

[0108] For another example, the control engagement device 10 is disconnected, the locking mechanism 5 is opened, the gear lock 11 is locked, the engine 1 does not work, the first motor 2 works, and the second motor 6 works, so that the hybrid system enters the pure electric mode. At this time, the first motor 2 and the second motor 6 are both in the driving state. The power provided by the first motor 2 drives the first planetary gear 3 to rotate and provide power to the power output shaft 4. In addition, the power provided by the second motor 6 drives the second planetary gear 7 to rotate. The second planetary gear 7 can directly provide power to the power output shaft 4, or it can be connected to the first planetary gear 3 as a whole to jointly provide power to the power output shaft 4.

[0109] For another example, the control engagement device 10 is disconnected, the locking mechanism 5 is opened, the gear lock 11 is opened, the engine 1 is not working, the first motor 2 is not working, and the second motor 6 is working, so that the hybrid system enters the energy recovery mode. The power provided by the second motor 6 drives the second planetary gear 7 to rotate. The second planetary gear 7 can directly provide power to the power output shaft 4, or it can be connected to the first planetary gear 3 as a whole to jointly provide power to the power output shaft 4.

[0110] Alternatively, the control coupling device 10 is disconnected, the locking mechanism 5 is opened, the gear lock 11 is locked, the engine 1 does not work, the first motor 2 works, and the second motor 6 does not work, so that the hybrid system enters the energy recovery mode. When the first motor 2 works, the power provided by the first motor 2 drives the first planetary gear 3 to rotate, thereby providing power to the power output shaft 4.

[0111] The hybrid system architecture in this example is rationally designed, capable of combining engine direct drive mode, power split mode, parallel mode, pure electric mode, and energy recovery mode, ensuring efficient operation of the hybrid system in all operating conditions to improve economy. The locking mechanism 5 is used to switch between power split mode and engine direct drive mode / parallel mode; the gear lock 11 is used to switch between drive by the first motor 2 and / or drive by the engine 1, enabling oil-to-fuel hybrid operation. The architecture combines power split and engine direct drive, selecting power split mode and pure electric mode at low speeds, and engine direct drive mode or parallel mode at medium and high speeds. This ensures efficient engine operation in all operating scenarios, improving economy. For example, in power split mode or pure electric mode, a high speed ratio for the first motor 2 can increase output torque and reduce acceleration time from 0 to 100 kilometers per hour. In engine direct drive mode or parallel mode, a low speed ratio for the second motor 6 can increase maximum vehicle speed.

[0112] In one embodiment, if Figure 1-24 As shown, the first planetary row 3 includes a first planetary carrier 33 and a first planetary carrier gear 34 provided on the first planetary carrier 33, the first planetary carrier gear 34 includes a first input gear 341; the output gear 9 includes a first output gear 91, the first output gear 91 is connected to the output shaft of the engine 1 through the coupling device 10, and the first output gear 91 is engaged with the first input gear 341; alternatively, the first planetary row 3 includes a first planetary carrier 33 and a first planetary carrier gear 34 provided on the first planetary carrier 33, the first planetary carrier gear 34 includes a first input gear 341 and a second input gear 342; the output gear 9 includes a first output gear 91 and a second output gear 92, the first output gear 91 is engaged with the first input gear 341, and the second output gear 92 is engaged with the second input gear 342, the coupling device 10 is provided between the first output gear 91 and the second output gear 92, is connected to the output shaft of the engine 1, and is used to be coupled with the first output gear 91 or the second output gear 92, or not coupled with both.

[0113] As an example, the first planetary carrier gear 34 has two structural forms, that is, the first planetary row 3 has two structural forms; and the output gear 9 has two structural forms.

[0114] The first structural form, such as Figure 1 、 Figure 3 、 Figure 5 、 Figure 7 、 Figure 9 、 Figure 11 、 Figure 13 、 Figure 15 、 Figure 17 、 Figure 19 、 Figure 21and Figure 23As shown, the first planetary gear 3 includes a first planetary carrier 33 and a first planetary carrier gear 34 provided on the first planetary carrier 33. The first planetary carrier gear 34 includes a first input gear 341. During installation, the first sun gear 31 is sleeved on the output shaft of the first motor 2, and the first planetary gear 32 is sleeved on the first planetary carrier 33. The inner ring of the first planetary gear 32 is meshed with the first sun gear 31, and the outer ring of the first planetary gear 32 is meshed with the first ring carrier structure; the first input gear 341 is provided on the first planetary carrier 33, and the first input gear 341 is meshed with the output gear 9 of the engine 1 (specifically, the first output gear 91). The first ring carrier structure is connected to the second planetary gear 7 and is used to connect to the power output shaft 4. In this way, the power provided by the engine 1 drives the output gear 9 rotates, the output gear 9 drives the first input gear 341 to rotate, the first input gear 341 drives the first planetary carrier 33 to rotate, the first planetary carrier 33 drives the first planetary gear 32 to rotate, and can drive the first ring frame structure and the first sun gear 31 to rotate at the same time, thereby providing power to the power output shaft 4 and the first motor 2; the first motor 2 can also provide power, by driving the first sun gear 31 to rotate through its own output shaft, the first sun gear 31 drives the first planetary gear 32 to rotate, and then drives the first ring frame structure to rotate, thereby providing power to the power output shaft 4; the power provided by the second motor 6 can directly provide power to the power output shaft 4 through the second planetary row 7, or can be connected to the first planetary row 3 as a whole to jointly provide power to the power output shaft 4. Accordingly, the output gear 9 includes a first output gear 91. During installation, the first output gear 91 is meshed with the first input gear 341 of the first planetary gear set 3. The coupling device 10 is configured to engage with the first output gear 91, thereby connecting the output shaft of the engine 1 to the first output gear 91 via the coupling device 10. The first output gear 91 meshes with the first planetary carrier gear 34 of the first planetary gear set 3, specifically the first input gear 341. In this configuration, the power provided by the engine 1 can be driven to rotate the first output gear 91 via the coupling device 10, which in turn drives the first planetary carrier gear 34 of the first planetary gear set 3 to rotate, thereby providing power to the first motor 2 and the power output shaft 4. By adjusting the engagement or disengagement of the coupling device 10, the output shaft of the engine 1 can be linked or disconnected with the first output gear 91, i.e., the engine 1 can participate or not participate in providing power to the power output shaft 4. The gear lock 11 is installed on the first output gear 91. By adjusting the opening or locking of the gear lock 11, the first output gear 91 can be controlled to drive or not drive the first input gear 341 to rotate, and the degree of freedom of the first planetary gear 3 can be controlled. When opened, there are two degrees of freedom, and when locked, there is one degree of freedom.When the gear lock 11 is open and the locking mechanism 5 is also open, and the first motor 2 is working, since the first planetary row 3 has two degrees of freedom, the sun gear, planet carrier and ring gear of the first planetary row 3 can all rotate freely, so the power output of the first motor 2 cannot drive the power output shaft 4 to rotate; and when the gear lock 11 is locked and the locking mechanism 5 is open and the first motor 2 is working, since the first planetary row 33 transmission-connected to the output gear 9 is also locked, the first planetary row 3 has only one degree of freedom. At this time, the power output of the first motor 2 can drive the power output shaft 4 to rotate via the sun gear, planet gears and ring gear of the first planetary row 3, thereby realizing a pure electric mode driven by the first motor 2.

[0115] The second structural form, such as Figure 2 、 Figure 4 、 Figure 6 、 Figure 8 、 Figure 10 、 Figure 12 、 Figure 14 、 Figure 16 、 Figure 18 、 Figure 20 、 Figure 22 and Figure 24As shown, the first planetary row 3 includes a first planetary carrier 33 and a first planetary carrier gear 34 provided on the first planetary carrier 33, and the first planetary carrier gear 34 includes a first input gear 341 and a second input gear 342. During installation, the first sun gear 31 is sleeved on the output shaft of the first motor 2, and the first planetary gear 32 is sleeved on the first planetary carrier 33. The inner ring of the first planetary gear 32 is meshed with the first sun gear 31, and the outer ring of the first planetary gear 32 is meshed with the first ring frame structure; the first input gear 341 and the second input gear 342 are sequentially provided on the first planetary carrier 33, and the first input gear 341 and the second input gear 342 are respectively meshed with the first output gear 91 and the second output gear 92 of the engine 1. The first ring frame structure is connected to the second planetary row 7 and is used to connect to the power output shaft 4; in this way, when the power provided by the engine 1 drives the output gear 9 to rotate, and the output gear 9 drives the first input gear 341 to rotate, the first input gear 341 drives the first planetary carrier 33 to rotate, and the first planetary carrier 33 drives When the first planetary gear 32 is driven to rotate, the first carrier structure and the first sun gear 31 can be driven to rotate simultaneously, thereby providing power to the power output shaft 4 and the first motor 2, which is a first gear structure; when the power provided by the engine 1 drives the output gear 9 to rotate, and the output gear 9 drives the second input gear 342 to rotate, the second input gear 342 drives the first planetary carrier 33 to rotate, and the first planetary carrier 33 drives the first planetary gear 32 to rotate, which can drive the first carrier structure and the first sun gear 31 to rotate simultaneously, thereby providing power to the power output shaft 4 and the first motor 2, which is a second gear structure; the first motor 2 can also provide power by driving the first sun gear 31 to rotate through its own output shaft, and the first sun gear 31 drives the first planetary gear 32 to rotate, which can drive the first carrier structure to rotate, thereby providing power to the power output shaft 4; the power provided by the second motor 6 can directly provide power to the power output shaft 4 through the second planetary row 7, or it can be connected to the first planetary row 3 as a whole to jointly provide power to the power output shaft 4.Correspondingly, the output gear 9 includes a first output gear 91 and a second output gear 92. When installed, the first output gear 91 and the second output gear 92 are respectively engaged with the first planetary carrier gear 34 of the first planetary row 3, specifically, the first output gear 91 is engaged with the first input gear 341 of the first planetary row 3, and the second output gear 92 is engaged with the second input gear 342 of the first planetary row 3. The engagement device 10 is arranged between the first output gear 91 and the second output gear 92, and is used to engage with the first output gear 91 or the second output gear 92. In this way, when the engagement device 10 is combined with the first output gear 91, the power provided by the engine 1 can be driven by the engagement device 10. The first output gear 91 rotates, driving the first input gear 341 of the first planetary gear 3 to rotate, thereby providing power to the first motor 2 and the power output shaft 4. This is a first gear structure. When the coupling device 10 is engaged with the second output gear 92, the power provided by the engine 1 can be driven by the coupling device 10 to rotate the second output gear 92, which in turn drives the second input gear 342 of the first planetary gear 3 to rotate, thereby providing power to the first motor 2 and the power output shaft 4. This is a second gear structure. When the coupling device 10 is disengaged, the power provided by the engine 1 is blocked and cannot provide power to the first motor 2 and the power output shaft 4. This is a neutral gear. By adjusting the engagement or disengagement of the coupling device 10, the output shaft of the engine 1 can be linked or disconnected with the first output gear 91 or the second output gear 92, that is, the engine 1 can participate or not participate in providing power to the power output shaft 4. The gear lock 11 is mounted on the first output gear 91 or the second output gear 92. By adjusting whether the gear lock 11 is unlocked or locked, the first output gear 91 can be controlled to drive or not drive the first input gear 341, or the second output gear 92 can be controlled to drive or not drive the second input gear 342. This can control the degrees of freedom of the first planetary gear set 3: two degrees of freedom when unlocked, and one degree of freedom when locked. When the gear lock 11 is unlocked and the locking mechanism 5 is also unlocked, and the first motor 2 is operating, the first planetary gear set 3 has two degrees of freedom. The sun gear, planet carrier, and ring gear of the first planetary gear set 3 all rotate freely, so the power output of the first motor 2 cannot drive the power output shaft 4. When the gear lock 11 is locked and the locking mechanism 5 is unlocked, and the first motor 2 is operating, the first planetary gear set 3 has only one degree of freedom because the first planet carrier 33, which is transmission-connected to the output gear 9, is also locked. At this time, the power output of the first motor 2 can drive the power output shaft 4 via the sun gear, planet gears, and ring gear of the first planetary gear set 3, achieving a pure electric mode driven by the first motor 2.

[0116] Among them, the hybrid system also includes an engine torque reduction. When installed, the engine torque reduction is set on the output shaft of the engine 1, which can be used to reduce the speed of the engine 1 and increase the output torque and reduce the load inertia, thereby improving fuel economy.

[0117] In one embodiment, if Figure 1-24 As shown, the coupling device 10 can adopt a mechanical clutch or an electromagnetic clutch, both of which can be used to realize the transmission between the output shaft of the engine 1 and the first output gear 91; the coupling device 10 can adopt an electromagnetic clutch or a synchronizer, both of which can be used to realize the transmission between the output shaft of the engine 1 and the first output gear 91 or the second output gear 92, so as to meet the adjustment between the two gears and the neutral gear.

[0118] The present invention provides a vehicle, such as Figure 1-24 As shown, it includes a front-wheel drive differential 14, a rear-wheel drive differential 15 and the hybrid power system in the above embodiment; the front end of the power output shaft 4 is connected to the front-wheel drive differential 14, and the rear end of the power output shaft 4 is connected to the rear-wheel drive differential 15; the power output shaft 4 is connected to the first planetary gear 3.

[0119] As an example, a vehicle includes a front-drive differential 14, a rear-drive differential 15, and a hybrid powertrain. The hybrid powertrain is applied to the vehicle and can also be applied to other products or transportation equipment. The hybrid powertrain includes an engine 1, a first motor 2, a first planetary gear set 3, a power take-off shaft 4, and a locking mechanism 5. During installation, the engine 1 is connected to the first motor 2 via the first planetary gear set 3, which is in turn connected to the power take-off shaft 4. This arrangement allows the engine 1 to drive the first motor 2 (e.g., a generator) to generate electricity while also driving the power take-off shaft 4 via the first planetary gear set 3. The locking mechanism 5 is connected to the first motor 2. By adjusting whether the locking mechanism 5 is open or locked, the output shaft of the first motor 2 can be linked or de-linked with the first planetary gear set 3, thereby switching between power-split mode and engine-direct drive mode. Specifically, the locking mechanism 5 is locked, the engine 1 is operated, and the first motor 2 is deactivated, thereby switching the hybrid powertrain into engine-direct drive mode. Alternatively, the locking mechanism 5 is opened, the engine 1 is operated, and the first motor 2 is controlled to generate electricity, thereby switching the hybrid powertrain into power-split mode. The hybrid system architecture in this example is reasonably designed and can have both a power split mode and an engine direct drive mode, ensuring that the hybrid system operates efficiently in all operating conditions to improve economy.

[0120] In this example, the front end of the power output shaft 4 is connected to the front-wheel drive differential 14, and the rear end of the power output shaft 4 is connected to the rear-wheel drive differential 15; the power output shaft 4 is connected to the first planetary gear set 3; the engine 1, the first motor 2 and the second motor 6 are arranged in this way to cooperate with each other, so that the hybrid system forms four power modes of engine direct drive mode, power split mode, parallel mode and pure electric mode to provide power to the power output shaft 4, and the power output shaft 4 can drive the front and rear wheels to rotate at the same time to form a four-wheel drive mode; this arrangement makes each of the four power modes correspond to a four-wheel drive mode, that is, the hybrid system forms four layout modes, and a set of electric drive and electronic control system to realize four modes; the architecture is simple, the cost is low, and it can be hybridized with oil and plug-in hybrid; it meets the power, economy and other requirements of the high-end market A-class cars and off-road pickup trucks.

[0121] The front-drive differential 14 and rear-drive differential 15 are key components in a hybrid system. Their primary function is to coordinate the rotational speeds of the vehicle's front and rear wheels, preventing slippage during cornering. Specifically, when a vehicle is driving, due to the outer wheel slipping and the inner wheel spinning, two opposing additional forces are generated on the two drive wheels, resulting in different wheel speeds. The front-drive differential 14 and rear-drive differential 15 regulate the wheel speeds to eliminate this imbalance, ensuring stable and safe vehicle operation.

[0122] In one embodiment, if Figure 1-4 、 Figure 9-16 and Figure 21-24 As shown, the vehicle also includes a front drive clutch 12 and / or a rear drive clutch 13; the front drive clutch 12 is arranged between the front end of the power output shaft 4 and the front drive differential 14; the rear drive clutch 13 is arranged between the rear end of the power output shaft 4 and the rear drive differential 15.

[0123] As an example, the vehicle further includes a front drive clutch 12 and / or a rear drive clutch 13 , which specifically include three arrangement structures.

[0124] like Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 21 、 Figure 22 、 Figure 23 and Figure 24 As shown, the first arrangement structure only has a front-wheel drive clutch 12, which is arranged between the front end of the power output shaft 4 and the front-wheel drive differential 14; by adjusting the engagement or disengagement of the front-wheel drive clutch 12, in cooperation with the front-wheel drive differential 14, the front wheels can be controlled to participate in the drive or not; when the front-wheel drive clutch 12 is disengaged, a rear-wheel drive mode is formed; when the front-wheel drive clutch 12 is engaged, a four-wheel drive mode is formed.

[0125] The second arrangement structure only has a rear-wheel drive clutch 13, which is arranged between the rear end of the power output shaft 4 and the rear-wheel drive differential 15. By cooperating with the rear-wheel drive differential 15 to adjust the engagement or disconnection of the rear-wheel drive clutch 13, the rear wheels can be controlled to participate in the drive or not. When the rear-wheel drive clutch 13 is disconnected, a front-wheel drive mode is formed; when the rear-wheel drive clutch 13 is engaged, a four-wheel drive mode is formed. The structure with only the rear-wheel drive clutch 13 is similar to the structure with only the front-wheel drive clutch 12, and they will not be repeated here.

[0126] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 13 、 Figure 14 、 Figure 15 and Figure 16 As shown, the third arrangement structure has both a front-wheel drive clutch 12 and a rear-wheel drive clutch 13. The front-wheel drive clutch 12 is arranged between the front end of the power output shaft 4 and the front-wheel drive differential 14; the rear-wheel drive clutch 13 is arranged between the rear end of the power output shaft 4 and the rear-wheel drive differential 15. By adjusting the front-wheel drive clutch 12 to be engaged and the rear-wheel drive clutch 13 to be engaged, the four-wheel drive mode can be achieved through both front-wheel drive and rear-wheel drive; by adjusting the front-wheel drive clutch 12 to be disconnected and the rear-wheel drive clutch 13 to be engaged, the rear-wheel drive mode can be achieved through rear-wheel drive; by adjusting the front-wheel drive clutch 12 to be engaged and the rear-wheel drive clutch 13 to be disconnected, the front-wheel drive mode can be achieved through front-wheel drive.

[0127] The engine 1, the first motor 2 and the second motor 6 cooperate to combine the hybrid power system into four power modes: engine direct drive mode, power split mode, parallel mode and pure electric mode to provide power to the power output shaft 4. The power output shaft 4 can only drive the front wheels to rotate, forming a front-wheel drive mode; it can also only drive the rear wheels to rotate, forming a rear-wheel drive mode; it can also drive the front and rear wheels to rotate at the same time, forming a four-wheel drive mode; this arrangement enables each of the four power modes to correspond to three drive modes, that is, the hybrid power system forms twelve layout modes, and a set of electric drive and electronic control system realizes the mutual switching of front-wheel drive, rear-wheel drive and four-wheel drive; the architecture is simple, the cost is low, it can be hybridized and plug-in hybrid, and it meets the power, economy and other needs of high-end A-class cars and off-road pickup trucks in the market.

[0128] The present invention provides a vehicle control method. Figure 1-25 As shown, it is used in vehicles, including:

[0129] Determine target power mode;

[0130] If the target power mode is the engine direct drive mode, the locking mechanism 5 is controlled to be locked, the engine 1 is running, and the first motor 2 is not running;

[0131] If the target power mode is the power split mode, the locking mechanism 5 is controlled to be opened, the engine 1 is operated, and the first motor 2 is controlled to generate electricity.

[0132] As an example, the controller may obtain a power mode instruction and determine a target power mode based on the power mode instruction, so as to control the operation of the hybrid system according to the target power mode. Specifically, when the hybrid system is the hybrid system described above including the engine 1, the first motor 2, the first planetary gear 3, the power output shaft 4, and the locking mechanism 5, if the target power mode is the engine direct drive mode, the locking mechanism 5 is locked, i.e., the output shaft of the first motor 2 is locked, and the engine 1 is controlled to operate. The engine 1 cannot drive the first motor 2 to rotate via the first planetary gear 3, i.e., the first motor 2 is not operated. At this time, the engine 1 can drive the power output shaft 4 to rotate via the first planetary gear 3, so that the hybrid system enters the engine direct drive mode. If the target power mode is the power split mode, the locking mechanism 5 is controlled to be open, i.e., the output shaft of the first motor 2 can rotate freely, and the engine 1 is controlled to operate. The engine 1 can drive the first motor 2 to rotate via the first planetary gear 3, so that the first motor 2 generates electricity. The engine 1 can also drive the power output shaft 4 to rotate via the first planetary gear 3, and the hybrid system enters the power split mode. The hybrid system architecture in this example is reasonably designed and can have both a power split mode and an engine direct drive mode, ensuring that the hybrid system operates efficiently in all operating conditions to improve economy.

[0133] In one embodiment, if Figure 1-25 As shown, the vehicle control method further includes:

[0134] If the target power mode is the engine direct drive mode, the second motor 6 is also controlled not to work;

[0135] If the target power mode is the power split mode, the second motor 6 is also controlled to operate;

[0136] If the target power mode is the parallel mode, the locking mechanism 5 is locked, the engine 1 is controlled to operate, the first motor 2 is not operated, and the second motor 6 is operated.

[0137] As an example, the controller may obtain a power mode command and, based on the power mode command, determine a target power mode, thereby controlling the hybrid system to operate according to the target power mode. Specifically, when the hybrid system is the aforementioned hybrid system comprising the engine 1, the first motor 2, the first planetary gear set 3, the power take-off shaft 4, the locking mechanism 5, the second motor 6, and the second planetary gear set 7, if the target power mode is the engine direct drive mode, the locking mechanism 5 is controlled to be locked, the engine 1 is operated, the first motor 2 is deactivated, and the second motor 6 is deactivated. The engine 1 drives the power take-off shaft 4 to rotate via the first planetary gear set 3, thereby placing the hybrid system in the engine direct drive mode. Alternatively, if the target power mode is the power split mode, the locking mechanism 5 is controlled to be unlocked, the engine 1 is operated, and the engine 1 drives the first motor 2 to generate electricity via the first planetary gear set 3. The engine 1 can also drive the power take-off shaft 4 to rotate via the first planetary gear set 3. The second motor 6 is controlled to be operated, and the second motor 6 drives the power take-off shaft 4 to rotate via the second planetary gear set 7, thereby placing the hybrid system in the power split mode. Alternatively, if the target power mode is parallel mode, locking mechanism 5 is controlled to lock, engine 1 is operated, first motor 2 is deactivated, and second motor 6 is controlled to operate, so that engine 1 drives power output shaft 4 via first planetary gear set 3, and second motor 6 drives power output shaft 4 via second planetary gear set 7, thereby placing the hybrid system in parallel mode. The hybrid system architecture in this example is rationally designed, capable of operating in power split mode, engine direct drive mode, and parallel mode, ensuring efficient operation of the hybrid system under all operating conditions to improve economy.

[0138] In one embodiment, if Figure 1-25 As shown, the vehicle control method further includes:

[0139] If the target power mode is the engine direct drive mode, the engagement device 10 is also controlled to engage and the gear lock 11 is opened;

[0140] If the target power mode is the power split mode, the engagement device 10 is also controlled to engage and the gear lock 11 is opened;

[0141] If the target power mode is the parallel mode, the engagement device 10 is also controlled to engage and the gear lock 11 is opened;

[0142] If the target power mode is the pure electric mode, the engaging device 10 is controlled to be disengaged, the gear lock 11 is locked, the locking mechanism 5 is opened, the first motor 2 is operated, and the second motor 6 is operated;

[0143] If the target power mode is the energy recovery mode, the control coupling device 10 is disconnected, the gear lock 11 is opened, the locking mechanism 5 is opened, the first motor 2 does not work, and the second motor 6 works; or, the control coupling device 10 is disconnected, the gear lock 11 is locked, the locking mechanism 5 is opened, the first motor 2 works, and the second motor 6 does not work.

[0144] As an example, the controller can obtain a power mode command and, based on the power mode command, determine a target power mode, thereby controlling the operation of the hybrid system according to the target power mode. Specifically, when the hybrid system is the hybrid system described above, including the engine 1, the first motor 2, the first planetary gear 3, the power output shaft 4, the locking mechanism 5, the second motor 6, the second planetary gear 7, the engagement device 10, and the gear lock 11, a power mode command is issued based on the actual vehicle speed. The controller responds to the power mode command to cause the hybrid system to enter the target power mode, which can be an engine direct drive mode, a power split mode, a parallel mode, a pure electric mode, or an energy recovery mode. The power mode command is a command for switching between different power modes. The power mode command can be a command for the user to actively control the entry into a certain power mode. During intelligent driving, it may also be a command for switching into a certain power mode according to actual vehicle conditions. The command can be determined autonomously based on actual conditions.

[0145] The coupling device 10 is controlled to engage, the locking mechanism 5 is locked, the gear lock 11 is opened, the engine 1 is working, the first motor 2 is not working, the second motor 6 is not working, and the engine 1 provides power to drive the output gear 9 to rotate through the coupling device 10, the output gear 9 drives the first planetary gear 3 to rotate, and the first planetary gear 3 drives the power output shaft 4 to rotate, so that the hybrid system enters the engine direct drive mode.

[0146] The control coupling device 10 is engaged, the locking mechanism 5 is opened, the gear lock 11 is opened, the engine 1 is working, the first motor 2 generates electricity, and the second motor 6 is working. The engine 1 provides power to drive the output gear 9 to rotate through the coupling device 10, and the output gear 9 drives the first planetary gear 3 to rotate, thereby driving the first motor 2 to generate electricity; the power provided by the second motor 6 drives the second planetary gear 7 to rotate, and the second planetary gear 7 can directly drive the power output shaft 4 to rotate, or it can be connected to the first planetary gear 3 as a whole and then drive the power output shaft 4 to rotate together to enable the hybrid system to enter the power split mode.

[0147] The control coupling device 10 is engaged, the locking mechanism 5 is locked, the gear lock 11 is opened, the engine 1 is working, the first motor 2 is not working, and the second motor 6 is working. The engine 1 provides power to drive the output gear 9 to rotate through the coupling device 10, and the output gear 9 drives the first planetary gear 3 to rotate, thereby driving the power output shaft 4 to rotate; the power provided by the second motor 6 drives the second planetary gear 7 to rotate. The second planetary gear 7 can directly drive the power output shaft 4 to rotate, or it can be connected to the first planetary gear 3 as a whole and drive the power output shaft 4 to rotate together, so that the hybrid power system enters the parallel mode.

[0148] The control engagement device 10 is disengaged, the locking mechanism 5 is opened, the gear lock 11 is locked, the engine 1 does not work, the first motor 2 is working (driving), and the second motor 6 is working. The power provided by the first motor 2 drives the first planetary gear 3 to rotate, and the first planetary gear 3 drives the power output shaft 4 to rotate. In addition, the power provided by the second motor 6 drives the second planetary gear 7 to rotate. The second planetary gear 7 can directly drive the power output shaft 4 to rotate, or it can be connected to the first planetary gear 3 as a whole and then drive the power output shaft 4 to rotate together, so that the hybrid power system enters the pure electric mode.

[0149] The engaging device 10 is controlled to be disengaged, the locking mechanism 5 is opened, the gear lock 11 is opened, the engine 1 is not operated, the first motor 2 is not operated, and the second motor 6 is operated, so that the hybrid system enters the energy recovery mode. Alternatively, the engaging device 10 is controlled to be disengaged, the locking mechanism 5 is opened, the gear lock 11 is locked, the engine 1 is not operated, the first motor 2 is operated, and the second motor 6 is not operated, so that the hybrid system enters the energy recovery mode.

[0150] For example, when the hybrid system is a two-axle four-wheel drive system luxury car or a three-axle four-wheel drive system off-road or pickup truck, the first gear engagement device (mechanical clutch or electromagnetic clutch) can be replaced with a second gear engagement device (electromagnetic clutch or engine synchronizer); the front drive clutch 12 and the rear drive clutch 13 are optional to change the drive mode.

[0151] As an example, the switching from the engine direct drive mode to the power split mode can be achieved by controlling the state switching of the locking mechanism 5 and the coupling device 10. The working process is as follows: first, the coupling device 10 is disconnected, and the speed of the first motor 2 is independent and decoupled from the first planetary gear 3. Because the planetary gear system has two degrees of freedom, the first planetary gear 3 is powered by the second motor 6 at this time; at this time, the deceleration of the first motor 2 tends to zero, and the locking mechanism 5 is used to lock the output shaft of the first motor 2, and the speed of the engine 1 is adjusted to engage the coupling device 10, and the second motor 6 is disconnected to complete the switching from the power split mode to the engine direct drive mode. At this time, the engine 1 provides power to drive the output gear 9 to rotate through the coupling device 10, and the output gear 9 drives the first planetary gear 3 to rotate, thereby providing power to the power output shaft 4. This power mode is the engine direct drive mode.

[0152] As an example, the switching from the engine direct drive mode to the power split mode can be achieved by controlling the state switching of the locking mechanism 5 and the coupling device 10. The working process is as follows: first, the second motor 6 is operated to switch the engine direct drive mode to the parallel mode. The engine 1 provides power to drive the output gear 9 to rotate through the coupling device 10, and the output gear 9 drives the first planetary gear 3 to rotate, thereby providing power to the power output shaft 4; the power provided by the second motor 6 drives the second planetary gear 7 to rotate, and the second planetary gear 7 drives the first planetary gear 3 to rotate, thereby providing power to the power output shaft 4. This power mode is the parallel mode; then the coupling device 10 is disconnected, the locking mechanism 5 is opened, and the engine is in parallel mode. The speed of the engine 1 is adjusted, and then the coupling device 10 is engaged to complete the switching from the engine direct drive mode to the power split mode. The engine 1 provides power to drive the output gear 9 to rotate through the coupling device 10, and the output gear 9 drives the first planetary gear 3 to rotate, thereby providing power to the first motor 2 and the power output shaft 4; the power provided by the first motor 2 drives the first planetary gear 3 to rotate, thereby providing power to the power output shaft 4; the power provided by the second motor 6 drives the second planetary gear 7 to rotate, and the second planetary gear 7 can directly drive the power output shaft 4 to rotate, or it can be connected with the first planetary gear 3 as a whole and drive the power output shaft 4 to rotate together. This power mode is the power split mode.

[0153] In one embodiment, if Figure 1-25 As shown, the vehicle control method further includes:

[0154] Determine the target drive mode;

[0155] If the target drive mode is the front drive mode, the front drive clutch 12 is engaged and the rear drive clutch 13 is disengaged, or there is no front drive clutch 12 and the rear drive clutch 13 is disengaged;

[0156] If the target drive mode is the rear-wheel drive mode, the rear-wheel drive clutch 13 is engaged and the front-wheel drive clutch 12 is disengaged, or there is no rear-wheel drive clutch 13 and the front-wheel drive clutch 12 is disengaged;

[0157] If the target drive mode is the four-wheel drive mode, the front drive clutch 12 and the rear drive clutch 13 are not engaged, or the front drive clutch 12 and / or the rear drive clutch 13 are both engaged.

[0158] As an example, a drive mode switching instruction is issued according to actual needs, and the controller controls the front-wheel drive clutch 12 and the rear-wheel drive clutch 13 to operate so that the hybrid system enters the target drive mode, which is the front-wheel drive mode, the rear-wheel drive mode or the four-wheel drive mode; wherein the drive mode switching instruction is an instruction for switching between different drive modes, and the drive mode switching instruction can be an instruction for the user to actively control the entry into a certain drive mode. During the intelligent driving process, it may also be an instruction for switching into a certain drive mode according to the actual vehicle situation, which can be determined independently according to the actual situation.

[0159] Among them, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 13 、 Figure 14 、 Figure 15 and Figure 16 As shown, the front-wheel drive mode is a mode in which the front-wheel drive clutch 12 is engaged and the rear-wheel drive clutch 13 is disengaged. In this mode, the front-wheel drive clutch 12 is adjusted to be engaged and the rear-wheel drive clutch 13 is disengaged, and the power output shaft 4 can drive the front wheels to rotate, thereby achieving front-wheel drive. Alternatively, the front-wheel drive mode is a mode in which the front-wheel drive clutch 12 is not present and the rear-wheel drive clutch 13 is disengaged. In this mode, the front-wheel drive clutch 12 is not present and the rear-wheel drive clutch 13 is adjusted to be disengaged, and the power output shaft 4 can directly drive the front wheels to rotate, thereby achieving front-wheel drive.

[0160] Among them, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 13 、 Figure 14 、 Figure 15 and Figure 16 As shown, the rear-wheel drive mode is a mode in which the rear-wheel drive clutch 13 is engaged and the front-wheel drive clutch 12 is disconnected. In this mode, the rear-wheel drive clutch 13 is engaged and the front-wheel drive clutch 12 is disconnected, and the power output shaft 4 can drive the rear wheels to rotate, thereby realizing rear-wheel drive. Alternatively, Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 21 、 Figure 22 、 Figure 23 and Figure 24 As shown, the rear-wheel drive mode is a mode in which there is no rear-wheel drive clutch 13 and the front-wheel drive clutch 12 is disconnected. In this mode, there is no rear-wheel drive clutch 13. The front-wheel drive clutch 12 is adjusted to be disconnected, and the power output shaft 4 can directly drive the rear wheels to rotate, thereby realizing rear-wheel drive.

[0161] like Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 17 、 Figure 18 、 Figure 19 and Figure 20 As shown, the four-wheel drive mode is a mode without the front drive clutch 12 and the rear drive clutch 13. In this mode, there is no front drive clutch 12 and no rear drive clutch 13. The power output shaft 4 can drive the front and rear wheels to rotate at the same time, and can be driven by the front and rear wheels at the same time; or Figure 1-4 、 Figure 9-12 、 Figure 13-16 、 Figure 21-24 As shown, the four-wheel drive mode is a mode in which the front-wheel drive clutch 12 and / or the rear-wheel drive clutch 13 are both engaged, and this mode includes three situations; the first situation is that there is no front-wheel drive clutch 12, but there is a rear-wheel drive clutch 13, and the rear-wheel drive clutch 13 is adjusted to be engaged, and the power output shaft 4 can drive the front and rear wheels to rotate simultaneously, and the front and rear wheels can be driven simultaneously; the second situation is that there is no rear-wheel drive clutch 13, but there is a front-wheel drive clutch 12, and the front-wheel drive clutch 12 is adjusted to be engaged, and the power output shaft 4 can drive the front and rear wheels to rotate simultaneously, and the front and rear wheels can be driven simultaneously; the third situation is that both the front-wheel drive clutch 12 and the rear-wheel drive clutch 13 are present, and the front-wheel drive clutch 12 is adjusted to be engaged, and the rear-wheel drive clutch 13 is engaged, and the power output shaft 4 can drive the front and rear wheels to rotate simultaneously, and the front and rear wheels can be driven simultaneously.

[0162] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A hybrid power system, characterized in that: It includes an engine, a first motor, a second motor, a first planetary gear, a second planetary gear, a power output shaft and a locking mechanism; The engine is in transmission connection with the first planetary gear, and the first planetary gear is connected to the power output shaft; The output shaft of the first motor is connected to the first planetary gear, the second motor is connected to the second planetary gear, and the second planetary gear is connected to the first planetary gear and the power output shaft; The first motor, the second motor, the first planetary gear and the second planetary gear are coaxially arranged; The locking mechanism is connected to the output shaft of the first motor, and is used to control whether the output shaft of the first motor is linked to or not linked to the first planetary gear.

2. The hybrid power system according to claim 1, characterized in that: The first planetary gear and the second planetary gear are located between the first motor and the second motor.

3. The hybrid power system according to claim 1, characterized in that: The first planetary gear comprises a first sun gear, a first planet gear, a first planet carrier and a first ring carrier structure; The first sun gear is sleeved on the output shaft of the first motor; The first planetary gear is sleeved on the first planetary carrier, and the first planetary gear is engaged with the first sun gear and the first ring carrier structure; The first planet carrier is in transmission connection with the engine; The first rack structure is connected to the second planetary gear and the power output shaft, and the first rack structure is freely rotatable.

4. The hybrid power system according to claim 3, characterized in that: The second planetary gear comprises a second sun gear, a second planetary gear and a second ring carrier structure; The second sun gear is sleeved on the output shaft of the second motor; The second planet gear is meshed with the second sun gear; Either one of the first and second rack structures is connected to the second planetary gear, and the other one is meshed with the second planetary gear, and the second rack structure is locked.

5. The hybrid power system according to claim 4, characterized in that: The first rack structure includes a ring gear frame, the second rack structure includes a second ring gear, the ring gear frame is connected to the second planetary gear, and the second ring gear is meshed with the second planetary gear; Alternatively, the first carrier structure includes a common ring gear, the second carrier structure includes a second planetary wheel carrier, the second planetary wheel carrier is connected to the second planetary wheels, and the common ring gear is meshed with the second planetary wheels.

6. The hybrid power system according to claim 1, characterized in that: The power output shaft is arranged inside the first motor and the second motor, and is concentrically arranged with the first motor and the second motor; Alternatively, the power output shaft is arranged outside the first motor and the second motor, and the power output shaft is connected to the first planetary gear and the second planetary gear through a transmission assembly.

7. The hybrid power system according to claim 6, characterized in that: The transmission assembly includes a third output gear and a transfer gear. The transfer gear is arranged on the ring gear carrier of the first planetary gear set. The third output gear is arranged on the power output shaft. The third output gear is meshed with the transfer gear.

8. The hybrid power system according to claim 6, characterized in that: The transmission assembly includes a third output gear and a ring gear hub; The ring gear hub is arranged on the common ring gear of the first planetary gear set, and the third output gear is meshed with the ring gear hub.

9. The hybrid power system according to claim 1, characterized in that: The hybrid system further includes an output gear and an engagement device; The output shaft of the engine is connected to the output gear via the engagement device, and the output gear is meshed with the first planetary gear; The engagement device is used to control the engine to provide power or not to provide power to the power output shaft.

10. The hybrid power system according to claim 9, characterized in that: The hybrid power system further includes a gear lock installed on the output gear and used for switching between the engine drive and the first motor drive.

11. The hybrid power system according to claim 9, characterized in that: The first planetary gear comprises a first planetary carrier and a first planetary carrier gear provided on the first planetary carrier, the first planetary carrier gear comprises a first input gear; the output gear comprises a first output gear, the first output gear is connected to the output shaft of the engine via the engagement device, and the first output gear is meshed with the first input gear; Alternatively, the first planetary gear comprises a first planet carrier and a first planet carrier gear provided on the first planet carrier, and the first planet carrier gear comprises a first input gear and a second input gear; The output gear includes a first output gear and a second output gear, the first output gear is meshed with the first input gear, and the second output gear is meshed with the second input gear. The engagement device is disposed between the first output gear and the second output gear, connected to the output shaft of the engine, and configured to engage with the first output gear or the second output gear.

12. A vehicle, characterized in that: A hybrid system comprising a front drive differential, a rear drive differential and any one of claims 1 to 11; The front end of the power output shaft is connected to the front drive differential, and the rear end of the power output shaft is connected to the rear drive differential; The power output shaft is connected to the first planetary gear.

13. The vehicle according to claim 12, characterized in that The vehicle further comprises a front drive clutch and / or a rear drive clutch; The front drive clutch is arranged between the front end of the power output shaft and the front drive differential; The rear drive clutch is arranged between the rear end of the power output shaft and the rear drive differential.

Images