Hybrid power system, vehicle, and vehicle control method

Abstract

The present application discloses a hybrid power system, a vehicle, and a vehicle control method. The hybrid power system comprises an engine, a first motor, a second motor, a first planetary gear set, a second planetary gear set, a power output shaft, and a locking mechanism; the engine is in transmitting connection with the first planetary gear set, and the first planetary gear set is connected to the power output shaft; the output shaft of the first motor is connected to the first planetary gear set, the second motor is connected to the second planetary gear set, and the second planetary gear set is connected to the first planetary gear set and the power output shaft; the first motor, the second motor, the first planetary gear set, and the second planetary gear set are coaxially arranged; the locking mechanism is connected to the output shaft of the first motor, and the locking mechanism is used for controlling the output shaft of the first motor to be linked or not linked with the first planetary gear set. In the present application, the overall structural design is rational, and both a power split mode and an engine direct drive mode are allowed, so that the hybrid power system can ensure efficient operating under all working conditions, thereby improving economic efficiency.

Description

Hybrid system, vehicle and vehicle control method

[0001] This application claims priority to Chinese Patent Application No. 202411256440.3, filed on September 6, 2024, entitled "Hybrid system, vehicle and vehicle control method" and Chinese Patent Application No. 202422202029.X, filed on September 6, 2024, entitled "Hybrid system and vehicle", the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of hybrid systems, in particular to a hybrid system, a vehicle and a vehicle control method. BACKGROUND

[0003] The existing hybrid system includes a series (range extending) architecture, a parallel architecture and a hybrid architecture, and the hybrid architecture includes a series-parallel architecture and a power split architecture. The power split architecture is to distribute the engine torque and power to the first motor and the wheel end according to the gear angular velocity and torque distribution relationship of each gear of the planetary gear set. That is, the hybrid transmission of the power split architecture can decouple the first motor from the engine and the wheel end at low wheel end speed, realizing stepless speed change function, so that the engine power is distributed to the power output shaft and the first motor for stepless adjustment. However, the inventors realize that the existing hybrid system architecture design is unreasonable, and cannot simultaneously have the power split mode and the engine direct drive mode. Since the power split mode has low efficiency in medium and high speed driving conditions, the hybrid system cannot ensure high efficiency in all conditions, resulting in poor economy. SUMMARY

[0004] The embodiments of the present application provide a hybrid system, a vehicle and a vehicle control method to solve the problem of unreasonable design of the existing hybrid system architecture, which cannot simultaneously have the power split mode and the engine direct drive mode.

[0005] A hybrid system, comprising an engine, a first motor, a second motor, a first planetary gear set, a second planetary gear set, a power output shaft and a locking mechanism;

[0006] The engine is in transmission connection with the first planetary gear set, and the first planetary gear set is connected with the power output shaft;

[0007] An output shaft of the first motor is connected with the first planetary gear set, the second motor is connected with the second planetary gear set, and the second planetary gear set is connected with the first planetary gear set and the power output shaft;

[0008] The first motor, the second motor, the first planetary gear set and the second planetary gear set are coaxially arranged;

[0009] The locking mechanism is connected with an output shaft of the first motor, and is used for controlling the output shaft of the first motor to be connected with or disconnected from the first planetary gear set.

[0010] A vehicle comprises a front drive differential, a rear drive differential and the hybrid power system.

[0011] A front end of the power output shaft is connected with the front drive differential, and a rear end of the power output shaft is connected with the rear drive differential.

[0012] The power output shaft is connected with the first planetary gear set.

[0013] A vehicle control method is applied to the vehicle and comprises the following steps.

[0014] Determining a target power mode.

[0015] If the target power mode is the engine direct drive mode, the locking mechanism is controlled to be locked, the engine is controlled to work, and the first motor is controlled to not work.

[0016] If the target power mode is the power split mode, the locking mechanism is controlled to be opened, the engine is controlled to work, and the first motor is controlled to generate power.

[0017] In the hybrid power system, the vehicle and the vehicle control method, the engine is connected with the first motor through the first planetary gear set, the first planetary gear set is connected with the power output shaft, the locking mechanism is connected with the first motor, and the output shaft of the first motor is connected with or disconnected from the first planetary gear set by adjusting the locking mechanism to be opened or locked, so that the power split mode and the engine direct drive mode can be switched, that is, when the locking mechanism is locked, the output shaft of the first motor is connected with the first planetary gear set, the engine can drive the power output shaft to rotate through the first planetary gear set, so as to enter the engine direct drive mode; when the locking mechanism is opened, the output shaft of the first motor is disconnected from the first planetary gear set, the engine can drive the first motor (for example, a generator) to generate power, and can also drive the power output shaft to rotate through the first planetary gear set, so as to enter the power split mode. The hybrid power system has a reasonable architecture design, and can have the power split mode and the engine direct drive mode, so that the hybrid power system can ensure to enter the high-efficiency operation in all working conditions, thereby improving the economy. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Fig. 1 is a first arrangement of a hybrid system in an embodiment of the present application;

[0020] Fig. 2 is a second arrangement of a hybrid system in an embodiment of the present application;

[0021] Fig. 3 is a third arrangement of a hybrid system in an embodiment of the present application;

[0022] Fig. 4 is a fourth arrangement of a hybrid system in an embodiment of the present application;

[0023] Fig. 5 is a fifth arrangement of a hybrid system in an embodiment of the present application;

[0024] Fig. 6 is a sixth arrangement of a hybrid system in an embodiment of the present application;

[0025] Fig. 7 is a seventh arrangement of a hybrid system in an embodiment of the present application;

[0026] Fig. 8 is an eighth arrangement of a hybrid system in an embodiment of the present application;

[0027] Fig. 9 is a ninth arrangement of a hybrid system in an embodiment of the present application;

[0028] Fig. 10 is a tenth arrangement of a hybrid system in an embodiment of the present application;

[0029] Fig. 11 is an eleventh arrangement of a hybrid system in an embodiment of the present application;

[0030] Fig. 12 is a twelfth arrangement of a hybrid system in an embodiment of the present application;

[0031] Fig. 13 is a thirteenth arrangement of a hybrid system in an embodiment of the present application;

[0032] Fig. 14 is a fourteenth arrangement of a hybrid system in an embodiment of the present application;

[0033] Fig. 15 is a fifteenth arrangement of a hybrid system in an embodiment of the present application;

[0034] Fig. 16 is a sixteenth arrangement of a hybrid system in an embodiment of the present application;

[0035] Fig. 17 is a seventeenth arrangement of a hybrid system in an embodiment of the present application;

[0036] Fig. 18 is an eighteenth arrangement of a hybrid system in an embodiment of the present application;

[0037] Fig. 19 is a nineteenth arrangement of a hybrid system in an embodiment of the present application;

[0038] Fig. 20 is a diagram of a twentieth arrangement of a hybrid power system according to an embodiment of the present application;

[0039] Fig. 21 is a diagram of a twenty-first arrangement of a hybrid power system according to an embodiment of the present application;

[0040] Fig. 22 is a diagram of a twenty-second arrangement of a hybrid power system according to an embodiment of the present application;

[0041] Fig. 23 is a diagram of a twenty-third arrangement of a hybrid power system according to an embodiment of the present application;

[0042] Fig. 24 is a diagram of a twenty-fourth arrangement of a hybrid power system according to an embodiment of the present application;

[0043] Fig. 25 is a logic diagram of a hybrid power system in different modes according to an embodiment of the present application.

[0044] Wherein, 1, engine; 2, first motor; 3, first planetary gear set; 31, first sun gear; 32, first planet gear; 33, first carrier; 34, first carrier gear; 341, first input gear; 342, second input gear; 35, ring gear carrier; 36, common ring gear; 4, power output shaft; 5, lockup mechanism; 6, second motor; 7, second planetary gear set; 71, second sun gear; 72, second planet gear; 73, second ring gear; 74, second carrier; 8, transmission assembly; 81, third output gear; 82, adapter 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

[0045] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be 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 application and should not be used to limit the present application.

[0046] In the description of the application, it is to 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 indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0047] In the description of the application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0048] The embodiment of the application provides a kind of hybrid power system, as shown in Figure 1-25, the hybrid power system includes engine 1, first motor 2, second motor 6, first planetary gear set 3, second planetary gear set 7, power output shaft 4 and locking mechanism 5;Engine 1 is transmission connection with first planetary gear set 3, first planetary gear set 3 is connected with power output shaft 4;The output shaft of first motor 2 is connected with first planetary gear set 3, second motor 6 is connected with second planetary gear set 7, second planetary gear set 7 is connected with first planetary gear set 3 and power output shaft 4;First motor 2, second motor 6, first planetary gear set 3 and second planetary gear set 7 are coaxially arranged;Locking mechanism 5 is connected with the output shaft of first motor 2, for controlling the output shaft of first motor 2 and first planetary gear set 3 linkage or not.

[0049] As an example, the hybrid power system comprises an engine 1, a first motor 2, a first planetary gear set 3, a power output shaft 4 and a locking mechanism 5; when installed, the engine 1 is in transmission connection with the first motor 2 through the first planetary gear set 3, i.e. the engine 1 is connected with the first planetary gear set 3, the first planetary gear set 3 is connected with the output shaft of the first motor 2, and the first planetary gear set 3 is connected with the power output shaft 4; in this way, the engine 1 can drive the first motor 2 (e.g. a generator) to generate electric energy, and also can drive the power output shaft 4 to rotate through the first planetary gear set 3; the first motor 2 can also drive the power output shaft 4 to rotate through the first planetary gear set 3. The locking mechanism 5 is connected with the output shaft of the first motor 2, and by adjusting the opening or locking of the locking mechanism 5, the output shaft of the first motor 2 can be linked with or not linked with the first planetary gear set 3, so that the power split mode and the engine direct drive mode can be switched, i.e. when the locking mechanism 5 is locked, the output shaft of the first motor 2 is not linked with the first planetary gear set 3, and the engine direct drive mode can be entered; when the locking mechanism 5 is opened, the output shaft of the first motor 2 is linked with the first planetary gear set 3, and the power split mode can be entered. Specifically, 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 work, the engine 1 cannot drive the first motor 2 to rotate through the first planetary gear set 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 set 3, so that the hybrid power system enters the engine direct drive mode; or, the engine 1 is controlled to work, and the locking mechanism 5 is opened, i.e. 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 set 3, so that the first motor 2 generates electricity, and the engine 1 can also drive the power output shaft 4 to rotate through the first planetary gear set 3, so that the hybrid power system enters the power split mode. The hybrid power system in this example has a reasonable architecture design, and can have both the power split mode and the engine direct drive mode, so that the hybrid power system can run efficiently in low-speed and medium-high speed working conditions, to improve the economy. The locking mechanism 5 can be a clutch or an electromagnetic bolt.

[0050] As an example, the hybrid power system further comprises a second motor 6 and a second planetary gear set 7; the second motor 6 is connected to the second planetary gear set 7, and the second planetary gear set 7 is connected to the first planetary gear set 3 and the power output shaft 4; the second motor 6 (for example, a driving motor) is arranged in such a way that the power provided by the second motor 6 can drive the second planetary gear set 7 to rotate, and the second planetary gear set 7 can directly drive the power output shaft 4 to rotate or drive the power output shaft 4 to rotate together with the first planetary gear set 3. In this example, the locking mechanism 5 is locked, the engine 1 is working, the first motor 2 is not working, and the second motor 6 is not working; the engine 1 drives the power output shaft 4 to rotate through the first planetary gear set 3, so that the hybrid power system enters the engine direct drive mode; or, the locking mechanism 5 is 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 set 3, the engine 1 can also drive the power output shaft 4 to rotate through the first planetary gear set 3, and the second motor 6 can drive the power output shaft 4 to rotate through the second planetary gear set 7, so that the hybrid power system enters the power split mode; or, the locking mechanism 5 is locked, the engine 1 is working, the first motor 2 is not working, and the second motor 6 is working; the engine 1 drives the power output shaft 4 to rotate through the first planetary gear set 3, and the second motor 6 drives the power output shaft 4 to rotate through the second planetary gear set 7, so that the hybrid power system enters the parallel mode.

[0051] 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 connected to the first planetary gear set 3, and the hybrid power system can enter the parallel mode or the engine direct drive mode according to whether the second motor 6 is working; when the locking mechanism 5 is opened, the output shaft of the first motor 2 is connected to the first planetary gear set 3, and the hybrid power system can enter the power split mode; this hybrid power system has a reasonable architecture, and can have the power split mode, the engine direct drive mode and the parallel mode, so that the hybrid power system can enter the high-efficiency operation mode in all working conditions, thereby improving the economy.

[0052] In this example, the first motor 2, the second motor 6, the first planetary gear set 3 and the second planetary gear set 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 set 3 and the second planetary gear set 7 can cancel each other out, so that only torque but no force is applied to the rotation center line, which can reduce the stress on the power output shaft and prolong the service life of the power output shaft; at the same time, by arranging the first planetary gear set 3 and the second planetary gear set 7, the speed ratio can be amplified without occupying too much space, and the structure is more compact.

[0053] In an embodiment, as shown in FIGS. 1-24, the first planetary gear set 3 and the second planetary gear set 7 are located between the first motor 2 and the second motor 6.

[0054] As an example, in the structural arrangement of the hybrid system, the first planetary gear set 3 and the second planetary gear set 7 are located between the first motor 2 and the second motor 6, so that the structural compactness between the first planetary gear set 3 and the second planetary gear set 7 is better, the occupied space is small, and the power transmission path is short, thereby ensuring the transmission performance.

[0055] In an embodiment, as shown in FIGS. 1-24, the first planetary gear set 3 includes a first sun gear 31, a first planetary gear 32, a first planetary carrier 33, and a first ring gear structure; the first sun gear 31 is sleeved on the output shaft of the first motor 2; the first planetary gear 32 is sleeved on the first planetary carrier 33, and the first planetary gear 32 is engaged with the first sun gear 31 and the first ring gear structure; the first planetary carrier 33 is in transmission connection with the engine 1; the first ring gear structure is connected with the second planetary gear set 7 and the power output shaft 4, and the first ring gear structure can rotate freely.

[0056] As an example, it is introduced that the first planetary gear set 3 includes a first sun gear 31, a first planetary gear 32, a first planetary carrier 33, and a first ring gear structure; when installed, the first sun gear 31 is sleeved on the output shaft of the first motor 2, the first planetary gear 32 is sleeved 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 gear structure; the first planetary carrier 33 is in transmission connection with the engine 1, which can be in transmission connection through a gear assembly or other structures; the gear ring, planetary gear, and sun gear in the first planetary gear set 3 are connected together and can rotate independently of each other, forming a first degree of freedom, and the first ring gear structure can rotate freely, forming a second degree of freedom, that is, the first planetary gear set 3 has two degrees of freedom. In this example, the locking mechanism 5 cooperates with the first planetary gear set 3 to control the linkage or non-linkage of the output shaft of the first motor 2 with the first planetary gear set 3, and also changes the degrees of freedom of the first planetary gear set 3, so that the hybrid system can realize the switching of 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 set 3, at this time, the first planetary gear set 3 has two degrees of freedom, so that the engine 1 can drive the first motor 2 to rotate through the first planetary gear set 3 to make the first motor 2 generate electricity, and can also drive the power output shaft 4 to rotate through the first planetary gear set 3 to make the hybrid system enter the power split mode; when the locking mechanism 5 is locked, the first motor 2 is not linked with the first planetary gear set 3, at this time, the first planetary gear set 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 set 3, and cannot control the first motor 2 to work, so that the hybrid system enters the engine direct drive mode.

[0057] In addition, the first ring gear structure is connected with the second planetary gear set 7 and the power output shaft 4, and power can be provided to the power output shaft 4 through the first ring gear structure to drive the wheels or other to-be-driven members connected with the power output shaft 4 to work. In this way, the power provided by the engine 1 drives the first planetary gear carrier gear 34 to rotate through the output gear 9, the first planetary gear carrier gear 34 drives the first planetary gear carrier 33 to rotate, the first planetary gear carrier 33 drives the first planetary gear 32 to rotate, and the first planetary gear 32 can drive the first ring gear structure and the first sun gear 31 to rotate at the same time, so as to provide power to the power output shaft 4 and the first motor 2; the first motor 2 can also provide power to drive the first sun gear 31 to rotate through its output shaft, the first sun gear 31 drives the first planetary gear 32 to rotate, and then the first ring gear structure is driven to rotate, so as to provide power to the power output shaft 4. The first ring gear structure is a ring gear structure meshing with the first planetary gear 32. The ring gear structure is a structure of a gear ring or a wheel carrier in general, which can only have a gear ring or only have a wheel carrier. The gear ring is used to mesh with the planetary gear, and the wheel carrier is used to install the planetary gear to make the planetary gear rotate around the wheel carrier.

[0058] In an embodiment, as shown in FIGS. 1-24, the second planetary gear set 7 includes a second sun gear 71, a second planetary gear 72, and a second ring gear structure; the second sun gear 71 is sleeved on the output shaft of the second motor 6; the second planetary gear 72 meshes with the second sun gear 71; any one of the first ring gear structure and the second ring gear structure is connected with the second planetary gear 72, and the other one meshes with the second planetary gear 72, and the second ring gear structure is locked.

[0059] As an example, it is introduced that the second planetary gear set 7 includes a second sun gear 71, a second planetary gear 72, and a second ring gear structure, and the second ring gear structure is a ring gear structure connected with or meshing with the second planetary gear 72. When installed, the second ring gear structure is fixed to play a supporting role, 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 meshes with the second sun gear 71, the second ring gear structure is locked, the second ring gear structure is connected with the first planetary gear set 3, specifically with the first ring gear structure of the first planetary gear set 3, the planetary gears and the sun gears in the second planetary gear set 7 are connected together and can rotate freely, and have one degree of freedom, while the gear ring or the planetary gear of the second planetary gear set 7 is locked and cannot rotate freely; in this way, the second ring gear structure is taken as a supporting reference to provide support for the rotation of the second sun gear 71 and the second planetary gear 72, and the power provided by the second motor 6 can drive the second sun gear 71 to rotate, the second sun gear 71 drives the second planetary gear 72 to rotate, and the second planetary gear 72 can directly provide power to the power output shaft 4; or the second planetary gear set 7 can be connected with the first ring gear structure as a whole to provide power to the power output shaft 4 together.

[0060] As an example, either of the first carrier structure and the second carrier structure is connected with the second planetary gear 72, and the other is engaged with the second planetary gear 72, so that the second planetary gear set 7 has two arrangements as follows:

[0061] The first arrangement is shown in FIGS. 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21 and 23. The first carrier structure is provided with a carrier, and the carrier of the first carrier structure is arranged in the second planetary gear 72 and connected with the second planetary gear 72, so that the second planetary gear 72 can rotate around the carrier. Correspondingly, the second carrier structure is provided with a ring gear, and the ring gear is engaged with the second planetary gear 72. The power provided by the second motor 6 drives the second sun gear 71 through the output shaft of the second motor 6, and the second sun gear 71 drives the second planetary gear 72 to rotate, and the second planetary gear 72 rotates on the inner side of the second carrier structure to drive the first carrier structure to rotate, so as to provide power to the power output shaft 4 after being connected with the first carrier structure.

[0062] The second arrangement is shown in FIGS. 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22 and 24. The second carrier structure is provided with a carrier, and the carrier of the second carrier structure is arranged in the second planetary gear 72 and connected with the second planetary gear 72, so that the second planetary gear 72 can rotate around the carrier. Correspondingly, the first carrier structure is provided with a ring gear, and the ring gear is engaged with the second planetary gear 72. The power provided by the second motor 6 drives the second sun gear 71 through the output shaft of the second motor 6, and the second sun gear 71 drives the second planetary gear 72 to rotate, and the second planetary gear 72 rotates on the first carrier structure to drive the first carrier structure to rotate, so as to provide power to the power output shaft 4 after being connected with the first carrier structure.

[0063] In an embodiment, as shown in FIGS. 1-24, the first carrier structure includes a ring gear carrier 35, the second carrier structure includes a second ring gear 73, the ring gear carrier 35 is connected with the second planetary gear 72, and the second ring gear 73 is engaged with the second planetary gear 72; or the first carrier structure includes a common ring gear 36, the second carrier structure includes a second planetary gear carrier 74, the second planetary gear carrier 74 is connected with the second planetary gear 72, and the common ring gear 36 is engaged with the second planetary gear 72.

[0064] As an example, as shown in FIG. 1, FIG. 3, FIG. 5, FIG. 7, FIG. 9, FIG. 11, FIG. 13, FIG. 15, FIG. 17, FIG. 19, FIG. 21 and FIG. 23, when the first ring structure adopts the ring gear 35, the ring gear 35 is provided with a first ring gear and a wheel frame, the first ring gear of the ring gear 35 is engaged with the first planetary gear 32, and the wheel frame of the ring gear 35 is connected with the second planetary gear 72 so that the second planetary gear 72 can rotate around the wheel frame; correspondingly, the second ring structure adopts the second ring gear 73, the outer side of the second ring gear 73 is locked, the inner side of the second ring gear 73 is engaged with the second planetary gear 72, the second planetary gear 72 is connected with the ring gear 35, the ring gear 35 is connected with the power output shaft 4, and the rotation of the second planetary gear 72 can drive the ring gear 35 to rotate, so as to realize the power supply to the power output shaft 4.

[0065] As another example, as shown in FIG. 2, FIG. 4, FIG. 6, FIG. 8, FIG. 10, FIG. 12, FIG. 14, FIG. 16, FIG. 18, FIG. 20, FIG. 22 and FIG. 24, when the first ring structure adopts the common ring gear 36, the common ring gear 36 is provided with a first ring and a second ring, the first ring is engaged with the first planetary gear 32, and the second ring is engaged with the second planetary gear 72; correspondingly, the second ring structure adopts the second planetary gear frame 74, the second planetary gear frame 74 is locked, the second planetary gear 72 is sleeved on the second planetary gear frame 74 so that the second planetary gear 72 rotates around the second planetary gear frame 74, the inner side of the second planetary gear 72 is engaged with the second sun gear 71, the outer side of the second planetary gear 72 is engaged with the common ring gear 36, the common ring gear 36 is connected with the power output shaft 4, and the rotation of the second planetary gear 72 can drive the common ring gear 36 to rotate, so as to realize the power supply to the power output shaft 4.

[0066] In an embodiment, as shown in FIG. 1-24, the power output shaft 4 is arranged in the first motor 2 and the second motor 6 and is arranged concentrically with the first motor 2 and the second motor 6; or, 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 with the first planetary gear set 3 and the second planetary gear set 7 through the transmission assembly 8.

[0067] As an example, the power output shaft 4 has two arrangement structures:

[0068] The first arrangement structure, as shown in FIG. 1-12, is that the power output shaft 4 is arranged in the first motor 2 and the second motor 6 and is arranged concentrically with the first motor 2 and the second motor 6, and is connected with the first planetary gear set 3 and the second planetary gear set 7 to realize the power supply to the power output shaft 4. This arrangement can save space and has a compact structure. The main application scenario is a car, and the car does not require large torque, so the power output shaft 4 does not need to be too thick and can meet the installation requirements of the power output shaft 4 arranged in the first motor 2 and the second motor 6.

[0069] The second arrangement, as shown in FIGS. 13-24, is to provide the power output shaft 4 outside the first motor 2 and the second motor 6, specifically, the power output shaft 4 is arranged radially outside the first motor 2 and the second motor 6 and arranged axially parallel to the first motor 2 and the second motor 6. The power output shaft 4 is connected to the first planetary gear set 3 and the second planetary gear set 7 through the transmission assembly 8, and the power output shaft 4 is powered through the first planetary gear set 3, the second planetary gear set 7 and the transmission assembly 8. This arrangement can be independently arranged in structure, without special design of the hybrid transmission, saving manufacturing cost. The main application scenario is off-road vehicles or pick-ups, as the demand torque of off-road vehicles or pick-ups is large, the power output shaft 4 needs to be thick to ensure strength, and therefore is suitable for being arranged outside.

[0070] In an embodiment, as shown in FIGS. 13, 15, 17, 19, 21 and 23, the transmission assembly 8 includes a third output gear 81 and an adapter gear 82, the adapter gear 82 is arranged on the ring gear carrier 35 of the first planetary gear set 3, and the third output gear 81 is arranged on the power output shaft 4, and the third output gear 81 is engaged with the adapter gear 82.

[0071] As an example, the first structure of the transmission assembly 8 is introduced, which specifically includes the third output gear 81 and the adapter gear 82. During installation, the second ring gear 73 of the second planetary gear set 7 is locked first to serve as a support; the adapter gear 82 is arranged on the ring gear carrier 35 of the first planetary gear set 3, and the third output gear 81 is arranged on the power output shaft 4, and the third output gear 81 is engaged with the adapter gear 82. In this structure, the power is transmitted to the adapter gear 82, and the adapter gear 82 drives the third output gear 81 to rotate, so as to drive the power output shaft 4 to rotate.

[0072] In an embodiment, as shown in FIGS. 14, 16, 18, 20, 22 and 24, the transmission assembly 8 includes a third output gear 81 and a ring gear hub 83; the ring gear hub 83 is arranged on the common ring gear 36 of the first planetary gear set 3, and the third output gear 81 is engaged with the ring gear hub 83.

[0073] As an example, the second structure of the transmission assembly 8 is introduced, which specifically includes the third output gear 81 and the ring gear hub 83. During installation, the second planetary carrier 74 of the second planetary gear set 7 is locked first to serve as a support; the second planetary gear 72 is installed on the second planetary carrier 74; the ring gear hub 83 is arranged on the common ring gear 36 of the first planetary gear set 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, the power is transmitted to the common ring gear 36, and the common ring gear 36 drives the ring gear hub 83 to rotate, and the ring gear hub 83 drives the third output gear 81 to rotate, so as to drive the power output shaft 4 to rotate.

[0074] In one embodiment, as shown in FIG. 1-25, the hybrid system further comprises 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 in driving connection with the first planetary gear set 3; the coupling device 10 is used to control the power on-off between the engine 1 and the power output shaft 4.

[0075] As an example, the hybrid system further comprises an output gear 9 and a coupling device 10; when installed, 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 connected to the first planetary gear set 3, so that the power provided by the engine 1 drives the output gear 9 to rotate through 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, by controlling the coupling or disconnection of the coupling device 10, the output shaft of the engine 1 can be connected or disconnected with the output gear 9, i.e. the power communication or disconnection between the engine 1 and the power output shaft 4, for switching the working state of the engine 1 to realize the switching of the working mode of the hybrid system. The coupling device 10 can be a clutch or a synchronizer.

[0076] As an example, when the coupling device 10 is coupled, the power output by the engine 1 can be transmitted to the first planetary gear set 3 through the output gear 9, and then transmitted to the power output shaft 4 through the first planetary gear set 3, to realize engine driving, which specifically includes the following modes: first, control the coupling device 10 to be coupled, the locking mechanism 5 is locked, the engine 1 works, the first motor 2 does not work, and the second motor 6 does not work, so that the hybrid system enters the engine direct drive mode; second, control the coupling device 10 to be coupled, the locking mechanism 5 is opened, the engine 1 works, the first motor 2 generates electricity, and the second motor 6 works, so that the hybrid system enters the power split mode; third, control the coupling device 10 to be coupled, the locking mechanism 5 is locked, the engine 1 works, and the second motor 6 works, so that the hybrid system enters the parallel mode.

[0077] As another example, when the coupling device 10 is disconnected, the power output by the engine 1 cannot be transmitted to the first planetary gear set 3 through the output gear 9, at this time, the power output by the first motor 2 can be transmitted to the power output shaft 4 through 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 through the second planetary gear set 7. In this example, when the coupling device 10 is disconnected 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 the pure electric mode to realize motor driving; or, one of the first motor 2 and the second motor 6 is controlled to work, and the other is not controlled to work, so that the hybrid system enters the energy recovery mode.

[0078] The hybrid system architecture in this example is reasonable, and can have power split mode, engine direct drive mode, parallel mode, pure electric mode and energy recovery mode, so that the hybrid system ensures high efficiency in all operating conditions to improve economy.

[0079] In an embodiment, as shown in FIG. 1-25, the hybrid system further comprises a gear lock 11 installed on the output gear 9 for switching between engine 1 drive or first motor 2 drive.

[0080] As an example, the hybrid system further comprises a gear lock 11, which is installed on the output gear 9, and has an open state and a locked state. When in the open state, the output gear 9 can rotate freely, and when in the locked state, the output gear 9 is locked and cannot rotate. By adjusting the opening or locking of the gear lock 11, the degrees of freedom of the first planetary gear set 3 can be controlled, two degrees of freedom when open, and one degree of freedom when locked. 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 gear set 3 has two degrees of freedom, the sun gear, the planet carrier and the ring gear of the first planetary gear set 3 are free to rotate, so the power output by the first motor 2 cannot drive the power output shaft 4 to rotate; 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 carrier 33 connected with the output gear 9 is also locked, the first planetary gear set 3 has only one degree of freedom, at this time the power output by the first motor 2 can drive the power output shaft 4 to rotate through the sun gear, the planet gear and the ring gear of the first planetary gear set 3, realizing the pure electric mode driven by the first motor 2.

[0081] 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.

[0082] For example, the control engagement device 10 is engaged, the locking mechanism 5 is locked, the gear lock 11 is open, 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 engagement device 10, the output gear 9 drives the first planetary gear set 3 to rotate, thereby providing power to the power output shaft 4.

[0083] For example, the engagement device 10 is controlled to be engaged, the lock mechanism 5 is controlled to be locked, the gear lock 11 is controlled to be locked, the engine 1 is controlled to work, the first motor 2 is controlled to work, and the second motor 6 is controlled to work, so that the hybrid power system enters the series mode, at this time, the engine 1 provides power to drive the output gear 9 to rotate through the engagement device 10, the output gear 9 drives the first planetary gear set 3 to rotate, so as to provide power to the power output shaft 4; the first motor 2 provides power to drive the first planetary gear set 3 to rotate, so as to provide power to the power output shaft 4; the second motor 6 provides power to drive the second planetary gear set 7 to rotate, the second planetary gear set 7 can directly provide power to the power output shaft 4, or can be connected with the first planetary gear set 3 as a whole to provide power to the power output shaft 4.

[0084] For example, the engagement device 10 is controlled to be engaged, the lock mechanism 5 is controlled to be locked, the gear lock 11 is controlled to be locked, the engine 1 is controlled to work, the first motor 2 is controlled to work, and the second motor 6 is controlled to work, so that the hybrid power system enters the series mode, at this time, the engine 1 provides power to drive the output gear 9 to rotate through the engagement device 10, the output gear 9 drives the first planetary gear set 3 to rotate, so as to provide power to the power output shaft 4; the first motor 2 provides power to drive the first planetary gear set 3 to rotate, so as to provide power to the power output shaft 4; the second motor 6 provides power to drive the second planetary gear set 7 to rotate, the second planetary gear set 7 can directly provide power to the power output shaft 4, or can be connected with the first planetary gear set 3 as a whole to provide power to the power output shaft 4.

[0085] For example, the engagement device 10 is controlled to be engaged, the lock mechanism 5 is controlled to be locked, the gear lock 11 is controlled to be locked, the engine 1 is controlled to work, the first motor 2 is controlled to work, and the second motor 6 is controlled to work, so that the hybrid power system enters the series mode, at this time, the engine 1 provides power to drive the output gear 9 to rotate through the engagement device 10, the output gear 9 drives the first planetary gear set 3 to rotate, so as to provide power to the power output shaft 4; the first motor 2 provides power to drive the first planetary gear set 3 to rotate, so as to provide power to the power output shaft 4; the second motor 6 provides power to drive the second planetary gear set 7 to rotate, the second planetary gear set 7 can directly provide power to the power output shaft 4, or can be connected with the first planetary gear set 3 as a whole to provide power to the power output shaft 4.

[0086] For example, the engagement device 10 is controlled to be engaged, the lock mechanism 5 is controlled to be locked, the gear lock 11 is controlled to be locked, the engine 1 is controlled to work, the first motor 2 is controlled to work, and the second motor 6 is controlled to work, so that the hybrid power system enters the series mode, at this time, the engine 1 provides power to drive the output gear 9 to rotate through the engagement device 10, the output gear 9 drives the first planetary gear set 3 to rotate, so as to provide power to the power output shaft 4; the first motor 2 provides power to drive the first planetary gear set 3 to rotate, so as to provide power to the power output shaft 4; the second motor 6 provides power to drive the second planetary gear set 7 to rotate, the second planetary gear set 7 can directly provide power to the power output shaft 4, or can be connected with the first planetary gear set 3 as a whole to provide power to the power output shaft 4.

[0087] For example, the engagement device 10 is controlled to be engaged, the lock mechanism 5 is controlled to be locked, the gear lock 11 is controlled to be locked, the engine 1 is controlled to work, the first motor 2 is controlled to work, and the second motor 6 is controlled to work, so that the hybrid power system enters the series mode, at this time, the engine 1 provides power to drive the output gear 9 to rotate through the engagement device 10, the output gear 9 drives the first planetary gear set 3 to rotate, so as to provide power to the power output shaft 4; the first motor 2 provides power to drive the first planetary gear set 3 to rotate, so as to provide power to the power output shaft 4; the second motor 6 provides power to drive the second planetary gear set 7 to rotate, the second planetary gear set 7 can directly provide power to the power output shaft 4, or can be connected with the first planetary gear set 3 as a whole to provide power to the power output shaft 4.

[0088] The hybrid system architecture in this example is reasonable, and can have engine direct drive mode, power split mode, parallel mode, pure electric mode and energy recovery mode, so that the hybrid system ensures high efficiency in all operating conditions to improve economy. The locking mechanism 5 is a device for switching power split mode and engine direct drive mode / parallel mode; the gear lock 11 is a device for switching first motor 2 drive and / or engine 1 drive, oil mixed plug-in hybrid; the architecture combines power split and engine direct drive, and the power split mode is selected at low speed, and the pure electric mode is also selected, and the engine direct drive mode or parallel mode is selected at medium and high speed, which ensures the engine to enter high efficiency operation in all operating conditions and improves the economy. For example, in the power split mode or pure electric mode, the output torque can be increased by allowing the first motor 2 to have a high speed ratio, which reduces the acceleration time per 100 kilometers per hour, and in the engine direct drive mode or parallel mode, the maximum speed can be improved by allowing the second motor 6 to have a low speed ratio.

[0089] In an embodiment, as shown in FIGS. 1-24, the first planetary gear set 3 includes a first carrier 33 and a first carrier gear 34 disposed on the first carrier 33, the first carrier gear 34 including a first input gear 341; the output gear 9 includes a first output gear 91, the first output gear 91 being connected to the output shaft of the engine 1 through the engagement device 10, the first output gear 91 being engaged with the first input gear 341; or, the first planetary gear set 3 includes a first carrier 33 and a first carrier gear 34 disposed on the first carrier 33, the first carrier gear 34 including 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 being engaged with the first input gear 341, the second output gear 92 being engaged with the second input gear 342, the engagement device 10 being disposed between the first output gear 91 and the second output gear 92, being connected to the output shaft of the engine 1, and being used to engage with the first output gear 91 or the second output gear 92, or neither of them.

[0090] As an example, the first carrier gear 34 has two structural forms, i.e., the first planetary gear set 3 has two structural forms; the output gear 9 has two structural forms.

[0091] The first structure, as shown in FIG. 1, FIG. 3, FIG. 5, FIG. 7, FIG. 9, FIG. 11, FIG. 13, FIG. 15, FIG. 17, FIG. 19, FIG. 21 and FIG. 23, the first planetary gear set 3 includes a first carrier 33 and a first carrier gear 34 arranged on the first carrier 33, the first carrier gear 34 includes a first input gear 341, when installed, the first sun gear 31 is sleeved on the output shaft of the first motor 2, the first planetary gear 32 is sleeved on the first 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 structure; the first input gear 341 is arranged on the first carrier 33, the first input gear 341 is engaged with the output gear 9 (specifically the first output gear 91) of the engine 1, the first ring structure is connected with the second planetary gear set 7, and is used for connecting the power output shaft 4; in this way, the power provided by the engine 1 drives the output gear 9 to rotate, the output gear 9 drives the first input gear 341 to rotate, the first input gear 341 drives the first carrier 33 to rotate, the first carrier 33 drives the first planetary gear 32 to rotate, and the first ring structure and the first sun gear 31 can be driven to rotate at the same time, so that power is provided to the power output shaft 4 and the first motor 2; the first motor 2 can also provide power, and drives the first sun gear 31 to rotate through the output shaft, the first sun gear 31 drives the first planetary gear 32 to rotate, and then drives the first ring structure to rotate, so that power is provided to the power output shaft 4; the power provided by the second motor 6 can be directly provided to the power output shaft 4 through the second planetary gear set 7, or can be integrated with the first planetary gear set 3 to jointly provide power to the power output shaft 4. Correspondingly, the output gear 9 includes the first output gear 91, when installed, the first output gear 91 is engaged with the first input gear 341 of the first planetary gear set 3, the engagement device 10 is used for being combined with the first output gear 91, so that the output shaft of the engine 1 is connected with the first output gear 91 through the engagement device 10, the first output gear 91 is engaged with the first carrier gear 34 of the first planetary gear set 3, and specifically is engaged with the first input gear 341; in this way, the power provided by the engine 1 can drive the first output gear 91 to rotate through the engagement device 10, the first output gear 91 drives the first carrier gear 34 of the first planetary gear set 3 to rotate, so that power can be provided to the first motor 2 and the power output shaft 4. By adjusting the combination or disconnection of the engagement device 10, the output shaft of the engine 1 can be linked or not linked with the first output gear 91, that is, 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 freedom degree of the first planetary gear set 3 can be controlled, which has two freedom degrees when opened and one freedom degree when locked.When the gear lock 11 is opened, the locking mechanism 5 is also opened, and the first motor 2 is working, because the first planetary gear set 3 has two degrees of freedom, the sun gear, the planet carrier and the ring gear of the first planetary gear set 3 are free to rotate, so the power output by the first motor 2 cannot drive the power output shaft 4 to rotate; when the gear lock 11 is locked, the locking mechanism 5 is opened, and the first motor 2 is working, because the first planetary carrier 33 connected with the output gear 9 is also locked, so the first planetary gear set 3 has only one degree of freedom, at this time the power output by the first motor 2 can drive the power output shaft 4 to rotate through the sun gear, the planet gear and the ring gear of the first planetary gear set 3, realizing the pure electric mode driven by the first motor 2.

[0092] The second structure form, as shown in FIG. 2, FIG. 4, FIG. 6, FIG. 8, FIG. 10, FIG. 12, FIG. 14, FIG. 16, FIG. 18, FIG. 20, FIG. 22 and FIG. 24, the first planetary gear set 3 includes a first carrier 33 and a first carrier gear 34 arranged on the first carrier 33, the first carrier gear 34 includes a first input gear 341 and a second input gear 342, when installed, the first sun gear 31 is sleeved on the output shaft of the first motor 2, the first planetary gear 32 is sleeved on the first 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 gear structure; the first input gear 341 and the second input gear 342 are arranged on the first carrier 33 in sequence, the first input gear 341 and the second input gear 342 are engaged with the first output gear 91 and the second output gear 92 of the engine 1 respectively, the first ring gear structure is connected with the second planetary gear set 7 and used for connecting the power output shaft 4; in this way, when the power provided by the engine 1 drives the output gear 9 to rotate, the output gear 9 drives the first input gear 341 to rotate, the first input gear 341 drives the first carrier 33 to rotate, the first carrier 33 drives the first planetary gear 32 to rotate, and the first ring gear structure and the first sun gear 31 can be driven to rotate at the same time, so as to realize the power provided 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, the output gear 9 drives the second input gear 342 to rotate, the second input gear 342 drives the first carrier 33 to rotate, the first carrier 33 drives the first planetary gear 32 to rotate, and the first ring gear structure and the first sun gear 31 can be driven to rotate at the same time, so as to realize the power provided 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, drive the first sun gear 31 to rotate through the output shaft, drive the first planetary gear 32 to rotate through the first sun gear 31, and drive the first ring gear structure to rotate, so as to realize the power provided to the power output shaft 4; the power provided by the second motor 6 can be directly provided to the power output shaft 4 through the second planetary gear set 7, or can be integrated with the first planetary gear set 3 to provide power to the power output shaft 4 together.Correspondingly, the output gear 9 comprises a first output gear 91 and a second output gear 92, which are installed to mesh with the first carrier gear 34 of the first planetary gear set 3 respectively, specifically the first output gear 91 meshes with the first input gear 341 of the first planetary gear set 3 and the second output gear 92 meshes with the second input gear 342 of the first planetary gear set 3, and the engagement device 10 is arranged between the first output gear 91 and the second output gear 92 for meshing 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 drive the first output gear 91 to rotate through the engagement device 10, the first output gear 91 drives the first input gear 341 of the first planetary gear set 3 to rotate, thereby providing power to the first motor 2 and the power output shaft 4, which is a one-gear structure; when the engagement device 10 is combined with the second output gear 92, the power provided by the engine 1 can drive the second output gear 92 to rotate through the engagement device 10, the second output gear 92 drives the second input gear 342 of the first planetary gear set 3 to rotate, thereby providing power to the first motor 2 and the power output shaft 4, which is a two-gear structure; when the engagement device 10 is disconnected, the power provided by the engine 1 is blocked and cannot provide power to the first motor 2 and the power output shaft 4, which is a neutral gear. By adjusting the combination or disconnection of the engagement device 10, the output shaft of the engine 1 can be linked or not linked with the first output gear 91 or the second output gear 92, 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 or the second output gear 92, and by adjusting the opening or locking of the gear lock 11, the rotation of the first input gear 341 driven by the first output gear 91 or the rotation of the second input gear 342 driven by the second output gear 92 can be controlled, and the freedom of the first planetary gear set 3 can be controlled, i.e. two degrees of freedom when opened and one degree of freedom when locked. When the gear lock 11 is opened and the locking mechanism 5 is also opened, and the first motor 2 is working, since the first planetary gear set 3 has two degrees of freedom, the sun gear, the carrier and the ring gear of the first planetary gear set 3 are all free to rotate, so the power output by the first motor 2 cannot drive the power output shaft 4 to rotate; while the gear lock 11 is locked and the locking mechanism 5 is opened, and the first motor 2 is working, since the first carrier 33 connected with the output gear 9 is also locked, the first planetary gear set 3 has only one degree of freedom, at this time the power output by the first motor 2 can drive the power output shaft 4 to rotate through the sun gear, the planet gear and the ring gear of the first planetary gear set 3, realizing the pure electric mode driven by the first motor 2.

[0093] The hybrid power system further comprises an engine torque reduction, which is arranged on the output shaft of the engine 1 when installed, and can be used to reduce the speed of the engine 1, increase the output torque, reduce the load inertia and improve the fuel economy.

[0094] In an embodiment, as shown in FIGS. 1-24, the engagement 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 engagement 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, to meet the adjustment between the two gears and the neutral gear.

[0095] The embodiment of the present application provides a vehicle, as shown in FIGS. 1-24, which includes a front drive differential 14, a rear drive differential 15, and the hybrid power system in the above embodiment; the front end of the power output shaft 4 is connected with the front drive differential 14, and the rear end of the power output shaft 4 is connected with the rear drive differential 15; the power output shaft 4 is connected with the first planetary gear set 3.

[0096] As an example, the vehicle includes a front drive differential 14, a rear drive differential 15, and a hybrid power system; the hybrid power system is applied to the vehicle, and can also be applied to other products or transportation equipment. The hybrid power system includes an engine 1, a first motor 2, a first planetary gear set 3, a power output shaft 4, and a locking mechanism 5; when installed, the engine 1 is in transmission connection with the first motor 2 through the first planetary gear set 3, and the first planetary gear set 3 is connected with the power output shaft 4; in this way, the engine 1 can drive the first motor 2 (for example, a generator) to generate electric energy, and at the same time, can also drive the power output shaft 4 to rotate through the first planetary gear set 3. The locking mechanism 5 is connected with the first motor 2, and by adjusting the opening or locking of the locking mechanism 5, the output shaft of the first motor 2 can be linked with or not linked with the first planetary gear set 3, so as to realize the switching between the power split mode and the engine direct drive mode. Specifically, by controlling the locking mechanism 5 to be locked, the engine 1 works, and the first motor 2 does not work, so as to make the hybrid power system enter the engine direct drive mode; or, by controlling the locking mechanism 5 to be opened, the engine 1 works, and the first motor 2 is controlled to generate electricity, so as to make the hybrid power system enter the power split mode. The hybrid power system in the example has a reasonable architecture design, and can have both the power split mode and the engine direct drive mode, so that the hybrid power system can ensure to enter the high-efficiency operation in all working conditions, so as to improve the economy.

[0097] In this example, the front end of the power output shaft 4 is connected with the front differential 14, and the rear end of the power output shaft 4 is connected with the rear differential 15; the power output shaft 4 is connected with the first planetary gear set 3; the engine 1, the first motor 2 and the second motor 6 are set in cooperation to make the hybrid power system form four power modes of engine direct drive mode, power split mode, parallel mode and pure electric mode to provide power for the power output shaft 4, and the power output shaft 4 can drive the front wheels and the rear wheels to rotate at the same time to form a four-wheel drive mode; the setting makes each of the four power modes correspond to one four-wheel drive mode, that is, the hybrid power system forms four arrangement modes, one set of electric drive electric control system, and realizes the four modes; the architecture is simple, the cost is low, the oil mixing and plug-in hybrid can be realized; and the power performance, economy and other requirements of high-end market A-class vehicles and off-road pickup trucks are met.

[0098] The front differential 14 and the rear differential 15 are one of the key components in the hybrid power system, and its main function is to coordinate the rotation speeds of the front wheels and the rear wheels of the vehicle, so that the vehicle can not slip when driving on a curve. Specifically, when the vehicle is driving, the outside wheels have the phenomenon of sliding and dragging, and the inside wheels have the phenomenon of sliding, so the two driving wheels will generate two additional forces in opposite directions, resulting in different rotation speeds of the two wheels. The front differential 14 and the rear differential 15 adjust the rotation speed of the wheels to eliminate this imbalance and ensure that the vehicle drives stably and safely.

[0099] In an embodiment, as shown in FIGS. 1-4, 9-16 and 21-24, the vehicle further comprises 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 differential 14; and the rear drive clutch 13 is arranged between the rear end of the power output shaft 4 and the rear differential 15.

[0100] As an example, the vehicle further comprises a front drive clutch 12 and / or a rear drive clutch 13, and specifically comprises three arrangement structures.

[0101] As shown in FIGS. 9, 10, 11, 12, 21, 22, 23 and 24, the first arrangement structure only has the front drive clutch 12 arranged between the front end of the power output shaft 4 and the front differential 14; by adjusting the combination or disconnection of the front drive clutch 12, the front drive clutch 12 in cooperation with the front differential 14 can control the front wheels to participate in driving or not to participate in driving; when the front drive clutch 12 is disconnected, the rear drive mode is formed; and when the front drive clutch 12 is connected, the four-wheel drive mode is formed.

[0102] The second arrangement only has the rear drive clutch 13 arranged between the rear end of the power output shaft 4 and the rear drive differential 15, and the rear drive differential 15 cooperates to control whether the rear wheels participate in driving or not by adjusting the combination or disconnection of the rear drive clutch 13; when the rear drive clutch 13 is disconnected, the front drive mode is formed; when the rear drive clutch 13 is combined, the four-wheel drive mode is formed, and the structure only provided with the rear drive clutch 13 is similar to the structure only provided with the front drive clutch 12, which is not described here.

[0103] As shown in FIGS. 1, 2, 3, 4, 13, 14, 15 and 16, the third arrangement simultaneously has the front drive clutch 12 and the 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, and the front drive clutch 12 is combined, and the rear drive clutch 13 is combined, which can drive through the front wheels or the rear wheels, realizing the four-wheel drive mode; the front drive clutch 12 is disconnected, and the rear drive clutch 13 is combined, which can drive through the rear wheels, realizing the rear drive mode; the front drive clutch 12 is combined, and the rear drive clutch 13 is disconnected, which can drive through the front wheels, realizing the front drive mode.

[0104] The engine 1, the first motor 2 and the second motor 6 cooperate to combine the hybrid power system into four power modes of engine direct drive mode, power split mode, parallel mode and pure electric mode to provide power for the power output shaft 4, the power output shaft 4 can only drive the front wheels to rotate, forming the front drive mode; can only drive the rear wheels to rotate, forming the rear drive mode; can drive the front wheels and the rear wheels to rotate at the same time, forming the four-wheel drive mode; such setting makes each of the four power modes correspond to three driving modes, that is, the hybrid power system forms twelve arrangement modes, and a set of electric drive electric control system realizes the mutual switching of the front drive, the rear drive and the four-wheel drive; the architecture is simple, the cost is low, the oil-mixed plug-in hybrid can be realized, and the requirements of power performance, economy and the like of high-end market A-class vehicles and off-road pickup trucks can be met.

[0105] The embodiment of the application provides a vehicle control method, as shown in FIGS. 1-25, applied to a vehicle, comprising:

[0106] Determine the target power mode;

[0107] If the target power mode is the engine direct drive mode, control the locking mechanism 5 to be locked, the engine 1 works, and the first motor 2 does not work;

[0108] If the target power mode is the power split mode, control the locking mechanism 5 to be opened, the engine 1 works, and control the first motor 2 to generate electricity.

[0109] As an example, the controller can acquire a power mode instruction, determine a target power mode according to the power mode instruction, and control the hybrid power system to work according to the target power mode. Specifically, when the hybrid power system is the hybrid power system described above including the engine 1, the first motor 2, the first planetary gear set 3, the power output shaft 4, and the lock mechanism 5, if the target power mode is the engine direct drive mode, the lock mechanism 5 is locked, i.e., the output shaft of the first motor 2 is locked, the engine 1 is controlled to work, and the engine 1 cannot drive the first motor 2 to rotate through the first planetary gear set 3, i.e., the first motor 2 does not work. At this time, the engine 1 can drive the power output shaft 4 to rotate through the first planetary gear set 3, so that the hybrid power system enters the engine direct drive mode. If the target power mode is the power split mode, the lock mechanism 5 is controlled to be opened, i.e., the output shaft of the first motor 2 can rotate freely, and the engine 1 is controlled to work. The engine 1 can drive the first motor 2 to rotate through the first planetary gear set 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 set 3, and the hybrid power system enters the power split mode. The hybrid power system in the example has a reasonable architecture design, can have both the power split mode and the engine direct drive mode, and ensures that the hybrid power system enters high-efficiency operation in all working conditions, so as to improve the economy.

[0110] In an embodiment, as shown in FIGS. 1-25, the vehicle control method further includes:

[0111] If the target power mode is the engine direct drive mode, the second motor 6 is also controlled not to work.

[0112] If the target power mode is the power split mode, the second motor 6 is also controlled to work.

[0113] If the target power mode is the parallel mode, the lock mechanism 5 is locked, the engine 1 is controlled to work, the first motor 2 does not work, and the second motor 6 works.

[0114] As an example, the controller can obtain a power mode instruction, determine a target power mode according to the power mode instruction, and control the hybrid power system to operate according to the target power mode. Specifically, when the hybrid power system is the hybrid power system including the engine 1, the first motor 2, the first planetary gear set 3, the power output shaft 4, the lockup 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 lockup mechanism 5 is controlled to be locked, the engine 1 is operated, the first motor 2 is not operated, the second motor 6 is not operated, and the engine 1 drives the power output shaft 4 to rotate through the first planetary gear set 3, so that the hybrid power system enters the engine direct drive mode. Alternatively, if the target power mode is the power split mode, the lockup mechanism 5 is controlled to be opened, the engine 1 is operated, the engine 1 can drive the first motor 2 to generate electricity through the first planetary gear set 3, the engine 1 can drive the power output shaft 4 to rotate through the first planetary gear set 3, and the second motor 6 is controlled to be operated, so that the second motor 6 drives the power output shaft 4 to rotate through the second planetary gear set 7, so that the hybrid power system enters the power split mode. Alternatively, if the target power mode is the parallel mode, the lockup mechanism 5 is controlled to be locked, the engine 1 is operated, the first motor 2 is not operated, and the second motor 6 is controlled to be operated, so that the engine 1 drives the power output shaft 4 to rotate through the first planetary gear set 3, and the second motor 6 drives the power output shaft 4 to rotate through the second planetary gear set 7, so that the hybrid power system enters the parallel mode. The hybrid power system in the example has a reasonable architecture design, and can have the power split mode, the engine direct drive mode, and the parallel mode, so that the hybrid power system ensures to enter the high-efficiency operation in all working conditions, and the economy is improved.

[0115] In an embodiment, as shown in FIGS. 1-25, the vehicle control method further includes:

[0116] If the target power mode is the engine direct drive mode, the engagement device 10 is further controlled to be engaged, and the gear lock 11 is controlled to be opened.

[0117] If the target power mode is the power split mode, the engagement device 10 is further controlled to be engaged, and the gear lock 11 is controlled to be opened.

[0118] If the target power mode is the parallel mode, the engagement device 10 is further controlled to be engaged, and the gear lock 11 is controlled to be opened.

[0119] If the target power mode is the pure electric mode, the engagement device 10 is controlled to be disengaged, the gear lock 11 is controlled to be locked, the lockup mechanism 5 is controlled to be opened, the first motor 2 is operated, and the second motor 6 is operated.

[0120] If the target power mode is the energy recovery mode, the controller controls the engagement device 10 to be disengaged, the gear lock 11 to be opened, the lockup mechanism 5 to be opened, the first motor 2 to be inoperative, and the second motor 6 to be operative; or, the controller controls the engagement device 10 to be disengaged, the gear lock 11 to be locked, the lockup mechanism 5 to be opened, the first motor 2 to be operative, and the second motor 6 to be inoperative.

[0121] As an example, the controller can acquire a power mode instruction, determine a target power mode according to the power mode instruction, and control the hybrid power system to operate according to the target power mode. Specifically, when the hybrid power system is the hybrid power system including the engine 1, the first motor 2, the first planetary gear set 3, the power output shaft 4, the lockup mechanism 5, the second motor 6, the second planetary gear set 7, the engagement device 10, and the gear lock 11, the controller responds to the power mode instruction to make the hybrid power system enter the target power mode, which is the engine direct drive mode, the power split mode, the parallel mode, the pure electric mode, or the energy recovery mode. The power mode instruction is an instruction for switching between different power modes. The power mode instruction can be an instruction for a user to actively control the hybrid power system to enter a certain power mode, or an instruction for the hybrid power system to switch to a certain power mode in an intelligent driving process. The power mode instruction can be determined autonomously according to actual conditions.

[0122] The controller controls the engagement device 10 to be engaged, the lockup mechanism 5 to be locked, and the gear lock 11 to be opened, and the engine 1 is operative, the first motor 2 is inoperative, and the second motor 6 is inoperative. The engine 1 provides power to drive the output gear 9 through the engagement device 10, the output gear 9 drives the first planetary gear set 3, and the first planetary gear set 3 drives the power output shaft 4, so that the hybrid power system enters the engine direct drive mode.

[0123] The controller controls the engagement device 10 to be engaged, the lockup mechanism 5 to be opened, and the gear lock 11 to be opened, and the engine 1 is operative, the first motor 2 generates electricity, and the second motor 6 is operative. The engine 1 provides power to drive the output gear 9 through the engagement device 10, and the output gear 9 drives the first planetary gear set 3 to generate electricity. The second motor 6 provides power to drive the second planetary gear set 7, and the second planetary gear set 7 can directly drive the power output shaft 4 or be connected to the first planetary gear set 3 to drive the power output shaft 4 together, so that the hybrid power system enters the power split mode.

[0124] The control engagement device 10 is combined, the locking mechanism 5 is locked, the gear lock 11 is opened, the engine 1 works, the first motor 2 does not work, the second motor 6 works, the engine 1 provides power to drive the output gear 9 to rotate through the engagement device 10, the output gear 9 drives the first planetary gear set 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 set 7 to rotate, which can directly drive the power output shaft 4 to rotate, or can be connected with the first planetary gear set 3 as a whole to jointly drive the power output shaft 4 to rotate, so that the hybrid power system enters the parallel mode.

[0125] 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 (drives), the second motor 6 works, the power provided by the first motor 2 drives the first planetary gear set 3 to rotate, the first planetary gear set 3 drives the power output shaft 4 to rotate, and the power provided by the second motor 6 drives the second planetary gear set 7 to rotate, which can directly drive the power output shaft 4 to rotate, or can be connected with the first planetary gear set 3 as a whole to jointly drive the power output shaft 4 to rotate, so that the hybrid power system enters the pure electric mode.

[0126] The control engagement device 10 is disconnected, the locking mechanism 5 is opened, the gear lock 11 is opened, the engine 1 does not work, the first motor 2 does not work, and the second motor 6 works, so that the hybrid power system enters the energy recovery mode. Alternatively, 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 does not work, so that the hybrid power system enters the energy recovery mode.

[0127] For example, when the hybrid power system is a two-axle four-wheel drive system high-end car or a three-axle four-wheel drive system off-road or pickup truck, the first engagement device (mechanical clutch or electromagnetic clutch) can be replaced by a second engagement device (electromagnetic clutch or engine synchronizer); the front drive clutch 12 and the rear drive clutch 13 can be optional, which changes the driving mode.

[0128] As an example, the switching from engine direct drive mode to power split mode can be realized by controlling the state switching of the locking mechanism 5 and the engagement device 10, and the working process is as follows: first, disconnect the engagement device 10, the first motor 2 rotates independently and is decoupled from the first planetary gear set 3, because the star gear train has two degrees of freedom, the first planetary gear set 3 is powered by the second motor 6 at this time; At this time, the first motor 2 is decelerated to zero, the output shaft of the first motor 2 is locked using the locking mechanism 5, the engine 1 speed is adjusted, the engagement device 10 is combined, the second motor 6 is disconnected, and the switching from power split mode to engine direct drive mode is completed, at this time the engine 1 provides power to drive the output gear 9 to rotate through the engagement device 10, the output gear 9 drives the first planetary gear set 3 to rotate, thereby providing power to the power output shaft 4, this power mode is engine direct drive mode.

[0129] 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 lock mechanism 5 and the engagement device 10, and 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 through the engagement device 10, the output gear 9 drives the first planetary gear set 3 to rotate, thereby providing power to the power output shaft 4; the second motor 6 provides power to drive the second planetary gear set 7 to rotate, the second planetary gear set 7 drives the first planetary gear set 3 to rotate, thereby providing power to the power output shaft 4, and this power mode is the parallel mode; then the engagement device 10 is disconnected, the lock mechanism 5 is opened, the speed of the engine 1 is adjusted, then the engagement device 10 is combined, the switching from the engine direct drive mode to the power split mode is completed, the engine 1 provides power to drive the output gear 9 through the engagement device 10, 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; the first motor 2 provides power to drive the first planetary gear set 3 to rotate, thereby providing power to the power output shaft 4; the second motor 6 provides power to drive the second planetary gear set 7 to rotate, the second planetary gear set 7 can directly drive the power output shaft 4 to rotate, or can be connected with the first planetary gear set 3 to drive the power output shaft 4 to rotate together, and this power mode is the power split mode.

[0130] In an embodiment, as shown in FIGS. 1-25, the vehicle control method further comprises:

[0131] determining a target drive mode;

[0132] if the target drive mode is the front drive mode, the front drive clutch 12 is combined and the rear drive clutch 13 is disconnected, or the front drive clutch 12 is not provided and the rear drive clutch 13 is disconnected;

[0133] if the target drive mode is the rear drive mode, the rear drive clutch 13 is combined and the front drive clutch 12 is disconnected, or the rear drive clutch 13 is not provided and the front drive clutch 12 is disconnected;

[0134] if the target drive mode is the four-wheel drive mode, the front drive clutch 12 and the rear drive clutch 13 are not provided, or the front drive clutch 12 and / or the rear drive clutch 13 are combined.

[0135] As an example, according to actual needs, a drive mode switching instruction is issued, and the controller controls the front drive clutch 12 and the rear drive clutch 13 to work so that the hybrid power system enters a target drive mode, the target drive mode being a front drive mode, a rear drive mode or an all-wheel drive mode; wherein the drive mode switching instruction is an instruction for switching between different drive modes, which can be an instruction for the user to actively control to enter a certain drive mode, and in the process of intelligent driving, it is also possible to switch to a certain drive mode for the actual vehicle condition, which can be determined autonomously according to the actual situation.

[0136] As shown in FIGS. 1, 2, 3, 4, 13, 14, 15 and 16, the front drive mode is a mode in which the front drive clutch 12 is engaged and the rear drive clutch 13 is disengaged, in which the front drive clutch 12 is adjusted to be engaged and the rear drive clutch 13 is adjusted to be disengaged, and the power output shaft 4 can drive the front wheels to rotate to realize front-wheel drive. Alternatively, the front drive mode is a mode in which the front drive clutch 12 is disengaged and the rear drive clutch 13 is disengaged, in which the front drive clutch 12 is disengaged and the rear drive clutch 13 is adjusted to be disengaged, and the power output shaft 4 can directly drive the front wheels to rotate to realize front-wheel drive.

[0137] As shown in FIGS. 1, 2, 3, 4, 13, 14, 15 and 16, the rear drive mode is a mode in which the rear drive clutch 13 is engaged and the front drive clutch 12 is disengaged, in which the rear drive clutch 13 is adjusted to be engaged and the front drive clutch 12 is adjusted to be disengaged, and the power output shaft 4 can drive the rear wheels to rotate to realize rear-wheel drive. Alternatively, as shown in FIGS. 9, 10, 11, 12, 21, 22, 23 and 24, the rear drive mode is a mode in which the rear drive clutch 13 is disengaged and the front drive clutch 12 is disengaged, in which the rear drive clutch 13 is disengaged and the front drive clutch 12 is adjusted to be disengaged, and the power output shaft 4 can directly drive the rear wheels to rotate to realize rear-wheel drive.

[0138] As shown in FIG. 5, FIG. 6, FIG. 7, FIG. 8, FIG. 17, FIG. 18, FIG. 19 and FIG. 20, the four-wheel drive mode is the mode without front drive clutch 12 and rear drive clutch 13, in which the power output shaft 4 can drive the front wheels and the rear wheels at the same time, and the front wheels and the rear wheels can be driven at the same time; or as shown in FIG. 1-4, FIG. 9-12, FIG. 13-16, FIG. 21-24, the four-wheel drive mode is the mode in which the front drive clutch 12 and / or the rear drive clutch 13 are combined, which includes three cases; the first case is that there is no front drive clutch 12, but there is a rear drive clutch 13, and the rear drive clutch 13 is adjusted to be combined, so that the power output shaft 4 can drive the front wheels and the rear wheels at the same time, and the front wheels and the rear wheels can be driven at the same time; the second case is that there is no rear drive clutch 13, but there is a front drive clutch 12, and the front drive clutch 12 is adjusted to be combined, so that the power output shaft 4 can drive the front wheels and the rear wheels at the same time, and the front wheels and the rear wheels can be driven at the same time; the third case is that there is a front drive clutch 12 and a rear drive clutch 13, and the front drive clutch 12 and the rear drive clutch 13 are adjusted to be combined, so that the power output shaft 4 can drive the front wheels and the rear wheels at the same time, and the front wheels and the rear wheels can be driven at the same time.

[0139] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A hybrid powertrain system, wherein, The hybrid power system comprises an engine, a first motor, a second motor, a first planetary gear set, a second planetary gear set, a power output shaft and a locking mechanism; The engine is in transmission connection with the first planetary gear set, and the first planetary gear set is connected with the power output shaft; The output shaft of the first motor is connected with the first planetary gear set, the second motor is connected with the second planetary gear set, and the second planetary gear set is connected with the first planetary gear set and the power output shaft; The first motor, the second motor, the first planetary gear set and the second planetary gear set are coaxially arranged; The locking mechanism is connected with the output shaft of the first motor, and is used for controlling the output shaft of the first motor to be in linkage or not in linkage with the first planetary gear set.

2. The hybrid system according to claim 1, wherein, The first planetary gear set and the second planetary gear set are located between the first motor and the second motor.

3. The hybrid system of claim 1, wherein, The first planetary gear set comprises a first sun gear, a first planetary gear, a first planetary carrier and a first ring gear 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 is in meshing with the first sun gear and the first ring gear structure; The first planetary carrier is in transmission connection with the engine; The first ring gear structure is connected with the second planetary gear set and the power output shaft, and can rotate freely.

4. The hybrid system of claim 3, wherein, The second planetary gear set comprises a second sun gear, a second planetary gear and a second ring gear structure; The second sun gear is sleeved on the output shaft of the second motor; The second planetary gear is in meshing with the second sun gear; Any one of the first ring gear structure and the second ring gear structure is connected with the second planetary gear, and the other one is in meshing with the second planetary gear, and the second ring gear structure is locked.

5. The hybrid system of claim 4, wherein, The first ring gear structure comprises a ring gear carrier, and the second ring gear structure comprises a second ring gear, the ring gear carrier is connected with the second planetary gear, and the second ring gear is in meshing with the second planetary gear; Alternatively, the first ring gear structure comprises a common ring gear, and the second ring gear structure comprises a second planetary carrier, the second planetary carrier is connected with the second planetary gear, and the common ring gear is in meshing with the second planetary gear.

6. The hybrid system of claim 1, wherein, The power output shaft is arranged concentrically 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 with the first planetary gear set and the second planetary gear set through a transmission assembly.

7. The hybrid system of claim 6, wherein, The transmission assembly comprises a third output gear and a transfer gear, the transfer gear is arranged on the ring gear carrier of the first planetary gear set, and the third output gear is arranged on the power output shaft and is in meshing with the transfer gear.

8. The hybrid system of claim 6, wherein, The transmission assembly comprises 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 in meshing with the ring gear hub.

9. The hybrid system of claim 1, wherein, The hybrid power system further comprises an output gear and an engagement device; The output shaft of the engine is connected with the output gear through the engagement device, and the output gear is in meshing with the first planetary gear set; 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 system of claim 1, wherein, The hybrid power system further comprises a gear lock installed on the output gear for switching the engine drive or the first motor drive.

11. The hybrid system of claim 9, wherein, The first planetary gear set comprises a first carrier and first carrier gears arranged on the first carrier, the first carrier gears comprising a first input gear; the output gear comprises a first output gear connected to the output shaft of the engine through the engagement device, and the first output gear meshes with the first input gear; Alternatively, the first planetary gear set comprises a first carrier and first carrier gears arranged on the first carrier, the first carrier gears comprising a first input gear and a second input gear; The output gear comprises a first output gear and a second output gear, the first output gear meshes with the first input gear, and the second output gear meshes with the second input gear, The engagement device is arranged between the first output gear and the second output gear, connected to the output shaft of the engine, and used to combine with the first output gear or the second output gear.

12. A vehicle, wherein, The vehicle comprises a front drive differential, a rear drive differential and the hybrid power system of any one of claims 1-11. 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 set.

13. The vehicle of claim 12, wherein, 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.

14. A vehicle control method, wherein, The vehicle of any one of claims 12-13 comprises: determining a target power mode; if the target power mode is the engine direct drive mode, controlling the lockup mechanism to be locked, the engine to work and the first motor to not work; if the target power mode is the power split mode, controlling the lockup mechanism to be opened, the engine to work and the first motor to generate electricity.

15. The vehicle control method according to claim 14, wherein The vehicle control method further comprises: if the target power mode is the engine direct drive mode, further controlling the second motor to not work; if the target power mode is the power split mode, further controlling the second motor to work; if the target power mode is the parallel mode, controlling the lockup mechanism to be locked, the engine to work, the first motor to not work and the second motor to work.

16. The vehicle control method according to claim 15, wherein The vehicle control method further comprises: if the target power mode is the engine direct drive mode, further controlling the engagement device to be combined and the gear lock to be opened; if the target power mode is the power split mode, further controlling the engagement device to be combined and the gear lock to be opened; if the target power mode is the parallel mode, further controlling the engagement device to be combined and the gear lock to be opened; If the target power mode is the pure electric mode, the engagement device is controlled to be disconnected, the gear lock is controlled to be locked, the lock mechanism is controlled to be opened, the first motor is controlled to work, and the second motor is controlled to work. If the target power mode is the energy recovery mode, the engagement device is controlled to be connected, the gear lock is controlled to be opened, the lock mechanism is controlled to be opened, the first motor is controlled to be inoperative, and the second motor is controlled to work; or, the engagement device is controlled to be connected, the lock mechanism is controlled to be opened, the gear lock is controlled to be locked, the first motor is controlled to work, and the second motor is controlled to be inoperative.

17. The vehicle control method according to claim 15, wherein The vehicle control method further comprises: determining a target drive mode; if the target drive mode is the front drive mode, the front drive clutch is connected and the rear drive clutch is disconnected, or the front drive clutch is absent and the rear drive clutch is disconnected; if the target drive mode is the rear drive mode, the rear drive clutch is connected and the front drive clutch is disconnected, or the rear drive clutch is absent and the front drive clutch is disconnected; if the target drive mode is the four-wheel drive mode, the front drive clutch and the rear drive clutch are both absent, or the front drive clutch and / or the rear drive clutch are connected.

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