Power system, power assembly and vehicle

Abstract

The utility model provides a power system, a power assembly and a vehicle. The power system comprises an engine, a first transmission mechanism, a second transmission mechanism, a first motor and a second motor. The engine and the first transmission mechanism can be separated or connected, the first transmission mechanism is in transmission connection with the second transmission mechanism, and the second transmission mechanism is suitable for being in transmission connection with the differential mechanism. The first motor is in transmission connection with the first transmission mechanism, the second motor is in transmission connection with the second transmission mechanism, and at least one of the engine, the first motor and the second motor is suitable for outputting power to the second transmission mechanism. According to the utility model, at least one of the two motors and the engine outputs power, so that the variety of power driving modes is improved, and the device can be suitable for different driving scenes.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle drive technical field, concretely relates to a power system, power assembly and vehicle. BACKGROUND

[0002] With the continuous development of new energy automobile technology, hybrid power technology has been widely concerned, and it is a kind of technology different from traditional new energy vehicle drive, that is, on the basis of reserving traditional engine, auxiliary power is provided by using electric motor, and the system can be flexibly regulated according to the actual operation condition of vehicle, so that the engine is always kept in the working area with the best comprehensive performance, which can effectively reduce its oil consumption and emission, and solve the problem of poor endurance of pure electric vehicle.

[0003] In the conventional hybrid power technology, one engine and one motor are usually configured, and the driving mode that can be realized is limited. UTILITY MODEL CONTENT

[0004] The utility model embodiment aims at providing a power system, power assembly and vehicle, which can solve the problem of limited power driving mode of conventional hybrid power technology.

[0005] In order to solve the above technical problems, the utility model is realized as follows:

[0006] Firstly, the utility model embodiment provides a power system, which comprises an engine, a first transmission mechanism, a second transmission mechanism, a first motor and a second motor.

[0007] The engine and the first transmission mechanism can be separated or connected, the first transmission mechanism is in transmission connection with the second transmission mechanism, and the second transmission mechanism is suitable for transmission connection with a differential.

[0008] The first motor is in transmission connection with the first transmission mechanism, the second motor is in transmission connection with the second transmission mechanism, and at least one of the engine, the first motor and the second motor is suitable for outputting power to the second transmission mechanism.

[0009] Optionally, the second transmission mechanism comprises a first transmission assembly, a second transmission assembly and a gear shifter.

[0010] The gear shifter is in transmission connection with the first transmission mechanism, the gear shifter can be connected with the first transmission assembly or the second transmission assembly, and the first transmission assembly and the second transmission assembly have different transmission ratios.

[0011] Optionally, it further comprises a clutch.

[0012] The clutch is connected between the engine and the first transmission mechanism, and is adapted to engage or disengage the engine and the first transmission mechanism.

[0013] Optionally, the first transmission mechanism comprises a sun gear, a planetary gear assembly and a ring gear.

[0014] The motor shaft of the first motor is in transmission connection with the sun gear, the sun gear is in meshing connection with the planetary gear assembly, the planetary gear assembly is in transmission connection with the clutch, the ring gear is sleeved outside the sun gear and the planetary gear assembly, the ring gear is in meshing connection with the planetary gear assembly, and the ring gear is in transmission connection with the gear shifter.

[0015] Optionally, the first transmission mechanism further comprises a transmission.

[0016] The transmission comprises a first connecting part and a second connecting part, the first connecting part is in transmission connection with the ring gear and the gear shifter, the second connecting part is in transmission connection with the planetary gear assembly, and the first connecting part and the second connecting part can be disengaged or engaged.

[0017] Optionally, the first transmission assembly comprises a first driving gear and a first driven gear in meshing connection with each other, and the second transmission assembly comprises a second driving gear and a second driven gear in meshing connection with each other.

[0018] The gear shifter can be engaged with the first driving gear or the second driving gear.

[0019] Optionally, the engine, the first motor, the first transmission mechanism, the first driving gear, the second driving gear and the second motor are coaxially arranged.

[0020] Optionally, the second motor is in transmission connection with the first driving gear or the second driving gear.

[0021] Optionally, the motor shaft of the second motor is sleeved on the gear shaft of the first driving gear or the gear shaft of the second driving gear.

[0022] Optionally, a shock absorber is further included.

[0023] The shock absorber is connected between the clutch and the engine.

[0024] Optionally, the second transmission mechanism further comprises a third transmission assembly.

[0025] The third transmission assembly is in transmission connection with the first transmission assembly and the second transmission assembly, and is adapted to be in transmission connection with the differential.

[0026] In a second aspect, the utility model embodiments further provide a power assembly, comprising the power system of any of the above.

[0027] In a third aspect, the utility model embodiments further provide a vehicle, comprising the power system or the power assembly of any of the above.

[0028] The power system provided by the utility model embodiments, therefore, when the engine is engaged with the first transmission mechanism, the engine works to output power to the first transmission mechanism, and when the engine is separated from the first transmission mechanism, the engine stops working and does not output power. The first transmission mechanism is in transmission connection with the second transmission mechanism. The utility model is provided with two motors, wherein the first motor is in transmission connection with the first transmission mechanism and can output power to the second transmission mechanism through the first transmission mechanism, and the second motor is in transmission connection with the second transmission mechanism and directly outputs power to the differential mechanism through the second transmission mechanism. Therefore, when the first motor and the second motor do not output power and the engine works, a pure engine driving mode can be realized, when the engine does not work and only the first motor outputs power, a single-motor pure electric driving mode driven by the first motor can be realized, when the engine does not work and only the second motor outputs power, a single-motor pure electric driving mode driven by the second motor can be realized, when the engine does not work and the first motor and the second motor output power, a double-motor pure electric driving mode can be realized, when the engine works, the first motor outputs power, or the engine works, the second motor outputs power, or the engine works, the first motor and the second motor output power, an oil-electric hybrid driving mode can be realized. Since two motors are arranged and the second motor is directly in transmission connection with the second transmission mechanism, the power output path is simplified. The two motors and at least one of the engines output power, the types of power driving modes are improved, and the power system can be applicable to different driving scenes.

[0029] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, the specific embodiments of the utility model can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described below. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, wherein:

[0031] Figure 1 is the power system schematic diagram provided by the utility model embodiments;

[0032] Figure 2 is the first engine driving mode principle diagram of the utility model embodiments;

[0033] Figure 3 is a third engine driving mode principle diagram of the embodiment of the utility model;

[0034] Figure 4 is a third engine driving mode principle diagram of the embodiment of the utility model;

[0035] Figure 5 is a fourth engine driving mode principle diagram of the embodiment of the utility model;

[0036] Figure 6 is a first pure electric driving mode principle diagram of the embodiment of the utility model;

[0037] Figure 7 is a second pure electric driving mode principle diagram of the embodiment of the utility model;

[0038] Figure 8 is a third pure electric driving mode principle diagram of the embodiment of the utility model;

[0039] Figure 9 is a first hybrid driving mode principle diagram of the embodiment of the utility model;

[0040] Figure 10 is a second hybrid driving mode principle diagram of the embodiment of the utility model;

[0041] Figure 11 is a series driving mode principle diagram of the embodiment of the utility model;

[0042] Figure 12 is a second structure schematic view of the power system provided by the embodiment of the utility model;

[0043] Figure 13 is a third structure schematic view of the power system provided by the embodiment of the utility model;

[0044] Figure 14 is a fourth structure schematic view of the power system provided by the embodiment of the utility model;

[0045] Figure 15 is a fifth structure schematic view of the power system provided by the embodiment of the utility model.

[0046] Explanation of reference signs:

[0047] 1-engine, 2-first transmission mechanism, 21-sun gear, 22-ring gear, 231-planet gear, 232-carrier, 24-transmission, 241-first connecting part, 242-second connecting part, 3-second transmission mechanism, 31-first transmission assembly, 311-first driving gear, 312-first driven gear, 32-second transmission assembly, 321-second driving gear, 322-second driven gear, 33-shifting device, 34-third transmission assembly, 341-third driving gear, 342-third driven gear, 35-fourth transmission assembly, 351-fourth driving gear, 352-fourth driven gear, 41-first motor, 42-second motor, 5-clutch, 6-shock absorber, 7-differential, 71-first half shaft, 72-second half shaft, 81-first transmission shaft, 82-second transmission shaft, 83-third transmission shaft. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0049] The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a particular order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" and the like are generally of a kind, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in a "or" relationship.

[0050] The power system, power assembly and vehicle provided by the embodiments of the present application will be described in detail below with reference to the drawings, through specific embodiments and application scenarios.

[0051] Reference Figure 1The utility model embodiment provides a kind of power system, including engine 1, first transmission mechanism 2, second transmission mechanism 3, first motor 41 and second motor 42;The engine 1 can be separated or engaged between the first transmission mechanism 2, the first transmission mechanism 2 with the second transmission mechanism 3 transmission connection, the second transmission mechanism 3 is suitable for transmission connection with differential 7;The first motor 41 with the first transmission mechanism 2 transmission connection, the second motor 42 with the second transmission mechanism 3 transmission connection, at least one in the engine 1, the first motor 41 and the second motor 42 is suitable for power output to the second transmission mechanism 3.

[0052] Specifically, as shown in Figure 1 The engine 1 and the first transmission mechanism 2 can be separated or engaged: when the engine 1 and the first transmission mechanism 2 are engaged, the engine 1 works, and power is output to the first transmission mechanism 2; when the engine 1 and the first transmission mechanism 2 are separated, the engine 1 stops working and does not output power. The first transmission mechanism 2 is in transmission connection with the second transmission mechanism 3, and the second transmission mechanism 3 is suitable for transmission connection with the differential 7. This embodiment is provided with two motors, wherein the first motor 41 is in transmission connection with the first transmission mechanism 2, and the power of the first motor 41 is transmitted to the second transmission mechanism 3 through the first transmission mechanism 2. The second motor 42 is in transmission connection with the second transmission mechanism 3, and the power of the second motor 42 is directly output to the second transmission mechanism 3, which simplifies the power output path on the basis of realizing the hybrid drive function. Since the second transmission mechanism 3 is suitable for transmission connection with the differential 7, at least one of the engine 1, the first motor 41 and the second motor 42 outputs power in the path of power transmission to the differential 7 and output to the wheel end, which improves the richness of the power drive mode. Due to the different positions, the second motor 42 can be coupled or decoupled with the engine 1 and the first motor 41, and the second motor 42 can independently operate to output power. It should be noted that the transmission connection described in this embodiment takes the transmission connection between the first transmission mechanism 2 and the second transmission mechanism 3 as an example, the first transmission mechanism 2 and the second transmission mechanism 3 can be directly connected or indirectly connected through mechanical transmission components, and the mechanical transmission components include but are not limited to gear mechanism, worm gear mechanism or connecting rod mechanism, which outputs the power of the first transmission mechanism 2 to the second transmission mechanism 3.

[0053] In some embodiments, when the first motor 41 and the second motor 42 do not output power, the engine 1 works, the pure engine driving mode can be realized; when the engine 1 does not work and only the first motor 41 outputs power, the single motor pure electric driving mode driven by the first motor 41 can be realized; when the engine 1 does not work and only the second motor 42 outputs power, the single motor pure electric driving mode driven by the second motor 42 can be realized; when the engine 1 does not work and the first motor 41 and the second motor 42 output power, the double motor pure electric driving mode can be realized; when the engine 1 works, the first motor 41 outputs power, or the engine 1 works, the second motor 42 outputs power, or the engine 1 works, the first motor 41 and the second motor 42 output power, the oil-electric hybrid driving mode can be realized.

[0054] The power system provided in the embodiment of the utility model, set up two different motor connection position, two motor and at least one output power in engine, promoted the kind of power driving mode, can be applicable to different driving scene.

[0055] Optionally, referring to Figure 1 , the second transmission mechanism 3 includes a first transmission assembly 31, a second transmission assembly 32 and a gear shifter 33; the gear shifter 33 is in transmission connection with the first transmission mechanism 2, and the gear shifter 33 can be engaged with the first transmission assembly 31 or the second transmission assembly 32; the first transmission assembly 31 and the second transmission assembly 32 have different transmission ratios.

[0056] Specifically, as Figure 1 shown, the gear shifter 33 is in transmission connection with the first transmission mechanism 2, and the gear shifter 33 is engaged with the first transmission assembly 31 or the second transmission assembly 32. The first transmission assembly 31 and the second transmission assembly 32 have different transmission ratios, so that when the gear shifter 33 is engaged with the first transmission assembly 31 and the gear shifter 33 is engaged with the second transmission assembly 32, the rotational speed output by the power system is different. Therefore, the embodiment adopts the gear shifter 33 to engage with transmission assemblies having different transmission ratios, so as to realize two-gear power output. The first transmission assembly 31 and the second transmission assembly 32 can adopt a gear transmission mechanism or a worm gear transmission mechanism. The gear shifter 33 can adopt a sliding gear shifting mode. As Figure 15 shown, a single-gear power adjustment mode is realized, and only the first transmission assembly 31 is designed.

[0057] Optionally, referring to Figure 1 , further comprising a clutch 5; the clutch 5 is connected between the engine 1 and the first transmission mechanism 2, and the clutch 5 is adapted to engage or separate the engine 1 and the first transmission mechanism 2.

[0058] Specifically, as Figure 1As shown, the first clutch part of the clutch 5 is in transmission connection with the first transmission mechanism 2, and the second clutch part of the clutch 5 is in transmission connection with the engine 1. When the first clutch part is engaged with the second clutch part through clutch operation, the clutch is engaged, the engine 1 is simultaneously in operation, and the output power of the engine 1 is transmitted to the first transmission mechanism 2; when the first clutch part is disengaged from the second clutch part through clutch operation, the clutch is disengaged, the engine 1 is simultaneously stopped, and the output power is no longer transmitted. Therefore, by providing the clutch 5, the working state of the engine 1 is switched to realize various power driving modes.

[0059] Optionally, referring to Figure 1 , the first transmission mechanism 2 comprises a sun gear 21, a planetary gear assembly, and a ring gear 22; the motor shaft of the first motor 41 is in transmission connection with the sun gear 21, the sun gear 21 is in meshing connection with the planetary gear assembly, the planetary gear assembly is in transmission connection with the clutch, the ring gear 22 is sleeved outside the sun gear 21 and the planetary gear assembly, the ring gear 22 is in meshing connection with the planetary gear assembly, and the ring gear 22 is in transmission connection with the gear shifter 33.

[0060] Specifically, as shown in Figure 1 , the first transmission mechanism 2 is a planetary gear transmission mechanism, which comprises a sun gear 21, a planetary gear assembly, and a ring gear 22. The planetary gear assembly comprises a planet gear 231 and a planet carrier 232 which are fixedly connected. The clutch 5 is in transmission connection with the planet carrier 232 through a first transmission shaft 81. The motor shaft of the first motor 41 is sleeved on the first transmission shaft 81, and the sun gear 21 is arranged on the first transmission shaft 81, so that the motor shaft of the first motor 41 is in transmission connection with the sun gear 21. The sun gear 21 is located at the center of the planetary gear transmission mechanism, the sun gear 21 is in meshing connection with the planet gear 231, the ring gear 22 is sleeved outside the sun gear 21 and the planet gear 231, the inside of the ring gear 22 is in meshing connection with the planet gear 231, and the outside of the ring gear 22 is in transmission connection with the gear shifter 33 through a second transmission shaft 82 and a third transmission shaft 83. The planetary gear transmission mechanism can realize a certain transmission ratio through the relative rotation among the sun gear 21, the planet gear 231, and the ring gear 22, and the planetary gear transmission mechanism adopts an internal meshing mode, which reduces the space occupation size and is beneficial to the volume lightening of the power assembly.

[0061] Optionally, referring to Figure 1 , the first transmission mechanism 2 further comprises a transmission 24; the transmission 24 comprises a first connecting part 241 and a second connecting part 242, the first connecting part 241 is in transmission connection with the ring gear 22 and the gear shifter 33, the second connecting part 242 is in transmission connection with the planetary gear assembly, and the first connecting part 241 and the second connecting part 242 can be separated or engaged.

[0062] Specifically, as shown in Figure 1The transmission 24 is used in cooperation with the planetary gear mechanism. The transmission 24 includes a first connecting part 241 and a second connecting part 242. One side of the first connecting part 241 is connected in transmission with the gear shifter 33 through the second transmission shaft 82, and the other side is connected in transmission with the ring gear 22 through the third transmission shaft 83. The second connecting part 242 is connected in transmission with the planet carrier 232. The first connecting part 241 and the second connecting part 242 can be in engagement or disengagement. When the first connecting part 241 and the second connecting part 242 are engaged, the ring gear 22 and the planet carrier 232 do not rotate relative to each other, the planetary gear mechanism rotates as a whole, and the output transmission ratio is 1. When the first connecting part 241 and the second connecting part 242 are disengaged, the ring gear 22 and the planet carrier 232 rotate relative to each other, and the parts of the planetary gear mechanism rotate relative to each other, and a certain transmission ratio is output. The cooperation between the transmission 24 and the planetary gear mechanism realizes different transmission ratios and outputs power at different speeds. Figure 14 The power system without the transmission 24 is shown. The power is output from the planetary gear mechanism via the sun gear 21 - the planet gear 231 - the ring gear 22.

[0063] In some embodiments, as Figure 2 The first engine driving mode, i.e., the engine first gear mode, is shown. At this time, the first motor 41 and the second motor 42 do not work, the clutch 5 is engaged, the engine 1 works, the first connecting part 241 and the second connecting part 242 of the transmission 24 are engaged, the planetary gear mechanism rotates as a whole, the output transmission ratio is 1, and the gear shifter 33 is engaged with the first transmission assembly 31. The engine 1 outputs power, and the power transmission path is: the first transmission mechanism 2 - the clutch 5 - the first transmission assembly 31 - the third transmission assembly 34 - the fourth transmission assembly 35 - the differential 7. In this mode, all the power output by the engine 1 is used to drive the wheels to rotate.

[0064] As Figure 3 The second engine driving mode, i.e., the engine second gear mode, is shown. At this time, the first motor 41 and the second motor 42 do not work, the clutch 5 is engaged, the engine 1 works, the first connecting part 241 and the second connecting part 242 of the transmission 24 are engaged, the planetary gear mechanism rotates as a whole, the transmission ratio is 1, and the gear shifter 33 is engaged with the second transmission assembly 32. The engine 1 outputs power, and the power transmission path is: the first transmission mechanism 2 - the clutch 5 - the second transmission assembly 32 - the third transmission assembly 34 - the fourth transmission assembly 35 - the differential 7. In this mode, all the power output by the engine 1 is used to drive the wheels to rotate. The engine driving mode is used in the case of high-speed driving or high-power output.

[0065] As Figure 4The third engine driving mode, i.e. ECVT (Electric Continuously Variable Transmission) first gear mode, is shown. At this time, the second motor 42 does not work, the clutch 5 is engaged, the engine 1 works, the first motor 41 does not output power, but is driven by the engine 1 to generate electricity, the first connecting part 241 and the second connecting part 242 of the transmission 24 are separated, the planetary gear mechanism has a certain transmission ratio, and the shift lever 33 is engaged with the first transmission assembly 31. 70% of the power output by the engine 1 is used to drive the wheels, and 30% of the power is used to drive the first motor 41 to generate electricity. The motor shaft of the first motor 41 is driven by the sun gear 21 to rotate to generate electricity. The power transmission path of the power output by the engine 1 for driving the wheels is: carrier 232-ring gear 22-first transmission assembly 31-third transmission assembly 34-fourth transmission assembly 35-differential 7. In this mode, the rotational speed can be increased due to the certain transmission ratio of the planetary gear mechanism, and part of the power output by the engine 1 can be used to drive the first motor 41 to generate electricity, thereby improving energy utilization.

[0066] As Figure 5 The fourth engine driving mode, i.e. ECVT second gear mode, is shown. At this time, the second motor 42 does not work, the clutch 5 is engaged, the engine 1 works, the first motor 41 does not output power, but is driven by the engine 1 to generate electricity, the first connecting part 241 and the second connecting part 242 of the transmission 24 are separated, the planetary gear mechanism has a certain transmission ratio, and the shift lever 33 is engaged with the second transmission assembly 32. 70% of the power output by the engine 1 is used to drive the wheels, and 30% of the power is used to drive the first motor 41 to generate electricity. The power transmission path of the power output by the engine 1 for driving the wheels is: carrier 232-ring gear 22-second transmission assembly 32-third transmission assembly 34-fourth transmission assembly 35-differential 7.

[0067] As Figure 6 The first pure electric driving mode, i.e. single motor driving mode, is shown. At this time, the clutch 5 is separated, the engine 1 does not work, the second motor 42 does not work, the first motor 41 outputs power, the first connecting part 241 and the second connecting part 242 of the transmission 24 are engaged, the planetary gear mechanism rotates as a whole, the transmission ratio is 1, and the shift lever 33 can be engaged with the first transmission assembly 31 or the second transmission assembly 32. In this embodiment, the shift lever 33 is engaged with the first transmission assembly 31. The power transmission path of the power output by the first motor 41 is: first transmission mechanism 2-clutch 5-first transmission assembly 31-third transmission assembly 34-fourth transmission assembly 35-differential 7.

[0068] As Figure 7The second pure electric drive mode, i.e. single motor drive mode, is shown. At this time, the clutch 5 is separated, the engine 1 is not working, the first motor 41 is not working, and the second motor 42 outputs power. The power output by the second motor has the following power transmission path: the first transmission assembly 31-the third transmission assembly 34-the fourth transmission assembly 35-the differential 7.

[0069] As Figure 8 The third pure electric drive mode, i.e. double motor drive mode, is shown. At this time, the clutch 5 is separated, the engine 1 is not working, the first motor 41 and the second motor 42 output power, the first connecting part 241 and the second connecting part 242 of the transmission 24 are engaged, the planetary gear mechanism rotates as a whole at the same time, the transmission ratio is 1, and the shift lever 33 can be engaged with the first transmission assembly 31 or the second transmission assembly 32. This embodiment takes the case where the shift lever 33 is engaged with the second transmission assembly 32 as an example, and there are two power transmission paths, wherein the power output by the first motor 41 has the following power transmission path: the first transmission mechanism 2-the clutch 5-the second transmission assembly 32-the third transmission assembly 34-the fourth transmission assembly 35-the differential 7; and the power output by the second motor 42 has the following power transmission path: the first transmission assembly 31-the third transmission assembly 34-the fourth transmission assembly 35-the differential 7. In the pure electric drive mode, the electric energy required by the motor is provided by the battery pack. The endurance mileage of the battery can be fully utilized, and the fuel consumption and emissions are reduced.

[0070] As Figure 9 The first hybrid drive mode is shown. At this time, the clutch 5 is engaged, the engine 1 is working, the first motor 41 does not output power but is driven by the engine 1 to generate electricity, the second motor 42 outputs power, the first connecting part 241 and the second connecting part 242 of the transmission 24 are separated, the planetary gear mechanism has a certain transmission ratio, and the shift lever 33 can be engaged with the first transmission assembly 31 or the second transmission assembly 32. This embodiment takes the case where the shift lever 33 is engaged with the first transmission assembly 31 as an example, and there are two power transmission paths, wherein the power output by the engine 1 for driving the wheels has the following power transmission path: the carrier 232-the ring gear 22-the first transmission assembly 31-the third transmission assembly 34-the fourth transmission assembly 35-the differential 7; and the power output by the second motor 42 has the following power transmission path: the first transmission assembly 31-the third transmission assembly 34-the fourth transmission assembly 35-the differential 7. At the same time, the motor shaft of the first motor 41 is driven by the sun gear 21 to rotate to generate electricity.

[0071] As Figure 10The second hybrid driving mode is shown. At this time, the clutch 5 is engaged, the engine 1 is working, the first motor 41 can be idling without outputting power or outputting power, the second motor 42 outputs power, the first connecting part 241 and the second connecting part 242 of the transmission 24 are engaged, the planetary gear mechanism rotates as a whole at the same time, and the output transmission ratio is 1. The first motor outputs power in this embodiment, and the shifter 33 is engaged with the second transmission assembly 32. The power transmission path of the engine 1 is: the first transmission mechanism 2-the clutch 5-the second transmission assembly 32-the third transmission assembly 34-the fourth transmission assembly 35-the differential 7. The power transmission path of the second motor 42 is: the first transmission assembly 31-the third transmission assembly 34-the fourth transmission assembly 35-the differential 7. The hybrid mode can automatically switch the power source according to actual needs, balance energy saving and performance, and adapt to more driving scenarios.

[0072] As shown in Figure 11 The series driving mode is shown. At this time, the shifter 33 is not working, the engine 1 outputs power to provide electric energy for the first motor 41, and the power of the wheel movement is provided by the second motor 42, and the power transmission path is: the first transmission assembly 31-the third transmission assembly 34-the fourth transmission assembly 35-the differential 7.

[0073] Optionally, referring to Figure 1 , the first transmission assembly 31 comprises a first driving gear 311 and a first driven gear 312 that are engaged with each other, and the second transmission assembly 32 comprises a second driving gear 321 and a second driven gear 322 that are engaged with each other; the shifter 33 can be engaged with the first driving gear 311 or the second driving gear 321.

[0074] Specifically, as shown in Figure 1 , the first transmission assembly 31 and the second transmission assembly 32 adopt a gear transmission form, the first transmission assembly 31 comprises a first driving gear 311 and a first driven gear 312 that are engaged with each other, the second transmission assembly 32 comprises a second driving gear 321 and a second driven gear 322 that are engaged with each other, and the engagement ratio between the first driving gear 311 and the first driven gear 312 is different from the engagement ratio between the second driving gear 321 and the second driven gear 322. Therefore, when the shifter 33 is engaged with different driving gears, the power output is different.

[0075] Optionally, referring to Figure 1 , the engine 1, the first motor 41, the first transmission mechanism 2, the first driving gear 311, the second driving gear 321, and the second motor 42 are coaxially arranged.

[0076] Specifically, as shown in Figure 1As shown, the engine 1, the damper 6, the clutch 5, the first motor 41, the sun gear 21 of the first transmission mechanism 2, the first driving gear 311, the second driving gear 321, the gear shifter 33, and the second motor 42 are coaxially arranged, thereby saving space and improving transmission efficiency.

[0077] Optionally, referring to Figure 1 and Figure 12 , the second motor 42 is in driving connection with the first driving gear 311 or the second driving gear 321.

[0078] Specifically, as shown in Figure 1 , the second motor 42 is in driving connection with the first driving gear 311, and the power output of the second motor 42 depends on the meshing ratio between the first driving gear 311 and the first driven gear 312. Figure 12 As shown in , the second motor 42 is in driving connection with the second driving gear 321, and the power output of the second motor 42 depends on the meshing ratio between the second driving gear 321 and the second driven gear 322.

[0079] Figure 12 Optionally, referring to Figure 13 , the motor shaft sleeve of the second motor 42 is arranged on the gear shaft of the first driving gear 311 or the gear shaft of the second driving gear 321.

[0080] Specifically, as shown in Figure 12 and Figure 13 , the motor shaft sleeve of the second motor 42 is arranged on the gear shaft, so that the second motor 42 is mainly driven, and energy can also be recovered through the rotation of the gear shaft.

[0081] Optionally, referring to Figure 1 , the damper 6 is further included; the damper 6 is connected between the clutch 5 and the engine 1.

[0082] Specifically, as shown in Figure 1 , the damper 6 is connected between the clutch 5 and the engine 1, so as to reduce the torsional stiffness of the joint part of the engine 1 and the clutch 5, and improve the stability of transmission.

[0083] Optionally, referring to Figure 1 , the second transmission mechanism 3 further includes a third transmission assembly 34; the third transmission assembly 34 is in driving connection with the first transmission assembly 31 and the second transmission assembly 32, and the third transmission assembly 34 is adapted to be in driving connection with the differential 7.

[0084] Specifically, as shown in Figure 1As shown, the third transmission assembly 34 comprises a third driving gear 341 and a third driven gear 342 which are engaged with each other. One end of the gear shaft of the third driving gear 341 is in driving connection with the first driven gear 312, and the other end is in driving connection with the second driven gear 322. The fourth transmission assembly 35 comprises a fourth driving gear 351 and a fourth driven gear 352. The third driven gear 342 is in driving connection with the fourth driving gear 351, the fourth driving gear 351 is in driving connection with the fourth driven gear 352, the fourth driven gear 352 is in driving connection with the differential 7, and the differential 7 outputs power through the first half shaft 71 and the second half shaft 72. The fourth driving gear 351 and the fourth driven gear 352 are helical gears.

[0085] The embodiment of the utility model further provides a power assembly, including the power system of any one of preceding description. Two motor and at least one output power in engine, promoted the kind of power drive mode, can be applicable to different driving scene.

[0086] The embodiment of the utility model further provides a vehicle, including the power system or power assembly of any one of preceding description. Through the switching between engine drive mode, pure electric drive mode and hybrid mode, adapt to different driving scene of vehicle.

[0087] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of another identical element in the process, method, article or device that includes the element.

[0088] The embodiments of the utility model are described above in combination with the drawings, but the utility model is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative but not restrictive, and the person skilled in the art can make many forms under the inspiration of the utility model without departing from the purpose of the utility model and the scope protected by the claims, which all belong to the protection of the utility model.

Claims

1. A power system, characterized by, The engine (1), the first transmission mechanism (2), the second transmission mechanism (3), the first motor (41) and the second motor (42) are included. The engine (1) is detachably connected with the first transmission mechanism (2), the first transmission mechanism (2) is drivingly connected with the second transmission mechanism (3), and the second transmission mechanism (3) is adapted to be drivingly connected with a differential (7). The first motor (41) is drivingly connected with the first transmission mechanism (2), the second motor (42) is drivingly connected with the second transmission mechanism (3), and at least one of the engine (1), the first motor (41) and the second motor (42) is adapted to output power to the second transmission mechanism (3).

2. The power system of claim 1, wherein, The second transmission mechanism (3) includes a first transmission assembly (31), a second transmission assembly (32) and a gear shifter (33). The gear shifter (33) is drivingly connected with the first transmission mechanism (2), the gear shifter (33) is adapted to be engaged with the first transmission assembly (31) or the second transmission assembly (32), and the first transmission assembly (31) and the second transmission assembly (32) have different transmission ratios.

3. The power system of claim 2, wherein, A clutch (5) is further included. The clutch (5) is connected between the engine (1) and the first transmission mechanism (2), and the clutch (5) is adapted to engage or separate the engine (1) and the first transmission mechanism (2).

4. The power system of claim 3, wherein, The first transmission mechanism (2) includes a sun gear (21), a planetary gear assembly and a ring gear (22). A motor shaft of the first motor (41) is drivingly connected with the sun gear (21), the sun gear (21) is engaged with the planetary gear assembly, the planetary gear assembly is drivingly connected with the clutch (5), the ring gear (22) is sleeved outside the sun gear (21) and the planetary gear assembly, the ring gear (22) is engaged with the planetary gear assembly, and the ring gear (22) is drivingly connected with the gear shifter (33).

5. The power system of claim 4, wherein, The first transmission mechanism (2) further includes a transmission (24). The transmission (24) includes a first connecting portion (241) and a second connecting portion (242), the first connecting portion (241) is drivingly connected with the ring gear (22) and the gear shifter (33), the second connecting portion (242) is drivingly connected with the planetary gear assembly, and the first connecting portion (241) and the second connecting portion (242) are detachably connected.

6. The power system of claim 2, wherein, The first transmission assembly (31) includes a first driving gear (311) and a first driven gear (312) engaged with each other, and the second transmission assembly (32) includes a second driving gear (321) and a second driven gear (322) engaged with each other. The gear shifter (33) is adapted to be engaged with the first driving gear (311) or the second driving gear (321).

7. The power system of claim 6, wherein, The engine (1), the first motor (41), the first transmission mechanism (2), the first driving gear (311), the second driving gear (321) and the second motor (42) are coaxially arranged.

8. The power system of claim 6, wherein, The second motor (42) is in driving connection with the first driving gear (311) or the second driving gear (321).

9. The power system of claim 8, wherein, The motor shaft sleeve of the second motor (42) is arranged on the gear shaft of the first driving gear (311) or the gear shaft of the second driving gear (321).

10. The power system of claim 3, wherein, Further comprising a shock absorber (6); The shock absorber (6) is connected between the clutch (5) and the engine (1).

11. The power system of claim 2, wherein, The second transmission mechanism (3) further comprises a third transmission assembly (34). The third transmission assembly (34) is in driving connection with the first transmission assembly (31) and the second transmission assembly (32), and the third transmission assembly (34) is adapted to be in driving connection with the differential (7).

12. A powertrain, characterized by, The power system according to any one of claims 1 to 11.

13. A vehicle characterized by comprising: The power system according to any one of claims 1 to 11, or the power assembly according to claim 12.

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