Power system and vehicle with same

Abstract

The utility model discloses a power system and a vehicle with the same. Belongs to the technical field of vehicles and comprises a transmission, a first motor, a second motor, a planetary gear mechanism, an engine, a first clutch and a second clutch, the transmission comprises a first input shaft, a second input shaft and an output shaft, the first input shaft and the second input shaft are both in transmission connection with the output shaft, and the first motor is in transmission connection with the first input shaft. The second motor is in transmission connection with the second input shaft, the planetary gear mechanism comprises a sun gear, a planet gear, a planet carrier and a gear ring, the engine is in transmission connection with the sun gear, the planet carrier is selectively in transmission connection with the first input shaft through a first clutch, and the gear ring is selectively in transmission connection with the second input shaft through a second clutch; the power system can achieve various different driving modes such as a pure electric mode, a parallel connection mode and a stepless speed change mode so as to meet different power requirements, and energy consumption of the power system is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, specifically, relate to a kind of power system and vehicle with it. BACKGROUND

[0002] For hybrid electric vehicle, its transmission is mostly single-gear transmission or two-gear transmission, which can realize less driving mode, cannot satisfy the optimal driving effect of engine and motor, leading to energy waste and high fuel consumption. SUMMARY

[0003] The utility model at least partly solves one of the above technical problems in the prior art. To this end, the utility model provides a power system, which can meet different power requirements and reduce energy consumption of the power system.

[0004] The utility model further provides a vehicle with the power system.

[0005] According to the power system of the utility model embodiment, the power system comprises a transmission, a first motor, a second motor, a planetary gear mechanism, an engine, a first clutch and a second clutch.

[0006] According to the power system of the utility model embodiment, by controlling the combination state of the first clutch and the second clutch, the power system can realize pure electric mode, parallel mode, stepless speed change mode and other different driving modes, so as to meet different power requirements, reduce energy consumption of the power system and improve the cruising range of the vehicle.

[0007] According to some embodiments of the utility model, the power system further comprises a first brake selectively locked with the planet carrier.

[0008] According to some embodiments of the utility model, the power system further comprises a second brake selectively locked with the ring gear.

[0009] According to some embodiments of the utility model, the power system further includes a controller, the first clutch, the second clutch, the first brake and the second brake are all in communication connection with the controller.

[0010] According to some embodiments of the utility model, the rated power of the first motor is different from the rated power of the second motor.

[0011] According to some embodiments of the utility model, the transmission further includes: a first transmission gear, the first transmission gear is sleeved on the first input shaft; a second transmission gear, the second transmission gear is sleeved on the first input shaft; a first gear shifter, the first gear shifter is in transmission connection with the first input shaft, and the first gear shifter is selectively combined with the first transmission gear and the second transmission gear; a first output gear, the first output gear is fixedly arranged on the output shaft, and the first output gear is in engagement with the first transmission gear; a second output gear, the second output gear is fixedly arranged on the output shaft, and the second output gear is in engagement with the second transmission gear.

[0012] According to some embodiments of the utility model, the transmission further includes: a third transmission gear, the third transmission gear is sleeved on the second input shaft, and the third transmission gear is in engagement with the first output gear; a fourth transmission gear, the fourth transmission gear is sleeved on the second input shaft, and the fourth transmission gear is in engagement with the second output gear; a second gear shifter, the second gear shifter is in transmission connection with the second input shaft, and the second gear shifter is selectively combined with the third transmission gear and the fourth transmission gear.

[0013] According to some embodiments of the utility model, the transmission ratio of the first transmission gear and the first output gear is i1, the transmission ratio of the second transmission gear and the second output gear is i2, the transmission ratio of the third transmission gear and the first output gear is i3, and the transmission ratio of the fourth transmission gear and the second output gear is i4, and the following relationship is met: i1≠i2≠i3≠i4.

[0014] According to some embodiments of the utility model, the first input shaft and the second input shaft are symmetrical relative to the axis of the output shaft.

[0015] The vehicle according to another aspect of the utility model includes the power system.

[0016] The vehicle according to the utility model can realize different driving modes such as pure electric mode, parallel mode and stepless speed change mode by controlling the combination state of the first clutch and the second clutch, so that different power requirements are met, the energy consumption of the power system is reduced, and the cruising range of the vehicle is improved.

[0017] Additional aspects and advantages of the present utility model will be partially given in the following description, some will become apparent from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the structure schematic diagram of power system according to the embodiment of the present utility model;

[0019] Figure 2 is the schematic diagram of power transmission path when the first motor drives in the pure electric mode of power system according to the embodiment of the present utility model;

[0020] Figure 3 is the schematic diagram of power transmission path when the second motor drives in the pure electric mode of power system according to the embodiment of the present utility model;

[0021] Figure 4 is the schematic diagram of power transmission path when double motor drives in the pure electric mode of power system according to the embodiment of the present utility model;

[0022] Figure 5 is the schematic diagram of power transmission path when the engine and double motor parallel drive in the parallel mode of power system according to the embodiment of the present utility model;

[0023] Figure 6 is the schematic diagram of power transmission path when the engine and the second motor parallel drive in the parallel mode of power system according to the embodiment of the present utility model;

[0024] Figure 7 is the schematic diagram of power transmission path when the engine and the first motor parallel drive in the parallel mode of power system according to the embodiment of the present utility model;

[0025] Figure 8 is the schematic diagram of power transmission path when the first motor regulates speed in the stepless speed change mode of power system according to the embodiment of the present utility model;

[0026] Figure 9 is the schematic diagram of power transmission path when the second motor regulates speed in the stepless speed change mode of power system according to the embodiment of the present utility model;

[0027] Figure 10 is the schematic diagram of power transmission path when the second motor generates electricity and the first motor drives in the series mode of power system according to the embodiment of the present utility model;

[0028] Figure 11 is the schematic diagram of power transmission path when the first motor generates electricity and the second motor drives in the series mode of power system according to the embodiment of the present utility model.

[0029] Figure 12 is a schematic diagram of a power transmission path when the power system according to an embodiment of the present application is in a high gear driving mode of an engine direct drive mode;

[0030] Figure 13 is a schematic diagram of a power transmission path when the power system according to an embodiment of the present application is in a low gear driving mode of an engine direct drive mode.

[0031] Reference signs:

[0032] Transmission 1; first input shaft 11; first transmission gear 111; second transmission gear 112; first shift 113;

[0033] Second input shaft 12; third transmission gear 121; fourth transmission gear 122; second shift 123;

[0034] Output shaft 13; first output gear 131; second output gear 132;

[0035] First motor 2; second motor 3;

[0036] Planetary gear mechanism 4; sun gear 41; planet gear 42; planet carrier 43; ring gear 44;

[0037] Engine 5; first clutch 6; second clutch 7; first brake 8; second brake 9;

[0038] Power system 10. DETAILED DESCRIPTION

[0039] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0040] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0041] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on terms should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or can intercommunication;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation.For ordinary skilled person in the art, the above terms can be understood according to the specific meaning in the utility model.

[0042] The power system 10 and the vehicle according to the embodiments of the utility model are described in detail below with reference to the drawings.

[0043] Referring to Figure 1 As shown in the figure, the power system 10 comprises a transmission 1, a first motor 2, a second motor 3, a planetary gear mechanism 4, an engine 5, a first clutch 6 and a second clutch 7, the transmission 1 comprises a first input shaft 11, a second input shaft 12 and an output shaft 13, the first input shaft 11 and the second input shaft 12 are in driving connection with the output shaft 13, the first motor 2 is in driving connection with the first input shaft 11, the second motor 3 is in driving connection with the second input shaft 12, the planetary gear mechanism 4 comprises a sun gear 41, a planet gear 42, a planet carrier 43 and a ring gear 44, the planet gear 42 is in meshing with the sun gear 41 and the ring gear 44 respectively, the planet carrier 43 is connected with the rotating shaft of the planet gear 42, the engine 5 is in driving connection with the sun gear 41, the planet carrier 43 is in selectively driving connection with the first input shaft 11 through the first clutch 6, and the ring gear 44 is in selectively driving connection with the second input shaft 12 through the second clutch 7.

[0044] The power system 10 can be used for a hybrid electric vehicle, the output shaft 13 of the transmission 1 can drive the wheels of the vehicle to rotate, the power output by the first motor 2 can be transmitted to the output shaft 13 through the first input shaft 11, the power output by the second motor 3 can be transmitted to the output shaft 13 through the second input shaft 12, the power output by the engine 5 can be transmitted to the output shaft 13 in sequence through the planetary gear mechanism 4, the first clutch 6 and the first input shaft 11, and the power output by the engine 5 can also be transmitted to the output shaft 13 in sequence through the planetary gear mechanism 4, the second clutch 7 and the second input shaft 12, by controlling the combination state of the first clutch 6 and the second clutch 7, the power system 10 can realize multiple different driving modes to meet different power requirements and reduce the energy consumption of the power system 10, and the multiple driving modes can be classified into pure electric mode, parallel mode, eCVT (electronic continuously variable transmission) and the like.

[0045] In the pure electric mode, referring to Figures 2-4As shown, the engine 5 is not working, the power source can be the first motor 2 and / or the second motor 3, the first clutch 6 and the second clutch 7 are both in the disengaged state, that is, the planet carrier 43 is disconnected from the first input shaft 11, and the ring gear 44 is disconnected from the second input shaft 12, to avoid interference of the power of the engine 5, the first motor 2 and the second motor 3, and the pure electric mode includes: single motor drive and double motor drive.

[0046] When the single motor drive of the pure electric mode, the power source is the first motor 2 or the second motor 3, referring to Figure 2 As shown, when the power source is the first motor 2, the first motor 2 works and the second motor 3 does not work, the power A1 output by the first motor 2 can be transmitted to the output shaft 13 through the first input shaft 11, so as to drive the vehicle to run through the output shaft 13. Referring to Figure 3 As shown, when the power source is the second motor 3, the first motor 2 does not work and the second motor 3 works, the power B1 output by the second motor 3 can be transmitted to the output shaft 13 through the second input shaft 12, so as to drive the vehicle to run through the output shaft 13. The urban working condition of single motor drive has good economy, which can reduce power consumption and improve the cruising range of the vehicle.

[0047] When the double motor drive of the pure electric mode, the power source is the first motor 2 and the second motor 3, the first motor 2 and the second motor 3 can simultaneously output power and output from the output shaft 13 after coupling through the transmission 1, referring to Figure 4 As shown, the first motor 2 and the second motor 3 work, the power A1 output by the first motor 2 can be transmitted to the output shaft 13 through the first input shaft 11, and the power B1 output by the second motor 3 can be transmitted to the output shaft 13 through the second input shaft 12, so that the power of the first motor 2 and the second motor 3 acts on the output shaft 13 together, to improve the power performance of the output shaft 13 driving the vehicle to run.

[0048] In parallel mode, referring to Figures 5-7 As shown, the engine 5 works, the power source can be the engine 5 and the first motor 2 and / or the second motor 3, and the parallel mode includes: engine 5 and double motor parallel drive.

[0049] When the engine 5 and double motor parallel drive of the parallel mode, referring to Figure 5As shown, the first clutch 6 is engaged, the second clutch 7 is engaged, the power source is the engine 5, the first motor 2 and the second motor 3, the power of the engine 5 and the first motor 2 can be coupled at the first input shaft 11, the power of the engine 5 and the second motor 3 can be coupled at the second input shaft 12, that is, the power C1 output by the engine 5 is transmitted to the sun gear 41, and then transmitted to the planet gear 42 and the ring gear 44 through the sun gear 41, the planet gear 42 transmits the power C11 to the output shaft 13 through the carrier 43, the first clutch 6, the first input shaft 11 and the output shaft 13 in turn, and the ring gear 44 transmits the power C12 to the output shaft 13 through the second clutch 7, the second input shaft 12 and the output shaft 13 in turn, at the same time, the first motor 2 and the second motor 3 are working, the power A1 output by the first motor 2 can be transmitted to the output shaft 13 through the first input shaft 11, and the power B1 output by the second motor 3 can be transmitted to the output shaft 13 through the second input shaft 12, so that the power of the engine 5, the first motor 2 and the second motor 3 acts on the output shaft 13 together to improve the power of the output shaft 13 driving the vehicle to run, and realize high power output of the power system 10.

[0050] In the eCVT mode, referring to Figure 8 and Figure 9 As shown, the engine 5 is working, the first clutch 6 is engaged, the second clutch 7 is engaged, the power source can be the engine 5, one of the first motor 2 and the second motor 3 is used to adjust the rotating speed of the output end of the planetary gear mechanism 4 to reduce the change of the rotating speed of the engine 5, so that the engine 5 works in a lower fuel consumption rotating speed interval, and the other of the first motor 2 and the second motor 3 can work or not work according to the power demand, and the eCVT mode includes: the first motor 2 speed regulation and the second motor 3 speed regulation.

[0051] In the eCVT mode, referring to Figure 8 As shown, the power source is the engine 5, the first clutch 6 and the second clutch 7 are engaged, the ring gear 44 is the output end of the planetary gear mechanism 4, the power C1 output by the engine 5 is transmitted to the output shaft 13 through the sun gear 41, the planet gear 42, the ring gear 44, the second clutch 7 and the second input shaft 12 in turn, to drive the vehicle to run through the output shaft 13, at this time, the first motor 2 can adjust the rotating speed of the carrier 43 through the first clutch 6, so as to adjust the rotating speed of the ring gear 44 through the carrier 43 without changing the rotating speed of the engine 5, to realize eCVT. In addition, the second motor 3 can be selectively worked according to the power demand, when the power demand is large, the second motor 3 works, when the power demand is small, the second motor 3 does not work.

[0052] In the eCVT mode, referring to Figure 9As shown, the power source is an engine 5, the first clutch 6 and the second clutch 7 are combined, the planet carrier 43 is the output end of the planetary gear mechanism 4, and the power C1 output by the engine 5 is transmitted to the output shaft 13 through the sun gear 41, the planet gear 42, the planet carrier 43, the first clutch 6 and the first input shaft 11 in sequence to drive the vehicle to run through the output shaft 13, at this time, the second motor 3 can adjust the rotating speed of the ring gear 44 through the second clutch 7, so that the rotating speed of the planet carrier 43 is adjusted through the ring gear 44 under the condition that the rotating speed of the engine 5 is unchanged, and stepless speed change is realized. In addition, the first motor 2 can be selectively operated according to the power demand, and when the power demand is large, the first motor 2 is operated, and when the power demand is small, the first motor 2 is not operated.

[0053] According to the power system 10 in the embodiment of the utility model, by controlling the combined state of the first clutch 6 and the second clutch 7, the power system 10 can realize pure electric mode, parallel mode, stepless speed change mode (eCVT) and various different driving modes, so as to meet different power demands, reduce the energy consumption of the power system 10 and improve the cruising range of the vehicle.

[0054] In some embodiments of the utility model, referring to Figure 1 As shown, the power system 10 further comprises a first brake 8 which selectively locks with the planet carrier 43.

[0055] Specifically, the first brake 8 can be fixed on the housing of the power system 10, when the first brake 8 is unlocked with the planet carrier 43, the planet carrier 43 can rotate freely, when the first brake 8 is locked with the planet carrier 43, the planet carrier 43 is locked by the first brake 8 and cannot rotate, so that the power system 10 can realize more kinds of driving modes, and the various driving modes can be divided into: series mode and engine 5 direct drive mode, at the same time, it can also increase the selection of driving mode in parallel mode, and the parallel mode further comprises: engine 5 and second motor 3 parallel driving.

[0056] In series mode, referring to Figure 10 And Figure 11 As shown, one of the first motor 2 and the second motor 3 is a power source, and the other one is driven by the engine 5 to generate electricity, the engine 5 can work in the high efficiency interval to supplement the electric energy of the vehicle, can reduce the comprehensive energy consumption of the power system 10 under the city working condition (low speed, congestion, frequent start and stop) and improve the cruising range of the vehicle, and the series mode comprises: the second motor 3 generates electricity and the first motor 2 drives.

[0057] When the second motor 3 generates electricity and the first motor 2 drives in series mode, referring to Figure 10As shown in FIG. 8, the first brake 8 is locked with the planet carrier 43, the first clutch 6 is in the disengaged state, the second clutch 7 is in the engaged state, and the power C1 output by the engine 5 is sequentially transmitted to the second motor 3 through the sun gear 41, the planet gear 42, the ring gear 44, the second clutch 7 and the second input shaft 12, and the ring gear 44 has a high rotating speed, so that the second motor 3 can generate electricity at a high efficiency and a high speed, at this time, the planet carrier 43 does not rotate, and the power A1 output by the first motor 2 can be transmitted to the output shaft 13 through the first input shaft 11, so as to drive the vehicle to run through the output shaft 13.

[0058] As shown in FIG. 9, the power source is the engine 5, and the first motor 2 and the second motor 3 are not working, so that the engine 5 can work in the high efficiency area in the suburban working condition (high speed and smooth running), the power system 10 has good fuel economy, the first motor 2 and the second motor 3 do not consume much electricity at a high rotating speed, and thus the cruising range of the vehicle is improved. Figure 12 Figure 13 As shown in FIG. 8, the first brake 8 is locked with the planet carrier 43, the first clutch 6 is in the disengaged state, the second clutch 7 is in the engaged state, and the power C1 output by the engine 5 is sequentially transmitted to the second motor 3 through the sun gear 41, the planet gear 42, the ring gear 44, the second clutch 7 and the second input shaft 12, and the ring gear 44 has a high rotating speed, so that the second motor 3 can generate electricity at a high efficiency and a high speed, at this time, the planet carrier 43 does not rotate, and the power A1 output by the first motor 2 can be transmitted to the output shaft 13 through the first input shaft 11, so as to drive the vehicle to run through the output shaft 13.

[0059] As shown in FIG. 8, the first brake 8 is locked with the planet carrier 43, the first clutch 6 is in the disengaged state, the second clutch 7 is in the engaged state, and the power C1 output by the engine 5 is sequentially transmitted to the second motor 3 through the sun gear 41, the planet gear 42, the ring gear 44, the second clutch 7 and the second input shaft 12, and the ring gear 44 has a high rotating speed, so that the second motor 3 can generate electricity at a high efficiency and a high speed, at this time, the planet carrier 43 does not rotate, and the power A1 output by the first motor 2 can be transmitted to the output shaft 13 through the first input shaft 11, so as to drive the vehicle to run through the output shaft 13. Figure 12 As shown in FIG. 8, the first brake 8 is locked with the planet carrier 43, the first clutch 6 is in the disengaged state, the second clutch 7 is in the engaged state, and the power C1 output by the engine 5 is sequentially transmitted to the second motor 3 through the sun gear 41, the planet gear 42, the ring gear 44, the second clutch 7 and the second input shaft 12, and the ring gear 44 has a high rotating speed, so that the second motor 3 can generate electricity at a high efficiency and a high speed, at this time, the planet carrier 43 does not rotate, and the power A1 output by the first motor 2 can be transmitted to the output shaft 13 through the first input shaft 11, so as to drive the vehicle to run through the output shaft 13.

[0060] Figure 6 As shown in FIG. 8, the first brake 8 is locked with the planet carrier 43, the first clutch 6 is in the disengaged state, the second clutch 7 is in the engaged state, and the power C1 output by the engine 5 is sequentially transmitted to the second motor 3 through the sun gear 41, the planet gear 42, the ring gear 44, the second clutch 7 and the second input shaft 12, and the ring gear 44 has a high rotating speed, so that the second motor 3 can generate electricity at a high efficiency and a high speed, at this time, the planet carrier 43 does not rotate, and the power A1 output by the first motor 2 can be transmitted to the output shaft 13 through the first input shaft 11, so as to drive the vehicle to run through the output shaft 13.

[0061] As shown in FIG. 8, the first brake 8 is locked with the planet carrier 43, the first clutch 6 is in the disengaged state, the second clutch 7 is in the engaged state, and the power C1 output by the engine 5 is sequentially transmitted to the second motor 3 through the sun gear 41, the planet gear 42, the ring gear 44, the second clutch 7 and the second input shaft 12, and the ring gear 44 has a high rotating speed, so that the second motor 3 can generate electricity at a high efficiency and a high speed, at this time, the planet carrier 43 does not rotate, and the power A1 output by the first motor 2 can be transmitted to the output shaft 13 through the first input shaft 11, so as to drive the vehicle to run through the output shaft 13. Figure 1 ​​​

[0062] Specifically, the second brake 9 can be fixed to the housing of the power system 10. When the second brake 9 is released from its locking engagement with the gear ring 44, the gear ring 44 can rotate freely. When the second brake 9 is locked into its locking engagement with the gear ring 44, the gear ring 44 is locked by the second brake 9 and cannot rotate, thus increasing the selection of drive mode in parallel mode, series mode, and direct drive mode of engine 5. The parallel mode also includes: engine 5 and first motor 2 driving in parallel; the series mode also includes: first motor 2 generating electricity and second motor 3 driving; and the direct drive mode of engine 5 includes: low-gear drive.

[0063] When the engine 5 and the first motor 2 are driven in parallel in parallel mode, refer to Figure 7 As shown, the power source is engine 5 and first motor 2. First clutch 6 is engaged, second clutch 7 is disengaged, and second brake 9 is locked to ring gear 44. The power of engine 5 and first motor 2 can be coupled at first input shaft 11. That is, the power C1 output by engine 5 is transmitted to sun gear 41. Sun gear 41 transmits power sequentially to output shaft 13 through planetary gear 42, planet carrier 43, first clutch 6, and first input shaft 11. At the same time, ring gear 44 does not rotate, first motor 2 works, and power A1 output by first motor 2 can be transmitted to output shaft 13 through first input shaft 11, so that the power of engine 5 and first motor 2 works together on output shaft 13 to improve the power of output shaft 13 in driving the vehicle.

[0064] When the first motor 2 generates electricity and the second motor 3 drives it in series mode, refer to Figure 11 As shown, the second brake 9 is locked in place with the gear ring 44, the first clutch 6 is engaged, and the second clutch 7 is disengaged. The power C1 output by the engine 5 is transmitted to the first motor 2 in sequence through the sun gear 41, planet gear 42, planet carrier 43, first clutch 6, and first input shaft 11, so that the first motor 2 generates electricity. At this time, the gear ring 44 does not rotate. The power B1 output by the second motor 3 can be transmitted to the output shaft 13 through the second input shaft 12, so as to drive the vehicle through the output shaft 13.

[0065] When the engine is in direct drive mode in low gear, refer to Figure 13 As shown, the second brake 9 is locked to the ring gear 44, the first clutch 6 is engaged, and the second clutch 7 is disengaged. The power C1 output by the engine 5 is transmitted to the output shaft 13 after passing through the sun gear 41, planet gear 42, planet carrier 43, first clutch 6, and first input shaft 11. At this time, the ring gear 44 does not rotate, so that the planetary gear mechanism 4 has a large reduction ratio and good power performance at low vehicle speeds.

[0066] In some embodiments of the utility model, power system 10 still includes controller, first clutch 6, second clutch 7, first brake 8 and second brake 9 all are connected with controller communication, controller can be ECU, controller can adjust the combination state of first clutch 6 and second clutch 7, adjust the locking state of first brake 8 and second brake 9 according to the working condition, electric quantity, oil quantity and power demand of vehicle, to make power system 10 satisfy the power demand of driver, and reduce the energy consumption of power system 10.

[0067] Need to explain, first clutch 6 can include: first clutch execution element and first hydraulic system, controller is connected with the first hydraulic system of first clutch 6 communication, controller drives the combination and separation of first clutch execution element by controlling the oil pressure of first hydraulic system, when first clutch execution element combines, planetary carrier 43 is transmission connected with first input shaft 11, when first clutch execution element separates, planetary carrier 43 is disconnected transmission connection with first input shaft 11.

[0068] Second clutch 7 can include: second clutch execution element and second hydraulic system, controller is connected with the second hydraulic system of second clutch 7 communication, controller drives the combination and separation of second clutch execution element by controlling the oil pressure of second hydraulic system, when second clutch execution element combines, gear ring 44 is transmission connected with second input shaft 12, when second clutch execution element separates, gear ring 44 is disconnected transmission connection with second input shaft 12.

[0069] First brake 8 can include: first locking piece and first driving piece, first locking piece can be friction plate or locking hook, first driving piece can be electric cylinder or motor, controller is connected with the first driving piece of first brake 8 communication, controller drives the locking and unblocking of first locking piece by controlling the action of first driving piece, when first locking piece locks, planetary carrier 43 is locked by first locking piece, when first locking piece unblocks, planetary carrier 43 can rotate freely.

[0070] Second brake 9 can include: second locking piece and second driving piece, second locking piece can be friction plate or locking hook, second driving piece can be electric cylinder or motor, controller is connected with the second driving piece of second brake 9 communication, controller drives the locking and unblocking of second locking piece by controlling the action of second driving piece, when second locking piece locks, gear ring 44 is locked by second locking piece, when second locking piece unblocks, gear ring 44 can rotate freely.

[0071] For example, when the electric quantity of vehicle battery is higher, and the vehicle is in the working condition of urban road, the controller can control the driving mode of power system 10 to be pure electric mode (such as Figures 2-4As shown in FIG. 1 and FIG. 2, the controller can control the driving mode of the power system 10 to be parallel driving (as shown in FIG. 1 and FIG. 2), and according to the power demand, select one of the three driving modes of engine 5 and first motor 2 parallel driving, engine 5 and second motor 3 parallel driving, and engine 5 and double motor parallel driving.

[0072] When the vehicle battery has a high power demand, the controller can control the driving mode of the power system 10 to be parallel driving (as shown in FIG. 1 and FIG. 2), and according to the power demand, select one of the three driving modes of engine 5 and first motor 2 parallel driving, engine 5 and second motor 3 parallel driving, and engine 5 and double motor parallel driving. Figures 5-7

[0073] When the vehicle battery has a low power demand or needs to maintain the power, the controller can control the driving mode of the power system 10 to be continuously variable mode (as shown in FIG. 1 and FIG. 2), and according to the power demand, select first motor 2 speed regulation or second motor 3 speed regulation, through the continuously variable transmission 1 mode, the engine 5 of the whole vehicle can be maintained at a steady state, and the power can be guaranteed while reducing energy loss. Figure 8 Figure 9

[0074] When the vehicle needs to be charged or is in urban road working condition, the controller can control the driving mode of the power system 10 to be series mode (as shown in FIG. 1 and FIG. 2), and according to the power generation and power demand, select first motor 2 power generation, second motor 3 driving, or second motor 3 power generation, first motor 2 driving. When the whole vehicle power generation requirement is high and the power requirement is high, second motor 3 power generation and first motor 2 driving can be used, at this time the speed is low and the output speed of the gear ring 44 is high, which can realize high-speed power generation of the second motor 3 to quickly supplement the power. When the whole vehicle power generation requirement is low and the power demand is low, first motor 2 power generation and second motor 3 driving can be used, at this time the output speed of the planet carrier 43 is low, which can realize low-speed steady-state power generation of the first motor 2 to guarantee the power while meeting the power demand, and realize power supplement under weak power demand. Figure 10 Figure 11

[0075] When the vehicle needs to maintain the power and the fuel is sufficient, and the vehicle is in suburban working condition, the controller can control the driving mode of the power system 10 to be engine 5 direct drive mode (as shown in FIG. 1 and FIG. 2), and according to the power demand, select low gear driving or high gear driving to achieve better fuel economy. Figure 12 Figure 13

[0076] ​​​​​​​In some embodiments of the utility model, the rated power of the first motor 2 is different from the rated power of the second motor 3 to realize the economy and power of the power system 10. For example, the rated power of the first motor 2 is 20% to 80% greater than the rated power of the second motor 3, the high-power first motor 2 can be used when the power demand is high, and has good acceleration performance, and the low-power second motor 3 can be used when the power demand is low, and has good economy.

[0077] In some embodiments of the utility model, referring to Figure 1 As shown in the figure, the transmission 1 further comprises: a first transmission gear 111, a second transmission gear 112, a first gear shifter 113, a first output gear 131, a second output gear 132, the first transmission gear 111 is sleeved on the first input shaft 11, the second transmission gear 112 is sleeved on the first input shaft 11, the first gear shifter 113 is in transmission connection with the first input shaft 11, the first gear shifter 113 is selectively combined with the first transmission gear 111 and the second transmission gear 112, the first output gear 131 is fixedly arranged on the output shaft 13, and the first output gear 131 is in mesh with the first transmission gear 111, and the second output gear 132 is fixedly arranged on the output shaft 13, and the second output gear 132 is in mesh with the second transmission gear 112.

[0078] Specifically, when the first input shaft 11 transmits power to the output shaft 13, the power transmission path between the first input shaft 11 and the output shaft 13 can be adjusted through the first gear shifter 113. It can be understood that when the first gear shifter 113 is combined with the first transmission gear 111, the power transmission path of the first input shaft 11 to the output shaft 13 is: the first input shaft 11, the first gear shifter 113, the first transmission gear 111, the first output gear 131 and the output shaft 13. When the first gear shifter 113 is combined with the second transmission gear 112, the power transmission path of the first input shaft 11 to the output shaft 13 is: the first input shaft 11, the first gear shifter 113, the second transmission gear 112, the second output gear 132 and the output shaft 13, so that the first gear shifter 113 can realize the switching of the gear position of the transmission 1 to improve the driving experience and economy.

[0079] In some embodiments of the utility model, referring to Figure 1 As shown in the figure, the transmission 1 further comprises: a third transmission gear 121, a fourth transmission gear 122 and a second gear shifter 123, the third transmission gear 121 is sleeved on the second input shaft 12, the third transmission gear 121 is in mesh with the first output gear 131, the fourth transmission gear 122 is sleeved on the second input shaft 12, the fourth transmission gear 122 is in mesh with the second output gear 132, the second gear shifter 123 is in transmission connection with the second input shaft 12, and the second gear shifter 123 is selectively combined with the third transmission gear 121 and the fourth transmission gear 122.

[0080] Specifically, when the second input shaft 12 transmits power to the output shaft 13, the power transmission path between the second input shaft 12 and the output shaft 13 can be adjusted through the second shift 123. It can be understood that when the second shift 123 is combined with the third transmission gear 121, the power transmission path of the second input shaft 12 to the output shaft 13 is: the second input shaft 12, the second shift 123, the third transmission gear 121, the first output gear 131, and the output shaft 13. When the second shift 123 is combined with the fourth transmission gear 122, the power transmission path of the second input shaft 12 to the output shaft 13 is: the second input shaft 12, the second shift 123, the fourth transmission gear 122, the second output gear 132, and the output shaft 13. Thus, the second shift 123 can realize the switching of the gear positions of the transmission 1 to improve the driving experience and economy.

[0081] In some embodiments of the present application, the transmission ratio of the first transmission gear 111 to the first output gear 131 is i1, the transmission ratio of the second transmission gear 112 to the second output gear 132 is i2, the transmission ratio of the third transmission gear 121 to the first output gear 131 is i3, and the transmission ratio of the fourth transmission gear 122 to the second output gear 132 is i4, which satisfies the relationship: i1≠i2≠i3≠i4.

[0082] Specifically, when i1≠i2≠i3≠i4, each gear position of the transmission 1 has a different transmission ratio, and the transmission 1 can flexibly adjust the transmission ratio according to the vehicle speed and load, so that the engine 5, the first motor 2 and the second motor 3 can operate in the high-efficiency interval as much as possible. At the same time, the setting of multiple gear positions can also reduce power interruption and speed fluctuation during gear shifting, optimize power transmission efficiency, and improve the smoothness of the power system 10. Alternatively, i1>i2, i3>i4.

[0083] It should be noted that, as shown in Figures 2-13 , the transmission 1 has at least two switchable gear positions under each power driving, for example:

[0084] As shown in Figure 2 , when the first motor 2 drives in the pure electric mode, if the first shift 113 is combined with the first transmission gear 111, the transmission 1 can realize a high-torque gear position output state. If the first shift 113 is combined with the second transmission gear 112, the transmission 1 can realize a high-speed gear position output state.

[0085] As shown in Figure 3 , when the second motor 3 drives in the pure electric mode, if the second shift 123 is combined with the third transmission gear 121, the transmission 1 can realize a high-torque gear position output state. If the second shift 123 is combined with the fourth transmission gear 122, the transmission 1 can realize a high-speed gear position output state.

[0086] Referring to Figure 4 As shown in FIG. 1, when the dual-motor drive in the pure electric mode, if the first shift lever 113 is combined with the first transmission gear 111, and the second shift lever 123 is combined with the third transmission gear 121, the transmission 1 can be in a high-torque gear output state. If the first shift lever 113 is combined with the second transmission gear 112, and the second shift lever 123 is combined with the fourth transmission gear 122, the transmission 1 can be in a high-speed gear output state.

[0087] Figures 5-13 Corresponding embodiments, it should be noted that, referring to Figure 12 and Figure 13 As shown in FIG. 1, the low gear and the low gear drive in the engine 5 direct drive mode both have at least two switchable gears, that is, the engine 5 direct drive mode can realize the switching of at least four gears, so that the engine 5 can work in the high-efficiency zone, and the fuel consumption of the engine 5 is reduced.

[0088] In some embodiments of the utility model, referring to Figure 1 As shown in FIG. 1, the first input shaft 11 and the second input shaft 12 are symmetrical relative to the axis of the output shaft 13, so that the mass distribution of the transmission 1 is uniform, the center of mass of the transmission 1 can be located on the central axis of the transmission 1, the vibration and noise of the transmission 1 are reduced, and the stability and reliability of the operation of the transmission 1 are improved.

[0089] According to the power system 10 of the utility model embodiment, through the mutual cooperation of the first clutch 6, the second clutch 7, the first brake 8 and the second brake 9, the power system 10 can meet various power requirements, improve power acceleration while ensuring sufficient use of power, and the engine 5, the first motor 2 and the second motor 3 can be selectively coupled, so as to realize the optimal solution of power and the optimal solution of power generation.

[0090] In the engine 5 direct drive mode, the transmission 1 has multi-gear control, which can improve the engine 5 direct drive efficiency and reduce the engine 5 fuel consumption. Different matching schemes of the engine 5, the first motor 2 and the second motor 3 can realize various power couplings, improve power usage frequency, improve energy utilization rate, reduce fuel consumption and power consumption. In addition, it can also meet the change of power generation demand of different motors, and meet the power generation demand through the optimal power generation efficiency.

[0091] According to another aspect of the utility model embodiment, the vehicle comprises the power system 10 of the above embodiment.

[0092] According to the vehicle of the embodiment of the utility model, the power system 10 can realize pure electric mode, parallel mode, stepless speed change mode and various different drive modes by controlling the combination state of the first clutch 6 and the second clutch 7, so that different power requirements are met, the energy consumption of the power system 10 is reduced, and the cruising range of the vehicle is improved.

[0093] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification.

[0094] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and those skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. A power system, characterized by, The power system comprises: a transmission (1), the transmission (1) comprising a first input shaft (11), a second input shaft (12) and an output shaft (13), the first input shaft (11) and the second input shaft (12) being in driving connection with the output shaft (13); a first motor (2), the first motor (2) being in driving connection with the first input shaft (11); a second motor (3), the second motor (3) being in driving connection with the second input shaft (12); a planetary gear mechanism (4), the planetary gear mechanism (4) comprising a sun gear (41), a planet gear (42), a planet carrier (43) and a ring gear (44), the planet gear (42) being in meshing engagement with the sun gear (41) and the ring gear (44) respectively, the planet carrier (43) being connected with the rotation shaft of the planet gear (42); an engine (5), the engine (5) being in driving connection with the sun gear (41); a first clutch (6), the planet carrier (43) being in selective driving connection with the first input shaft (11) through the first clutch (6); a second clutch (7), the ring gear (44) being in selective driving connection with the second input shaft (12) through the second clutch (7).

2. The power system of claim 1, wherein, The power system further comprises a first brake (8), the first brake (8) being in selective locking cooperation with the planet carrier (43).

3. The power system of claim 2, wherein, The power system further comprises a second brake (9), the second brake (9) being in selective locking cooperation with the ring gear (44).

4. The power system of claim 3, wherein, The power system further comprises a controller, the first clutch (6), the second clutch (7), the first brake (8) and the second brake (9) being in communication connection with the controller.

5. The power system of claim 1, wherein, The rated power of the first motor (2) is different from the rated power of the second motor (3).

6. The power system of any one of claims 1-5, wherein, The transmission (1) further comprises: a first transmission gear (111), the first transmission gear (111) being sleeved on the first input shaft (11); a second transmission gear (112), the second transmission gear (112) being sleeved on the first input shaft (11); a first shift (113), the first shift (113) being in driving connection with the first input shaft (11), the first shift (113) being in selective combination with the first transmission gear (111) and the second transmission gear (112); a first output gear (131), the first output gear (131) being fixedly arranged on the output shaft (13), the first output gear (131) being in meshing engagement with the first transmission gear (111); a second output gear (132), the second output gear (132) being fixedly arranged on the output shaft (13), the second output gear (132) being in meshing engagement with the second transmission gear (112).

7. The power system of claim 6, wherein, The transmission (1) further comprises: a third transmission gear (121), the third transmission gear (121) being sleeved on the second input shaft (12), the third transmission gear (121) being in meshing engagement with the first output gear (131); A fourth transmission gear (122) is sleeved on the second input shaft (12), and the fourth transmission gear (122) is engaged with the second output gear (132); A second shift lever (123) is in transmission connection with the second input shaft (12), and the second shift lever (123) is selectively combined with the third transmission gear (121) and the fourth transmission gear (122).

8. The power system of claim 7, wherein, The transmission ratio of the first transmission gear (111) to the first output gear (131) is i1, the transmission ratio of the second transmission gear (112) to the second output gear (132) is i2, the transmission ratio of the third transmission gear (121) to the first output gear (131) is i3, and the transmission ratio of the fourth transmission gear (122) to the second output gear (132) is i4, and the relationship i1≠i2≠i3≠i4 is satisfied.

9. The power system of claim 7, wherein, The first input shaft (11) and the second input shaft (12) are axisymmetric relative to the output shaft (13).

10. A vehicle characterized by comprising: The power system according to any one of claims 1-9. The power system according to any one of claims 1-9.

Images