Planetary gear set transmission device for hybrid vehicles

Abstract

A planetary gear set transmission device of a hybrid vehicle, the planetary gear set transmission device comprising an input shaft (11), an output shaft (14), a front-end motor (18), a rear-end motor (17), a first clutch (15), and a second clutch (16), one end of the input shaft (11) being connected to an engine power system and the other end of the input shaft (11) being connected to the front-end motor (18) via a front-end planetary gear set; the second clutch (16) being mounted between the other end of the input shaft (11) and the output shaft (14); the first clutch (15) being mounted between the front-end planetary gear set and the output shaft (14); the rear-end motor (17) being connected to the output shaft (14) via a rear-end planetary gear set;and wherein a selection of different gear ratios and different operating modes can be achieved by means of different combinations of the first clutch (15) and the second clutch (16) and different operating states of the prime mover, the motor (17) at the rear end, and the motor (18) at the front end, characterized in that the planetary gear set at the front end comprises a first sun gear (21), a first planet gear (22), a second sun gear (31), a second planet gear (32), a second ring gear (34), and a second planet carrier (33); wherein the planetary gear set at the rear end comprises a third sun gear (41), a third planet gear (42), a third ring gear (44), and a third planet carrier (43); wherein the second ring gear (34) is fixedly confined in the planetary gear set at the front end; wherein the first planet gear (22) is rigidly connected to the second planet gear (32);wherein the second sun gear (31) and the second planet carrier (33) form a gear ratio relationship; wherein the first sun gear (21) and the second planet carrier (33) form a gear ratio relationship; wherein the first sun gear (21) and the second sun gear (31) form a gear ratio relationship; wherein ; the other end of the input shaft (11) is connected to the second sun gear (31) and to one end of the inner hub of the second clutch (12); the other end of the inner hub of the second clutch (12) is connected to the second clutch (16); one end of the second planetary carrier (33) is connected to one end of the first clutch (15); the first clutch (15) and the second clutch (16) are connected together to one end of a clutch basket (13), and the other end of the clutch basket (13) and one end of the third planetary carrier (43) are connected together to the output shaft (14); the motor (17) is connected at the rear end to the third sun gear (41) and the third ring gear (44) is fixedly attached to a housing (19); the motor (18) is connected at the front end to the first sun gear (21); the second planetary gear (32) and the first planetary gear (22) are attached to the second planetary carrier (33); and the second ring gear (34) is fixedly attached to the housing (19).

Description

TECHNICAL FIELDThe present disclosure relates to the technical field of transmissions, and more particularly, to a planetary gearset transmission device of a hybrid vehicle.PRIOR ARTWith the rapid development and technological innovation of the automotive industry, hybrid propulsion assemblies with new energies are always widely used in the field of transmissions, so that various power combination forms of an engine, a power generator and a motor can be fulfilled and the respective advantages of the engine and the motor can be fully realized. The hybrid drive assemblies with new energies can meet the demand for continuous running performance and have low demands on infrastructures such as a conventional fuel vehicle. The hybrid drive assemblies with new energies can meet the economic requirement like a pure electric vehicle. This is an important development direction for vehicles with new energies in the next years. A planetary gearset can translate large ratio changes and can achieve different power combination modes in cooperation with a clutch having fewer parts. The spatial structure has a small size and a relatively low weight, which is an important implementation form of a transmission device of a hybrid vehicle.However, the present hybrid power plant has problems of a complex structure, a large number of parts, a high parts cost, and a high machining difficulty.DE 10 2012 024 174 A1 discloses a hybrid drive arrangement for a motor vehicle, comprising - a first and a second electric machine, each of which has a rotor and a stator which is fixedly connected to a transmission housing and can be operated both in motor operation and in generator operation and can be connected to one another and can be connected to an electrical energy store via power electronics,DE 10 2020 101 830 A1 discloses a drive train and an electromechanical drive unit which includes a first electric machine and a second electric machine, each of which can be operated as a motor for generating an engine torque or as a generator for generating energy.DE 10 2019,105 004 B3 discloses a drive train and an electromechanical drive unit which includes a first electric machine and a second electric machine, each of which can be operated as a motor for generating an engine torque or as a generator for generating energy.SUMMARYThe present disclosure is intended to overcome the disadvantages in the related art and provide a transmission device of a hybrid vehicle based on a planetary gear set having a simple structure and being convenient to maintain. The technical solution for solving the technical problem adopted by the present disclosure is as follows: A planetary gear set transmission device of a hybrid vehicle includes an input shaft, an output shaft, a front end motor, a rear end motor, a first clutch, and a second clutch. One end of the input shaft is connected to an engine power system and the other end of the input shaft is connected to the motor at the front end via a planetary gear set at the front end. The second clutch is mounted between the other end of the input shaft and the output shaft. The first clutch is mounted between the front end planetary gear set and the output shaft. The rear end motor is connected to the output shaft through a rear end planetary gear set. By means of different combinations of the first clutch and the second clutch and different operating states of the engine, the rear end motor and the front end motor, a selection of different gear ratios and different operating modes can be achieved.The front end planetary gear set includes a first sun gear, a first planetary gear, a second sun gear, a second planetary gear, an outer tooth ring [], and a second planetary carrier [planetary frame] ; the rear end planetary gear set includes a third sun gear, a third planetary gear, a third ring gear, and a third planetary carrier. In the planetary gear set at the front end, the second ring gear is fixedly restricted. The first planetary gear is rigidly connected to the second planetary gear. The second sun gear and the second planet carrier form a transmission ratio relationship. The first sun gear and the second planet carrier form a transmission ratio relationship. The first sun gear and the second sun gear form a gear ratio relationship.The other end of the input shaft is connected to the second sun gear and to one end of an inner hub of the second clutch. The other end of the inner hub of the second clutch is connected to the second clutch. One end of the second planet carrier is connected to one end of the first clutch. The first clutch and the second clutch are connected together with one end of a clutch basket [clutch frame], and the other end of the clutch basket and one end of the third planetary carrier are connected together with the output shaft.The rear end motor is connected to the third sun gear, and the third ring gear is fixedly mounted on a housing.The motor at the front end is connected to the first sun gear. The second planetary gear and the first planetary gear are mounted on the second planetary carrier. The second ring gear is fixedly mounted to the housing.Further, when the transmission device is in an Electric Vehicle (EV) mode, the first clutch and the second clutch are both disengaged, the engine and the front end motor do not operate, and the rear end motor alone outputs power serving as a power source of the transmission device.Further, when the transmission device is in the series II mode, the first clutch and the second clutch are disengaged, the engine outputs power, and the front end motor receives the power output from the engine and transmits the received power to the rear end motor or stores the power energy in a battery. The rear end motor outputs power. The power source of the rear-end motor is the front-end motor or the battery.Further, when the transmission device is in direct drive I mode III, the first clutch is engaged, the second clutch is disengaged, and the rear end engine is not operating. If the battery has sufficient electricity, the motor at the front end does not receive the power. When the battery needs to be charged, the motor at the front end receives a part of the power output by the engine and the engine outputs power that is a power output of the transmission device.Further, when the transmission device is in direct drive II IV mode, the first clutch is disengaged, the second clutch is engaged, and the rear end engine is not operating. If the battery has sufficient electricity, the motor at the front end does not receive the power. When the battery needs to be charged, the motor at the front end receives a part of the power output of the engine and the engine outputs power that is a power output of the transmission device.Further, when the transmission device is in the V-parallel I mode, the first clutch is engaged and the second clutch is disengaged. If the battery has sufficient electricity, the motor at the front end does not operate. When the battery needs to be charged, the front end motor receives a part of the power output by the engine, and the engine and the rear end motor output power that is a power output of the transmission device.Further, when the transmission device is in the VI - parallel shift II - mode, the first clutch is disengaged and the second clutch is engaged. If the battery has sufficient electricity, the motor at the front end does not operate. When the battery needs to be charged, the front end motor receives a part of the power output by the engine, and the engine and the rear end motor output power that is a power output of the transmission device.Further, when the transmission device is in the regenerative braking mode VII, the first clutch and the second clutch are both disengaged. The rear-end motor receives power generated by deceleration braking of a wheel system.Further, when the transmission device is in the VIII mode - idle power generation - the first clutch and the second clutch are both disengaged. The rear end motor is not operating and the front end motor receives the power output by the engine and stores the received power energy in the battery.The present disclosure has the following advantageous effects: 1. various power combination forms of an engine, a power generator, and a motor can be satisfied, and the respective advantages of the engine and the motor can be fully realized. As with a conventional fuel vehicle, the transmission device may meet the demand for continuous running performance and have low demands for infrastructures. As in a pure electric vehicle, the transmission device can meet the economic requirement. 2. because of the two clutches and the compound planetary gearset, the planetary gearset transmission device of the hybrid vehicle of the present disclosure has two engine direct gears. The two engine direct gears have advantages of: The anxiety of a motor vehicle owner that a battery mounted in the vehicle is not charged in time, a motor system failure, and the like is reduced. The transmission device has an engine direct drive mode so that the engine can operate in an optimum efficiency range regardless of whether the vehicle speed is high or low. When the entire vehicle is at a lower speed, the transmission gear ratio is high and a low speed gear meets the dynamic property requirement. When the entire vehicle is at a high speed, the transmission gear ratio is small and a high speed gear meets the economic requirement. 3. a planetary gearset can implement large ratio changes and can achieve different power combination modes with fewer parts in cooperation with the clutch. The spatial structure is small in size and relatively light in weight. The planetary gear set at the front end is a compound planetary gear set having an extremely simple structure and including only two sun gears, a planetary gear assembly, a ring gear and a planetary carrier, so that it is easy to implement as a whole and has low cost. 4. the present disclosure is convenient to control, has a compact structure, and takes few parts. The clutches and planetary gear sets are easily assembled, and the parts cost and the machining difficulty are low. The transmission device has characteristics of a reasonable structure, ease of assembly, capability of achieving multiple operation modes, and high cost performance.BRIEF DESCRIPTION OF THE DRAWINGSFIG. 1 is a lever diagram of mode 1-EV; FIG. 2 is a schematic structural diagram of the mode 1-EV; FIG. 3 is a lever diagram of the mode 2 series connection; FIG. 4 is a schematic structural diagram of the mode 2 series connection; FIG. 5 is a lever diagram of mode 3 - direct drive 1; FIG. 6 is a schematic structural diagram of mode 3 direct drive 1; FIG. 7 is a lever diagram of mode 4 - direct drive 2; FIG. 8 is a schematic structural diagram of mode 4 - direct drive 2; FIG. 9 is a lever diagram of mode 5 - parallel circuit 1; FIG. 10 is a schematic structural diagram of the mode 5 parallel circuit 1; FIG. 11 is a lever diagram of mode 6 - parallel circuit 2; FIG. 12 is a schematic structural diagram of the mode 6 parallel circuit 2; FIG. 13 is a lever diagram of mode 7 - brake regeneration; FIG. 14 is a schematic structural diagram of the mode 7 brake regeneration; FIG. 15 is a lever diagram of mode 8 - idle power generation; and FIG. 16 is a schematic structural diagram of the mode 8 idle power generation.11: Input shaft; 12: Inner hub of second clutch; 13: Clutch cage; 14: Output shaft; 15: First clutch; 16: Second clutch; 17: Motor at rear end; 18: Motor at front end; 19: Housing; 21: First sun gear; 22: First planetary gear; 31: Second sun gear; 32: Second planetary gear; 33: Second planetary carrier; 34: Second ring gear; 41: Third sun gear; 42: Third planetary gear; 43: Third planetary carrier; 44: Third ring gear.DETAILED DESCRIPTION OF THE EMBODIMENTSIn order to better understand the objects, structures, and functions of the present disclosure, the present disclosure will be described in further detail below together with the accompanying drawings.A planetary gear set transmission device of a hybrid vehicle includes an input shaft 11, a second clutch inner hub 12, a clutch basket 13, an output shaft 14, a first clutch 15, a second clutch 16, a rear-end motor 17, a front-end motor 18, a front-end planetary gear set, and a rear-end planetary gear set. The front end planetary gear set includes a first sun gear 21, a first planetary gear 22, a second sun gear 31, a second planetary gear 32, a second ring gear 34, and a second planetary carrier 33. The first planetary gear 22 is rigidly connected to the second planetary gear 32. The second sun gear 31 and the second planetary carrier 33 form a transmission ratio relationship. The first sun gear 21 and the second planetary carrier 33 form a transmission ratio relationship. The first sun gear 21 and the second sun gear 31 form a gear ratio relationship.The planetary gearset transmission device of the hybrid vehicle has three engines: the engine power system, the rear end motor 17, and the front end motor 18.One end of the inner shaft II is connected to the engine power system, and the other end of the input shaft 11 is connected to the motor 18 at the front end via the planetary gear set at the front end, and the second clutch 16 is mounted between the other end and the output shaft 14. The first clutch 15 is mounted between the front end planetary gear set and the output shaft 14. The rear-end motor 17 is connected to the output shaft 14 via the rear-end planetary gear set.More specifically:One end of the input shaft II is connected to the engine power system, and the other end of the input shaft 11 is connected to the second sun gear 31 and to one end of the inner hub of the second clutch 12. The other end of the inner hub of the second clutch 12 is connected to the second clutch 16. One end of the second planetary carrier 33 is connected to one end of the first clutch 15. The first clutch 15 and the second clutch 16 are connected together to one end of the clutch basket 13, and the other end of the clutch basket 13 and one end of the third planetary carrier 43 are connected together to the output shaft 14.The rear-end motor 17 is connected to the third sun gear 41. The third planetary gear 42 is simultaneously in gear engagement with the third sun gear 41 and the third ring gear 44. The third planetary gear 42 is mounted on the third planetary carrier 43. The third ring gear 44 is fixedly mounted on the housing 19.The motor 18 at the front end is connected to the first sun gear 21. The first sun gear 21 is in gear mesh with the first planetary gear 22. The second planetary gear 32 is in gear mesh with the second sun gear 31 and the second ring gear 34 simultaneously. The second planetary gear 32 and the first planetary gear 22 are mounted on the second planetary carrier 33. The second ring gear 34 is fixedly mounted on the housing 19.The selection of the various gear ratios and the various operating modes may be achieved using various combinations of the first clutch 15 and the second clutch 16 in different operating states of the engine, the rear end motor 17, and the front end motor 18.Mode I - EV: The first clutch 15 and the second clutch 16 are both disengaged, the engine and the front-end motor 18 do not operate, and the rear-end motor 17 alone outputs power serving as a power source of the transmission device. The power transmission path is as follows: The rear end motor 17 transmits the power to the third sun gear 41; the third sun gear 41 transmits the power to the third planetary carrier 43 via the rear end planetary gear set.Mode II - Series connection: The first clutch 15 and the second clutch 16 are both disengaged. The engine outputs power. The front end motor 18 receives the power output through the engine and transmits the received power to the rear end motor 17 or stores the power energy in a battery. The rear-end motor 17 outputs the power. A power source of the rear-end motor 17 is the front-end motor 18 or the battery. A power transmission path is as follows: The engine transmits the power to the second sun gear 31; The second sun gear 31 transmits the power to the first sun gear 21 via the planetary gear set at the front end. The first sun gear 21 transmits the power to the motor 18 at the front end. The rear-end motor 17 transmits the power to the third sun gear 41 The third sun gear 41 transmits the power to the third planetary carrier 43 via the rear-end planetary gear set.Mode III - Direct Drive I: The first clutch 15 is engaged, the second clutch 16 is differently disengaged, and the rear end engine 17 is not operating. If the battery has sufficient electricity, the motor 18 does not receive power at the front end. When the battery needs to be charged, the front end motor 18 receives a portion of the power output by the engine. The engine outputs power that is a power output of the transmission device. A power transmission path is as follows: The engine transmits the power to the second sun gear 31; The second sun gear 31 transmits the power to the second planetary carrier 33 via the front end planetary gear set; The second planetary carrier 33 transmits the power to the first clutch 15, the clutch basket 13, and the output shaft 14 in order; When the battery needs to be charged, the second sun gear 31 transmits a part of the power to the first sun gear 21 via the front end planetary gear set; The first sun gear 21 transmits the power to the front end motor 18 and stores the received power energy in the battery.Mode IV - DIRECT DRIVE II: The first clutch 15 is disengaged, the second clutch 16 is engaged and the rear end engine 17 is not operating. If the battery has sufficient electricity, the motor 18 does not receive power at the front end. When the battery needs to be charged, the front end motor 18 receives a portion of the power output by the engine. The engine transmits power that is a power output of the transmission device. A power transmission path is as follows: The engine transmits the power to the second sun gear 31; The second sun gear 31 transmits the power to the second planetary carrier 33 via the front end planetary gear set; The second planetary carrier 33 transmits the power to the second clutch 16, the clutch basket 13, and the output shaft 14 in order; When the battery needs to be charged, the second sun gear 31 transmits a part of the power to the first sun gear 21 via the front end planetary gear set; The first sun gear 21 transmits the power to the front end motor 18 and stores the received power energy in the battery.Mode V - Parallel Circuit I: The first clutch 15 is engaged and the second clutch 16 is disengaged. If the battery has sufficient electricity, the motor 18 does not operate at the front end. When the battery needs to be charged, the front end motor 18 receives a portion of the power output by the engine. The engine and the rear-end motor 17 output power used as a power output of the transmission device. A power transmission path is as follows: The engine transmits the power to the second sun gear 31; The second sun gear 31 transmits the power to the second planetary carrier 33 via the planetary gear set at the front end; The second planetary carrier 33 transmits the power to the first clutch 15, the clutch basket 13, and the output shaft 14 in order; When the battery needs to be charged, the second sun gear 31 transmits a part of the power to the first sun gear 21 via the planetary gear set at the front end; The first sun gear 21 transmits the power to the motor 18 at the front end and stores the received power energy in the battery or transmits the power to the motor 17 at the rear end. The rear-end motor 17 transmits the power to the third sun gear 41; the third sun gear 41 transmits the power to the third planetary carrier 43 via the rear-end planetary gear set. the third planetary carrier 43 transmits the power to the output shaft 14. the output shaft 14 simultaneously receives the power outputs from the clutch basket 13 and the third planetary carrier 43.Mode VI - Parallel Shift II: The first clutch 15 is disengaged and the second clutch 16 is engaged. If the battery has sufficient battery, the motor 18 does not operate at the front end. When the battery needs to be charged, the front end motor 18 receives a portion of the power output by the engine. The engine and the rear-end motor 17 output power used as a power output of the transmission device. A power transmission path is as follows: The engine transmits the power to the second sun gear 31; The second sun gear 31 transmits the power to the second planetary carrier 33 via the planetary gear set at the front end; The second planetary carrier 33 transmits the power to the second clutch 16, the clutch basket 13, and the output shaft 14 in order; When the battery needs to be charged, the second sun gear 31 transmits a part of the power to the first sun gear 21 via the planetary gear set at the front end; The first sun gear 21 transmits the power to the motor 18 at the front end and stores the received power energy in the battery or transmits the power to the motor 17 at the rear end. The rear-end motor 17 transmits the power to the third sun gear 41; the third sun gear 41 transmits the power to the third planetary carrier 43 via the rear-end planetary gear set. the third planetary carrier 43 transmits the power to the output shaft 14. the output shaft 14 simultaneously receives the power outputs from the clutch basket 13 and the third planetary carrier 43.Mode VII - Brake Recovery: The first clutch 15 and the second clutch 16 are both disengaged. The rear-end motor 17 receives power generated by deceleration braking of a wheel system. A power transmission path is as follows: The output shaft 14 transmits the power to the third planetary carrier 43; The third planetary carrier 43 transmits the power to the third sun gear 41 via the rear-end planetary gear set; The third sun gear 41 transmits the power to the rear-end motor 17 and stores the received power energy in the battery.Mode VIII - Idle Power Generation: The first clutch 15 and the second clutch 16 are both disengaged and the rear-end engine 17 does not operate. The front end motor 18 receives the power output through the engine and stores the received power energy in the battery. A power transmission path is as follows: The engine transmits the power to the second sun gear 31; The second sun gear 31 transmits the power to the first sun gear 21 via the planetary gear set at the front end. The first sun gear 21 transmits the power to the motor 18 at the front end.It goes without saying that the present disclosure is described by some embodiments. It will be understood by those skilled in the art that various changes or equivalent substitutions may be made in these features and embodiments without departing from the spirit and scope of the present disclosure. In addition, these features and embodiments may be changed in the teachings of the present disclosure to adapt a particular situation and material without departing from the spirit and scope of the present disclosure. Thus, the present disclosure is not limited to the specific embodiments disclosed herein, and all embodiments that are within the scope of the claims of the present application are within the scope of the present disclosure

Claims

A planetary gear set transmission device of a hybrid vehicle, the planetary gear set transmission device comprising an input shaft (11), an output shaft (14), a front end motor (18), a rear end motor (17), a first clutch (15), and a second clutch (16), one end of the input shaft (11) being connected to an engine power system and the other end of the input shaft (11) being connected to the front end motor (18) via a front end planetary gear set; the second clutch (16) being mounted between the other end of the input shaft (11) and the output shaft (14); the first clutch (15) being mounted between the front end planetary gear set and the output shaft (14); the rear end motor (17) being connected to the output shaft (14) via a rear end planetary gear set; and wherein, by means of different combinations of the first clutch (15) and the second clutch (16) and different operating states of the engine, the motor (17) at the rear end and the motor (18) at the front end, a selection of different transmission ratios and different operating modes can be achieved, characterized in that the planetary gear set at the front end comprises a first sun wheel (21), a first planetary wheel (22), a second sun wheel (31), a second planetary wheel (32), a second ring wheel (34) and a second planetary carrier (33); wherein the planetary gear set at the rear end comprises a third sun wheel (41), a third planetary wheel (42), a third ring wheel (44) and a third planetary carrier (43); wherein the second ring wheel (34) is fixedly constrained in the planetary gear set at the front end; wherein the first planetary wheel (22) is rigidly connected to the second planetary wheel (32); wherein the second sun gear (31) and the second planet carrier (33) form a gear ratio relationship; wherein the first sun gear (21) and the second planet carrier (33) form a gear ratio relationship; wherein the first sun gear (21) and the second sun gear (31) form a gear ratio relationship; wherein the other end of the input shaft (11) is connected to the second sun gear (31) and to one end of the inner hub of the second clutch (12); the other end of the inner hub of the second clutch (12) is connected to the second clutch (16); one end of the second planet carrier (33) is connected to one end of the first clutch (15); the first clutch (15) and the second clutch (16) are connected together with one end of a clutch basket (13), and the other end of the clutch basket (13) and one end of the third planetary carrier (43) are connected together with the output shaft (14); the motor (17) is connected at the rear end to the third sun gear (41), and the third ring gear (44) is fixedly attached to a housing (19); the motor (18) is connected at the front end to the first sun gear (21); the second planetary gear (32) and the first planetary gear (22) are attached to the second planetary carrier (33); and the second ring gear (34) is fixedly attached to the housing (19).The planetary gear set transmission device of a hybrid vehicle according to claim 1, wherein when the transmission device is in the Electric Vehicle (EV) mode: the first clutch (15) and the second clutch (16) are both disengaged, the engine and the front-end motor (18) do not operate, and the rear-end motor (17) alone outputs power serving as a power source of the transmission device.The planetary gear set transmission device of a hybrid vehicle according to claim 1, wherein when the transmission device is in the series II mode: the first clutch (15) and the second clutch (16) are both disengaged, the engine outputs power, and the front end motor (18) receives the power output from the engine and transmits the received power to the rear end motor (17) or stores the power energy in a battery; the rear end motor (17) outputs power, and the rear end power source of the motor (17) is the front end motor (18) or the battery.The planetary gearset transmission device of a hybrid vehicle of claim 1, wherein when the transmission device is in direct drive I mode III: the first clutch (15) is engaged, the second clutch (16) is disengaged, and the rear end motor (17) is not operating; the front end motor (18) does not receive power when the battery has sufficient electricity; the front end motor (18) receives a portion of the power output by the engine; and the engine outputs power that is a power output of the transmission device when the battery needs to be charged.The planetary gearset transmission device of a hybrid vehicle of claim 1, wherein when the transmission device is in direct drive II mode IV: the first clutch (15) is disengaged, the second clutch (16) is engaged, and the rear end motor (17) is not operating; the front end motor (18) does not receive power when the battery has sufficient electricity; the front end motor (18) receives a portion of the power output by the engine; and the engine outputs power that is a power output of the transmission device when the battery needs to be charged.The planetary gearset transmission device of a hybrid vehicle of claim 1, wherein when the transmission device is in the V - parallel I - mode: the first clutch (15) is engaged and the second clutch (16) is disengaged; the front end motor (18) does not operate when the battery has sufficient electricity; the front end motor (18) receives a portion of the power output by the engine; and the engine and the rear end motor (17) output power that is a power output of the transmission device when the battery needs to be charged.The planetary gearset transmission device of a hybrid vehicle of claim 1, wherein when the transmission device is in the parallel II VI mode: the first clutch (15) is disengaged and the second clutch (16) is engaged; the front end motor (18) does not operate when the battery has sufficient electricity; the front end motor (18) receives a portion of the power output by the engine; and the engine and the rear end motor (17) output power that is a power output of the transmission device when the battery needs to be charged.The planetary gearset transmission device of a hybrid vehicle according to claim 1, wherein when the transmission device is in the regenerative braking mode VII: the first clutch (15) and the second clutch (16) are both disengaged, the front end motor (17) receives power generated by deceleration braking of a wheel system.The planetary gearset transmission device of a hybrid vehicle according to claim 1, wherein when the transmission device is in the neutral power generation mode VIII: the first clutch (15) and the second clutch (16) are both disengaged; the rear end motor (17) is not operating and the front end motor (18) receives the power output by the engine and stores the received power energy in the battery

Images