A multi-planetary-gear hybrid transmission configuration

Abstract

The present invention discloses a multi-planetary hybrid transmission configuration, which includes two electric motors, five planetary gear sets and an engine. The five planetary gear sets are arranged in sequence. A first clutch and a second clutch are provided between the first planetary gear set and the second planetary gear set. A first brake, a second brake and a third brake are respectively arranged at corresponding positions of the second planetary gear set, the third planetary gear set and the fourth planetary gear set. One electric motor and the engine are drivingly connected to the first planetary gear set, and the other electric motor is drivingly connected to the fifth planetary gear set. The first planetary gear set is used for power splitting. The intermediate speed-changing mechanism is consistent with the structure of the hydraulic automatic transmission, and 6 forward gears can be realized to expand the speed ratio of the mechanical working condition. The fifth planetary gear set is used to increase the output torque of the second electric motor. The first electric motor and the second electric motor achieve the high power requirements under special vehicle conditions and the low fuel consumption requirements under normal conditions through different combined working modes.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission, and particularly relates to a multi-planetary row hybrid transmission configuration. Background Art

[0002] In modern society, the traditional vehicle industry fueled by petroleum provides people with fast and comfortable means of transportation, while increasing the national economy's dependence on fossil energy and deepening the contradiction between energy production and consumption. With the continuous increase of the dual pressures of resources and environment, the development of new energy vehicles has become the future direction of the development of the vehicle industry.

[0003] As a branch of new energy vehicles, hybrid vehicles have the advantages of low emission pollution, long driving range, energy conservation, and no change to the existing infrastructure, and have been widely used. However, the existing hybrid vehicle powertrains have the disadvantages of large occupied space, low cooperation efficiency between the engine and the motor, poor fuel economy, and moreover, the current popular power-split transmissions have fewer gear positions and are difficult to cover the special requirements of high speed and high mobility of wheeled vehicles. Therefore, it is of great development value to improve the powertrain architecture of the hybrid system and develop a hybrid system with superior comprehensive performance. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-planetary row hybrid transmission configuration to solve the problems existing in the prior art.

[0005] The technical solution adopted to achieve the purpose of the present invention is as follows: a multi-planetary row hybrid transmission configuration includes a first motor, a second motor, a first planetary row, a second planetary row, a third planetary row, a fourth planetary row, a fifth planetary row, and an engine.

[0006] The first planetary row, the second planetary row, the third planetary row, the fourth planetary row, and the fifth planetary row are arranged in sequence. A first clutch and a second clutch are provided between the first planetary row and the second planetary row, and a first brake, a second brake, and a third brake are respectively provided at corresponding positions of the second planetary row, the third planetary row, and the fourth planetary row.

[0007] The first planetary row includes a first planetary row sun gear, a first planetary row planet carrier, and a first planetary row ring gear. The second planetary row includes a second planetary row sun gear, a second planetary row planet carrier, and a second planetary row ring gear. The third planetary row includes a third planetary row sun gear, a third planetary row planet carrier, and a third planetary row ring gear. The fourth planetary row includes a fourth planetary row sun gear, a fourth planetary row planet carrier, and a fourth planetary row ring gear. The fifth planetary row includes a fifth planetary row sun gear, a fifth planetary row planet carrier, and a fifth planetary row ring gear.

[0008] The first motor is connected to the sun gear of the first planetary gear set, the engine is connected to the carrier of the first planetary gear set, the ring gear of the first planetary gear set is connected to the passive end of the first clutch and the active end of the second clutch, and the active end of the first clutch is connected to the sun gear of the fourth planetary gear set.

[0009] The passive end of the second clutch is connected to the carrier of the third planetary gear set, and the active end of the second clutch is connected to the sun gear of the second planetary gear set.

[0010] The ring gear of the second planetary gear set is connected to the first brake, and the carrier of the second planetary gear set is connected to the second brake and the sun gear of the third planetary gear set.

[0011] The carrier of the third planetary gear set is connected to the ring gear of the fourth planetary gear set, and the ring gear of the fourth planetary gear set is connected to the third brake. The ring gear of the third planetary gear set is connected to the carrier of the fourth planetary gear set.

[0012] The second motor is connected to the sun gear of the fifth planetary gear set, and the carrier of the fifth planetary gear set is connected to the carrier of the fourth planetary gear set and serves as the output shaft.

[0013] When the vehicle climbs a slope or overcomes an obstacle, the first motor, the second motor and the engine are started simultaneously to output power.

[0014] A multi-planetary-gear hybrid transmission configuration includes a first motor, a second motor, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, a fifth planetary gear set and an engine.

[0015] The first planetary gear set, the second planetary gear set, the third planetary gear set, the fourth planetary gear set and the fifth planetary gear set are arranged in sequence. A first clutch and a second clutch are provided between the first planetary gear set and the second planetary gear set, and a first brake, a second brake and a third brake are respectively provided at corresponding positions of the second planetary gear set, the third planetary gear set and the fourth planetary gear set.

[0016] The first planetary gear set includes a first planetary sun gear, a first planetary carrier and a first planetary ring gear. The second planetary gear set includes a second planetary sun gear, a second planetary carrier and a second planetary ring gear. The third planetary gear set includes a third planetary sun gear, a third planetary carrier and a third planetary ring gear. The fourth planetary gear set includes a fourth planetary sun gear, a fourth planetary carrier and a fourth planetary ring gear. The fifth planetary gear set includes a fifth planetary sun gear, a fifth planetary carrier and a fifth planetary ring gear.

[0017] The first motor is connected to the sun gear of the first planetary gear set, the engine is connected to the ring gear of the first planetary gear set, the carrier of the first planetary gear set is connected to the passive end of the first clutch and the active end of the second clutch, and the active end of the first clutch is connected to the sun gear of the fourth planetary gear set.

[0018] The passive end of the second clutch is connected to the carrier of the third planetary gear set, and the active end of the second clutch is connected to the sun gear of the second planetary gear set.

[0019] The ring gear of the second planetary gear set is connected to the first brake, and the carrier of the second planetary gear set is connected to the second brake and the sun gear of the third planetary gear set.

[0020] The carrier of the third planetary gear set is connected to the ring gear of the fourth planetary gear set, and the ring gear of the fourth planetary gear set is connected to the third brake. The ring gear of the third planetary gear set is connected to the carrier of the fourth planetary gear set.

[0021] The second motor is connected to the sun gear of the fifth planetary gear set, and the carrier of the fifth planetary gear set is connected to the carrier of the fourth planetary gear set to serve as the output shaft.

[0022] When the vehicle climbs a slope or overcomes an obstacle, the first motor, the second motor, and the engine are simultaneously started to output power.

[0023] Furthermore, the engine is connected to the fourth brake, and the ring gear of the fifth planetary gear set is connected to the fifth brake.

[0024] When the vehicle does not require the engine to provide power during driving, the fourth brake is engaged to brake the rotation of the engine.

[0025] When the speed of the second motor reaches a predetermined value, the fifth brake is engaged to reduce the speed of the second motor.

[0026] Furthermore, in the first gear, the first clutch and the third brake are both engaged, and the second clutch, the first brake, and the second brake are all disengaged.

[0027] A part of the power of the first planetary gear set is transmitted to the sun gear of the fourth planetary gear set through the first clutch, the ring gear of the fourth planetary gear set is braked, and the power is transferred to the carrier of the fourth planetary gear set.

[0028] Another part of the power of the first planetary gear set is transmitted to the sun gear of the second planetary gear set through the second clutch, and the power is transferred to the carrier of the fourth planetary gear set through the carrier of the second planetary gear set, the sun gear of the third planetary gear set, and the ring gear of the third planetary gear set. The two parts of power are merged and output.

[0029] When the second motor is started as required, the fifth brake is engaged, the ring gear of the fifth planetary gear set is braked, and the power of the second motor and the power of the carrier of the fifth planetary gear set and the carrier of the fourth planetary gear set are output together.

[0030] The output power of the first planetary gear set is in the same direction as the output power of the carrier of the fourth planetary gear set.

[0031] Further, in the second gear, the first clutch and the second brake are both engaged, while the second clutch, the first brake, and the third brake are all disengaged.

[0032] The power of the first planetary gear set is transmitted to the sun gear of the fourth planetary gear set and the sun gear of the second planetary gear set through the first clutch and the second clutch respectively. The power of the sun gear of the fourth planetary gear set is transferred to the planet carrier of the fourth planetary gear set for output, and the second planetary gear set idles.

[0033] When the second motor is started as required, the fifth brake is engaged, the ring gear of the fifth planetary gear set is braked, and the power of the second motor is output together with the power of the planet carrier of the fourth planetary gear set through the planet carrier of the fifth planetary gear set.

[0034] The output power of the first planetary gear set is in the same direction as the output power of the planet carrier of the fourth planetary gear set.

[0035] Further, in the third gear, the first clutch and the first brake are both engaged, while the second clutch, the second brake, and the third brake are all disengaged.

[0036] A part of the power of the first planetary gear set is transmitted to the sun gear of the fourth planetary gear set through the first clutch, and the power is transferred to the planet carrier of the fourth planetary gear set.

[0037] Another part of the power of the first planetary gear set is transmitted to the sun gear of the second planetary gear set through the second clutch. The ring gear of the second planetary gear set is braked, and the power is transferred to the planet carrier of the fourth planetary gear set through the planet carrier of the second planetary gear set, the sun gear of the third planetary gear set, and the ring gear of the third planetary gear set. The two parts of power are merged and output.

[0038] When the second motor is started as required, the fifth brake is engaged, the ring gear of the fifth planetary gear set is braked, and the power of the second motor is output together with the power of the planet carrier of the fourth planetary gear set through the planet carrier of the fifth planetary gear set.

[0039] The output power of the first planetary gear set is in the same direction as the output power of the planet carrier of the fourth planetary gear set.

[0040] Further, in the fourth gear, the first clutch and the second clutch are both engaged, while the first brake, the second brake, and the third brake are all disengaged.

[0041] The power of the first planetary gear set is transmitted to the sun gear of the second planetary gear set, the planet carrier of the third planetary gear set, and the sun gear of the fourth planetary gear set respectively. The power of the sun gear of the fourth planetary gear set is transmitted to the planet carrier of the fourth planetary gear set. The power of the sun gear of the second planetary gear set is transmitted to the planet carrier of the third planetary gear set through the planet carrier of the second planetary gear set and the sun gear of the third planetary gear set. The power of the planet carrier of the third planetary gear set is transmitted to the planet carrier of the fourth planetary gear set through the ring gear of the third planetary gear set and the ring gear of the fourth planetary gear set and output together.

[0042] When the second motor is started as required, the fifth brake engages, the ring gear of the fifth planetary gear set is braked, and the power of the second motor is output together with the power of the carrier of the fifth planetary gear set and the carrier of the fourth planetary gear set.

[0043] The output power of the first planetary gear set is in the same direction as the output power of the carrier of the fourth planetary gear set.

[0044] Furthermore, in the fifth gear, the second clutch and the first brake both engage, and the first clutch, the second brake, and the third brake all disengage.

[0045] The power of the first planetary gear set is respectively transmitted to the sun gear of the second planetary gear set and the carrier of the third planetary gear set through the second clutch. The ring gear of the second planetary gear set is braked. The power of the sun gear of the second planetary gear set is transmitted to the carrier of the third planetary gear set through the carrier of the second planetary gear set and the sun gear of the third planetary gear set. The carrier of the third planetary gear set transmits the converged power to the carrier of the fourth planetary gear set through the ring gear of the third planetary gear set for output.

[0046] When the second motor is started as required, the fifth brake engages, the ring gear of the fifth planetary gear set is braked, and the power of the second motor is output together with the power of the carrier of the fifth planetary gear set and the carrier of the fourth planetary gear set.

[0047] The output power of the first planetary gear set is in the same direction as the output power of the carrier of the fourth planetary gear set.

[0048] Furthermore, in the sixth gear, the second clutch and the second brake both engage, and the first clutch, the first brake, and the third brake all disengage.

[0049] The power of the first planetary gear set is respectively transmitted to the third planetary gear set and the second planetary gear set through the second clutch. The second planetary gear set rotates idly.

[0050] The sun gear of the third planetary gear set is braked, and the ring gear of the third planetary gear set transmits the power to the carrier of the fourth planetary gear set for output.

[0051] When the second motor is started as required, the fifth brake engages, the ring gear of the fifth planetary gear set is braked, and the power of the second motor is output together with the power of the carrier of the fifth planetary gear set and the carrier of the fourth planetary gear set.

[0052] The output power of the first planetary gear set is in the same direction as the output power of the carrier of the fourth planetary gear set.

[0053] Furthermore, in the reverse gear, the first brake and the third brake both engage, and the first clutch, the second clutch, and the second brake all disengage.

[0054] The power of the first planetary gear set is transmitted to the second planetary gear set through the second clutch. The ring gears of both the second planetary gear set and the fourth planetary gear set are braked. The carrier of the second planetary gear set transmits the power to the sun gear of the third planetary gear set, and the ring gear of the third planetary gear set transmits the power to the carrier of the fourth planetary gear set for output.

[0055] When the second motor is started as required, the fifth brake engages, the ring gear of the fifth planetary gear set is braked, and the power of the second motor is output together with the power of the carrier of the fifth planetary gear set and the carrier of the fourth planetary gear set.

[0056] The output power of the first planetary gear set is opposite to the output power of the carrier of the fourth planetary gear set.

[0057] The technical effects of the present invention are beyond doubt. The present invention replaces the front hydraulic torque converter and the rear hydraulic retarder of the traditional hydraulic automatic transmission with a double motor with planetary gear sets, realizing power splitting, driving without power interruption, and driving with the engine stationary, etc. Compared with the original hydraulic transmission, the transmission efficiency and power performance are significantly improved; on the basis of the existing hydraulic automatic transmission remaining basically unchanged, a transmission configuration with a large power density, high reliability, a wide speed ratio coverage range, and the ability to achieve strong multi-channel power mixing is obtained; in addition, through modular combination, the modular switching between the hybrid transmission and the hydraulic automatic transmission is realized. This configuration can achieve power splitting in multiple gears, meet the special needs of wheeled vehicles, and realize various forms of power mixing through different working modes of the motors. Description of the Drawings

[0058] Figure 1 It is the transmission diagram of the transmission configuration described in Embodiment 1;

[0059] Figure 2 It is the transmission diagram of the transmission configurations described in Embodiments 2 and 3.

[0060] In the figure: the first motor MG1, the second motor MG2, the first planetary gear set P1, the sun gear of the first planetary gear set P11, the carrier of the first planetary gear set P12, the ring gear of the first planetary gear set P13, the second planetary gear set P2, the sun gear of the second planetary gear set P21, the carrier of the second planetary gear set P22, the ring gear of the second planetary gear set P23, the third planetary gear set P3, the sun gear of the third planetary gear set P31, the carrier of the third planetary gear set P32, the ring gear of the third planetary gear set P33, the fourth planetary gear set P4, the sun gear of the fourth planetary gear set P41, the carrier of the fourth planetary gear set P42, the ring gear of the fourth planetary gear set P43, the fifth planetary gear set P5, the sun gear of the fifth planetary gear set P51, the carrier of the fifth planetary gear set P52, the ring gear of the fifth planetary gear set P53, the first clutch C1, the second clutch C2, the first brake C3, the second brake C4, the third brake C5, the fourth brake C6, the fifth brake C7, and the engine 8. Detailed implementation mode

[0061] The present invention will be further described below in conjunction with embodiments, but it should not be understood that the above-mentioned subject matter scope of the present invention is limited to the following embodiments. Without departing from the above-mentioned technical idea of the present invention, various substitutions and changes made according to common general technical knowledge and customary means in the art shall be included within the protection scope of the present invention.

[0062] Embodiment 1:

[0063] This embodiment discloses a multi-planetary-gear hybrid transmission configuration, including a first motor MG1, a second motor MG2, a first planetary gear set P1, a second planetary gear set P2, a third planetary gear set P3, a fourth planetary gear set P4, a fifth planetary gear set P5, and an engine 8.

[0064] See Figure 1 , the first planetary gear set P1, the second planetary gear set P2, the third planetary gear set P3, the fourth planetary gear set P4, and the fifth planetary gear set P5 are arranged in sequence. A first clutch C1 and a second clutch C2 are provided between the first planetary gear set P1 and the second planetary gear set P2. First brakes C3, C4, and C5 are respectively provided at corresponding positions of the second planetary gear set P2, the third planetary gear set P3, and the fourth planetary gear set P4.

[0065] The first planetary gear set P1 includes a first planetary gear set sun gear P11, a first planetary gear set planet carrier P12, and a first planetary gear set ring gear P13. The second planetary gear set P2 includes a second planetary gear set sun gear P21, a second planetary gear set planet carrier P22, and a second planetary gear set ring gear P23. The third planetary gear set P3 includes a third planetary gear set sun gear P31, a third planetary gear set planet carrier P32, and a third planetary gear set ring gear P33. The fourth planetary gear set P4 includes a fourth planetary gear set sun gear P41, a fourth planetary gear set planet carrier P42, and a fourth planetary gear set ring gear P43. The fifth planetary gear set P5 includes a fifth planetary gear set sun gear P51, a fifth planetary gear set planet carrier P52, and a fifth planetary gear set ring gear P53.

[0066] See Figure 1 , the first motor MG1 is connected to the first planetary gear set sun gear P11, the engine 8 is connected to the first planetary gear set planet carrier P12, the first planetary gear set ring gear P13 is connected to the passive end of the first clutch C1 and the active end of the second clutch C2, and the active end of the first clutch C1 is connected to the fourth planetary gear set sun gear P41. The engine 8 is connected to the fourth brake C6. When the vehicle does not require the engine 8 to provide power during driving, the fourth brake C6 is engaged to brake the rotation of the engine 8 to achieve engine static driving.

[0067] The passive end of the second clutch C2 is connected to the carrier P32 of the third planetary gear set, and the active end of the second clutch C2 is connected to the sun gear P21 of the second planetary gear set.

[0068] The ring gear P23 of the second planetary gear set is connected to the first brake C3, and the carrier P22 of the second planetary gear set is connected to the second brake C4 and the sun gear P31 of the third planetary gear set.

[0069] The carrier P32 of the third planetary gear set is connected to the ring gear P43 of the fourth planetary gear set, and the ring gear P43 of the fourth planetary gear set is connected to the third brake C5. The ring gear P33 of the third planetary gear set is connected to the carrier P42 of the fourth planetary gear set.

[0070] The second motor MG2 is connected to the sun gear P51 of the fifth planetary gear set. After the carrier P52 of the fifth planetary gear set is connected to the carrier P42 of the fourth planetary gear set, it serves as the output shaft. The ring gear P53 of the fifth planetary gear set is connected to the fifth brake C7. When the rotational speed of the second motor MG2 reaches a predetermined value, that is, after high-speed operation, the fifth brake C7 is engaged to reduce the rotational speed of the second motor MG2.

[0071] When the vehicle climbs a slope or overcomes an obstacle, the first motor MG1, the second motor MG2, and the engine 8 are simultaneously started to output power.

[0072] Six forward gears and one reverse gear are achieved through the engagement methods shown in the following table:

[0073] Gear position Engaging element R C3, C5 1 C1, C5 2 C1, C4 3 C1, C3 4 C1, C2 5 C2, C3 6 C2, C4

[0074] Specifically: In the first gear, the first clutch C1 and the third brake C5 are both engaged, and the second clutch C2, the first brake C3, and the second brake C4 are all disengaged.

[0075] A part of the power of the first planetary gear set P1 is transmitted to the sun gear P41 of the fourth planetary gear set through the first clutch C1, and the ring gear P43 of the fourth planetary gear set is braked, and the power is transferred to the carrier P42 of the fourth planetary gear set.

[0076] Another part of the power of the first planetary gear set P1 is transmitted to the sun gear P21 of the second planetary gear set through the second clutch C2, and the power is transferred to the carrier P42 of the fourth planetary gear set through the carrier P22 of the second planetary gear set, the sun gear P31 of the third planetary gear set, and the ring gear P33 of the third planetary gear set. The two parts of power are combined and output.

[0077] When the second motor MG2 is started as needed, the fifth brake C7 is engaged, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the carrier P52 of the fifth planetary gear set and the carrier P42 of the fourth planetary gear set.

[0078] The output power of the first planetary gear set P1 is in the same direction as the output power of the carrier P42 of the fourth planetary gear set.

[0079] In second gear, the first clutch C1 and the second brake C4 are both engaged, and the second clutch C2, the first brake C3, and the third brake C5 are all disengaged.

[0080] The power of the first planetary gear set P1 is transmitted to the sun gear P41 of the fourth planetary gear set and the sun gear P21 of the second planetary gear set through the first clutch C1 and the second clutch C2 respectively. The sun gear P41 of the fourth planetary gear set transfers the power to the carrier P42 of the fourth planetary gear set for output, and the second planetary gear set P2 idles.

[0081] When the second motor MG2 is started as required, the fifth brake C7 is engaged, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the carrier P52 of the fifth planetary gear set and the carrier P42 of the fourth planetary gear set.

[0082] The output power of the first planetary gear set P1 is in the same direction as the output power of the carrier P42 of the fourth planetary gear set.

[0083] In third gear, the first clutch C1 and the first brake C3 are both engaged, and the second clutch C2, the second brake C4, and the third brake C5 are all disengaged.

[0084] A part of the power of the first planetary gear set P1 is transmitted to the sun gear P41 of the fourth planetary gear set through the first clutch C1, and the power is transferred to the carrier P42 of the fourth planetary gear set.

[0085] Another part of the power of the first planetary gear set P1 is transmitted to the sun gear P21 of the second planetary gear set through the second clutch C2. The ring gear P23 of the second planetary gear set is braked, and the power is transferred to the carrier P42 of the fourth planetary gear set through the carrier P22 of the second planetary gear set, the sun gear P31 of the third planetary gear set, and the ring gear P33 of the third planetary gear set. The two parts of power are merged and output.

[0086] When the second motor MG2 is started as required, the fifth brake C7 is engaged, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the carrier P52 of the fifth planetary gear set and the carrier P42 of the fourth planetary gear set.

[0087] The output power of the first planetary gear set P1 is in the same direction as the output power of the carrier P42 of the fourth planetary gear set.

[0088] In fourth gear, the first clutch C1 and the second clutch C2 are both engaged, and the first brake C3, the second brake C4, and the third brake C5 are all disengaged.

[0089] The power of the first planetary gear set P1 is respectively transmitted to the sun gear P21 of the second planetary gear set, the planet carrier P32 of the third planetary gear set, and the sun gear P41 of the fourth planetary gear set. The power of the sun gear P41 of the fourth planetary gear set is transmitted to the planet carrier P42 of the fourth planetary gear set. The power of the sun gear P21 of the second planetary gear set is transmitted to the planet carrier P32 of the third planetary gear set through the planet carrier P22 of the second planetary gear set and the sun gear P31 of the third planetary gear set. The power of the planet carrier P32 of the third planetary gear set is transmitted to the planet carrier P42 of the fourth planetary gear set through the ring gear P33 of the third planetary gear set and the ring gear P43 of the fourth planetary gear set and is output together.

[0090] When the second motor MG2 is started as required, the fifth brake C7 engages, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0091] The output power of the first planetary gear set P1 is in the same direction as the output power of the planet carrier P42 of the fourth planetary gear set.

[0092] In fifth gear, the second clutch C2 and the first brake C3 are both engaged, and the first clutch C1, the second brake C4, and the third brake C5 are all disengaged.

[0093] The power of the first planetary gear set P1 is respectively transmitted to the sun gear P21 of the second planetary gear set and the planet carrier P32 of the third planetary gear set through the second clutch C2. The ring gear P23 of the second planetary gear set is braked. The power of the sun gear P21 of the second planetary gear set is transmitted to the planet carrier P32 of the third planetary gear set through the planet carrier P22 of the second planetary gear set and the sun gear P31 of the third planetary gear set. The planet carrier P32 of the third planetary gear set transmits the converged power to the planet carrier P42 of the fourth planetary gear set through the ring gear P33 of the third planetary gear set for output.

[0094] When the second motor MG2 is started as required, the fifth brake C7 engages, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0095] The output power of the first planetary gear set P1 is in the same direction as the output power of the planet carrier P42 of the fourth planetary gear set.

[0096] In sixth gear, the second clutch C2 and the second brake C4 are both engaged, and the first clutch C1, the first brake C3, and the third brake C5 are all disengaged.

[0097] The power of the first planetary gear set P1 is respectively transmitted to the third planetary gear set P3 and the second planetary gear set P2 through the second clutch C2, and the second planetary gear set P2 rotates idly.

[0098] The sun gear P31 of the third planetary gear set is braked, and the ring gear P33 of the third planetary gear set transmits power to the planet carrier P42 of the fourth planetary gear set for output.

[0099] When the second motor MG2 is started as required, the fifth brake C7 engages, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0100] The output power of the first planetary gear set P1 is in the same direction as the output power of the planet carrier P42 of the fourth planetary gear set.

[0101] In reverse gear, the first brake C3 and the third brake C5 both engage, and the first clutch C1, the second clutch C2, and the second brake C4 are all disengaged.

[0102] The power of the first planetary gear set P1 is transmitted to the second planetary gear set P2 through the second clutch C2. The ring gear P23 of the second planetary gear set and the ring gear P43 of the fourth planetary gear set are both braked. The planet carrier P22 of the second planetary gear set transmits power to the sun gear P31 of the third planetary gear set, and the ring gear P33 of the third planetary gear set transmits power to the planet carrier P42 of the fourth planetary gear set for output.

[0103] When the second motor MG2 is started as required, the fifth brake C7 engages, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0104] The output power of the first planetary gear set P1 is in the opposite direction to the output power of the planet carrier P42 of the fourth planetary gear set.

[0105] It should be noted that the characteristics of a multi-planetary-gear hybrid transmission configuration described in this embodiment are as follows: The first planetary gear set P1 is used for power splitting. The intermediate speed-changing mechanism is the same as that of the hydraulic automatic transmission, and 6 forward gears can be realized, expanding the speed ratio of the mechanical working condition. The fifth planetary gear set P5 is used to increase the output torque of the second motor MG2. The first motor MG1 and the second motor MG2 achieve the high power performance requirements under special vehicle conditions and the low fuel consumption requirements under normal conditions through different combined working modes. On the basis of the unchanged original vehicle structure, the intermediate planetary-gear speed-changing mechanism of the original hydraulic automatic transmission remains unchanged, and the front hydraulic torque converter and the rear hydraulic retarder are replaced with a double-motor with planetary gears, realizing power splitting, driving without power interruption, engine idling driving, etc. Compared with the original hydraulic transmission, the transmission efficiency and power performance can be significantly improved.

[0106] Embodiment 2:

[0107] This embodiment discloses a multi-planetary hybrid transmission configuration, including a first motor MG1, a second motor MG2, a first planetary gear set P1, a second planetary gear set P2, a third planetary gear set P3, a fourth planetary gear set P4, a fifth planetary gear set P5, and an engine 8.

[0108] Refer to Figure 2 , the first planetary gear set P1, the second planetary gear set P2, the third planetary gear set P3, the fourth planetary gear set P4, and the fifth planetary gear set P5 are arranged in sequence. A first clutch C1 and a second clutch C2 are provided between the first planetary gear set P1 and the second planetary gear set P2. A first brake C3, a second brake C4, and a third brake C5 are respectively provided at corresponding positions of the second planetary gear set P2, the third planetary gear set P3, and the fourth planetary gear set P4.

[0109] The first planetary gear set P1 includes a first planetary gear set sun gear P11, a first planetary gear set planet carrier P12, and a first planetary gear set ring gear P13. The second planetary gear set P2 includes a second planetary gear set sun gear P21, a second planetary gear set planet carrier P22, and a second planetary gear set ring gear P23. The third planetary gear set P3 includes a third planetary gear set sun gear P31, a third planetary gear set planet carrier P32, and a third planetary gear set ring gear P33. The fourth planetary gear set P4 includes a fourth planetary gear set sun gear P41, a fourth planetary gear set planet carrier P42, and a fourth planetary gear set ring gear P43. The fifth planetary gear set P5 includes a fifth planetary gear set sun gear P51, a fifth planetary gear set planet carrier P52, and a fifth planetary gear set ring gear P53.

[0110] Refer to Figure 2 , the first motor MG1 is connected to the first planetary gear set sun gear P11, the engine 8 is connected to the first planetary gear set ring gear P13. The first planetary gear set planet carrier P12 is connected to the passive end of the first clutch C1 and the active end of the second clutch C2. The active end of the first clutch C1 is connected to the fourth planetary gear set sun gear P41. The engine 8 is connected to the fourth brake C6. When the vehicle does not require the engine 8 to provide power during driving, the fourth brake C6 is engaged to brake the rotation of the engine 8, realizing the static driving of the engine.

[0111] The passive end of the second clutch C2 is connected to the third planetary gear set planet carrier P32, and the active end of the second clutch C2 is connected to the second planetary gear set sun gear P21.

[0112] The second planetary gear set ring gear P23 is connected to the first brake C3, and the second planetary gear set planet carrier P22 is connected to the second brake C4 and the third planetary gear set sun gear P31.

[0113] The ring gear P33 of the third planetary gear set is connected to the planet carrier P42 of the fourth planetary gear set. The ring gear P43 of the fourth planetary gear set is connected to the third brake C5. The planet carrier P32 of the third planetary gear set is connected to the ring gear P43 of the fourth planetary gear set.

[0114] The second motor MG2 is connected to the sun gear P51 of the fifth planetary gear set. The planet carrier P52 of the fifth planetary gear set is connected to the planet carrier P42 of the fourth planetary gear set and serves as the output shaft. The ring gear P53 of the fifth planetary gear set is connected to the fifth brake C7. When the rotational speed of the second motor MG2 reaches a predetermined value, i.e., after high-speed operation, the fifth brake C7 is engaged to reduce the rotational speed of the second motor MG2.

[0115] When the vehicle climbs a slope or overcomes an obstacle, the first motor MG1, the second motor MG2, and the engine 8 are simultaneously started to output power.

[0116] Six forward gears and one reverse gear are achieved through the engagement modes shown in the following table:

[0117] Gear position Engaging element R C3, C5 1 C1, C5 2 C1, C4 3 C1, C3 4 C1, C2 5 C2, C3 6 C2, C4

[0118] Specifically: In first gear, the first clutch C1 and the third brake C5 are both engaged, and the second clutch C2, the first brake C3, and the second brake C4 are all disengaged.

[0119] Part of the power of the first planetary gear set P1 is transmitted to the sun gear P41 of the fourth planetary gear set through the first clutch C1. The ring gear P43 of the fourth planetary gear set is braked, and the power is transferred to the planet carrier P42 of the fourth planetary gear set.

[0120] Another part of the power of the first planetary gear set P1 is transmitted to the sun gear P21 of the second planetary gear set through the second clutch C2. The power is transferred to the planet carrier P42 of the fourth planetary gear set through the planet carrier P22 of the second planetary gear set, the sun gear P31 of the third planetary gear set, and the ring gear P33 of the third planetary gear set. The two parts of power are combined and output.

[0121] When the second motor MG2 is started as needed, the fifth brake C7 is engaged, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0122] The output power of the first planetary gear set P1 is in the same direction as the output power of the planet carrier P42 of the fourth planetary gear set.

[0123] In second gear, the first clutch C1 and the second brake C4 are both engaged, and the second clutch C2, the first brake C3, and the third brake C5 are all disengaged.

[0124] The power of the first planetary gear set P1 is transmitted to the sun gear P41 of the fourth planetary gear set and the sun gear P21 of the second planetary gear set through the first clutch C1 and the second clutch C2 respectively. The sun gear P41 of the fourth planetary gear set transfers the power to the planet carrier P42 of the fourth planetary gear set for output, and the second planetary gear set P2 idles.

[0125] When the second motor MG2 is started as required, the fifth brake C7 engages, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0126] The output power of the first planetary gear set P1 is in the same direction as the output power of the planet carrier P42 of the fourth planetary gear set.

[0127] In the third gear, the first clutch C1 and the first brake C3 are both engaged, and the second clutch C2, the second brake C4, and the third brake C5 are all disengaged.

[0128] A part of the power of the first planetary gear set P1 is transmitted to the sun gear P41 of the fourth planetary gear set through the first clutch C1, and the power is transferred to the planet carrier P42 of the fourth planetary gear set.

[0129] Another part of the power of the first planetary gear set P1 is transmitted to the sun gear P21 of the second planetary gear set through the second clutch C2. The ring gear P23 of the second planetary gear set is braked, and the power is transferred to the planet carrier P42 of the fourth planetary gear set through the planet carrier P22 of the second planetary gear set, the sun gear P31 of the third planetary gear set, and the ring gear P33 of the third planetary gear set. The two parts of power are merged and output.

[0130] When the second motor MG2 is started as required, the fifth brake C7 engages, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0131] The output power of the first planetary gear set P1 is in the same direction as the output power of the planet carrier P42 of the fourth planetary gear set.

[0132] In the fourth gear, the first clutch C1 and the second clutch C2 are both engaged, and the first brake C3, the second brake C4, and the third brake C5 are all disengaged.

[0133] The power of the first planetary gear set P1 is respectively transmitted to the sun gear P21 of the second planetary gear set, the carrier P32 of the third planetary gear set, and the sun gear P41 of the fourth planetary gear set. The power of the sun gear P41 of the fourth planetary gear set is transmitted to the carrier P42 of the fourth planetary gear set. The power of the sun gear P21 of the second planetary gear set is transmitted to the carrier P32 of the third planetary gear set through the carrier P22 of the second planetary gear set and the sun gear P31 of the third planetary gear set. The power of the carrier P32 of the third planetary gear set is transmitted to the carrier P42 of the fourth planetary gear set through the ring gear P33 of the third planetary gear set and the ring gear P43 of the fourth planetary gear set for combined output.

[0134] When the second motor MG2 is started as required, the fifth brake C7 engages, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the carrier P52 of the fifth planetary gear set and the carrier P42 of the fourth planetary gear set.

[0135] The output power of the first planetary gear set P1 is in the same direction as the output power of the carrier P42 of the fourth planetary gear set.

[0136] In fifth gear, the second clutch C2 and the first brake C3 are both engaged, and the first clutch C1, the second brake C4, and the third brake C5 are all disengaged.

[0137] The power of the first planetary gear set P1 is respectively transmitted to the sun gear P21 of the second planetary gear set and the carrier P32 of the third planetary gear set through the second clutch C2. The ring gear P23 of the second planetary gear set is braked. The power of the sun gear P21 of the second planetary gear set is transmitted to the carrier P32 of the third planetary gear set through the carrier P22 of the second planetary gear set and the sun gear P31 of the third planetary gear set. The carrier P32 of the third planetary gear set transmits the combined power to the carrier P42 of the fourth planetary gear set through the ring gear P33 of the third planetary gear set for output.

[0138] When the second motor MG2 is started as required, the fifth brake C7 engages, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the carrier P52 of the fifth planetary gear set and the carrier P42 of the fourth planetary gear set.

[0139] The output power of the first planetary gear set P1 is in the same direction as the output power of the carrier P42 of the fourth planetary gear set.

[0140] In sixth gear, the second clutch C2 and the second brake C4 are both engaged, and the first clutch C1, the first brake C3, and the third brake C5 are all disengaged.

[0141] The power of the first planetary gear set P1 is respectively transmitted to the third planetary gear set P3 and the second planetary gear set P2 through the second clutch C2, and the second planetary gear set P2 rotates idly.

[0142] The sun gear P31 of the third planetary gear set is braked, and the ring gear P33 of the third planetary gear set transmits power to the planet carrier P42 of the fourth planetary gear set for output.

[0143] When the second motor MG2 is started as required, the fifth brake C7 engages, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0144] The output power of the first planetary gear set P1 is in the same direction as the output power of the planet carrier P42 of the fourth planetary gear set.

[0145] In reverse gear, the first brake C3 and the third brake C5 both engage, and the first clutch C1, the second clutch C2, and the second brake C4 are all disengaged.

[0146] The power of the first planetary gear set P1 is transmitted to the second planetary gear set P2 through the second clutch C2. The ring gears P23 and P43 of the second planetary gear set are both braked, and the planet carrier P22 of the second planetary gear set transmits power to the sun gear P31 of the third planetary gear set. The ring gear P33 of the third planetary gear set transmits power to the planet carrier P42 of the fourth planetary gear set for output.

[0147] When the second motor MG2 is started as required, the fifth brake C7 engages, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0148] The output power of the first planetary gear set P1 is in the opposite direction to the output power of the planet carrier P42 of the fourth planetary gear set.

[0149] It should be noted that the characteristics of a multi-planetary gear set hybrid transmission configuration described in this embodiment are as follows: the first planetary gear set P1 is used for power splitting, the intermediate speed change mechanism is the same as the structure of the hydraulic automatic transmission, 6 forward gears can be realized, the speed ratio of the mechanical working condition is expanded, the fifth planetary gear set P5 is used to increase the output torque of the second motor MG2, and the first motor MG1 and the second motor MG2 achieve the high power performance requirements under special vehicle working conditions and the low fuel consumption requirements under conventional working conditions through different combined working modes. On the basis of the unchanged original vehicle structure, the intermediate planetary gear set speed change mechanism of the original hydraulic automatic transmission remains unchanged, and the front hydraulic torque converter and the rear hydraulic retarder are replaced with a double-motor with planetary gear sets to achieve power splitting, non-power interruption driving, engine stationary driving, etc. Compared with the original hydraulic transmission, the transmission efficiency and power performance can be significantly improved.

[0150] Embodiment 3:

[0151] This embodiment discloses a multi-planetary-gear hybrid transmission configuration, characterized in that it includes a first motor MG1, a second motor MG2, a first planetary gear set P1, a second planetary gear set P2, a third planetary gear set P3, a fourth planetary gear set P4, a fifth planetary gear set P5, and an engine 8.

[0152] See Figure 2 , the first planetary gear set P1, the second planetary gear set P2, the third planetary gear set P3, the fourth planetary gear set P4, and the fifth planetary gear set P5 are arranged in sequence. A first clutch C1 and a second clutch C2 are provided between the first planetary gear set P1 and the second planetary gear set P2. A first brake C3, a second brake C4, and a third brake C5 are respectively provided at corresponding positions of the second planetary gear set P2, the third planetary gear set P3, and the fourth planetary gear set P4.

[0153] The first planetary gear set P1 includes a first planetary gear set sun gear P11, a first planetary gear set planet carrier P12, and a first planetary gear set ring gear P13. The second planetary gear set P2 includes a second planetary gear set sun gear P21, a second planetary gear set planet carrier P22, and a second planetary gear set ring gear P23. The third planetary gear set P3 includes a third planetary gear set sun gear P31, a third planetary gear set planet carrier P32, and a third planetary gear set ring gear P33. The fourth planetary gear set P4 includes a fourth planetary gear set sun gear P41, a fourth planetary gear set planet carrier P42, and a fourth planetary gear set ring gear P43. The fifth planetary gear set P5 includes a fifth planetary gear set sun gear P51, a fifth planetary gear set planet carrier P52, and a fifth planetary gear set ring gear P53.

[0154] See Figure 2 , the first motor MG1 is connected to the first planetary gear set sun gear P11, the engine 8 is connected to the first planetary gear set ring gear P13, the first planetary gear set planet carrier P12 is connected to the passive end of the first clutch C1 and the active end of the second clutch C2, and the active end of the first clutch C1 is connected to the fourth planetary gear set sun gear P41.

[0155] The passive end of the second clutch C2 is connected to the third planetary gear set planet carrier P32, and the active end of the second clutch C2 is connected to the second planetary gear set sun gear P21.

[0156] The second planetary gear set ring gear P23 is connected to the first brake C3, and the second planetary gear set planet carrier P22 is connected to the second brake C4 and the third planetary gear set sun gear P31.

[0157] The third planetary gear set planet carrier P32 is connected to the fourth planetary gear set ring gear P43, and the fourth planetary gear set ring gear P43 is connected to the third brake C5. The third planetary gear set ring gear P33 is connected to the fourth planetary gear set planet carrier P42.

[0158] The second motor MG2 is connected to the sun gear P51 of the fifth planetary gear set, and the carrier P52 of the fifth planetary gear set is connected to the carrier P42 of the fourth planetary gear set and serves as the output shaft.

[0159] When the vehicle climbs a slope or overcomes an obstacle, the first motor MG1, the second motor MG2, and the engine 8 are simultaneously started to output power.

[0160] Embodiment 4:

[0161] The main structure of this embodiment is the same as that of Embodiment 3. Further, referring to Figure 2 , the engine 8 is connected to the fourth brake C6, and the ring gear P53 of the fifth planetary gear set is connected to the fifth brake C7.

[0162] When the vehicle does not require the engine 8 to provide power during driving, engage the fourth brake C6 to brake the rotation of the engine 8.

[0163] When the rotational speed of the second motor MG2 reaches a predetermined value, engage the fifth brake C7 to reduce the rotational speed of the second motor MG2.

[0164] Embodiment 5:

[0165] The main structure of this embodiment is the same as that of Embodiment 3. Further, in the first gear, the first clutch C1 and the third brake C5 are both engaged, and the second clutch C2, the first brake C3, and the second brake C4 are all disengaged.

[0166] A part of the power of the first planetary gear set P1 is transmitted to the sun gear P41 of the fourth planetary gear set through the first clutch C1, and the ring gear P43 of the fourth planetary gear set is braked, and the power is transferred to the carrier P42 of the fourth planetary gear set.

[0167] Another part of the power of the first planetary gear set P1 is transmitted to the sun gear P21 of the second planetary gear set through the second clutch C2, and the power is transferred to the carrier P42 of the fourth planetary gear set through the carrier P22 of the second planetary gear set, the sun gear P31 of the third planetary gear set, and the ring gear P33 of the third planetary gear set. The two parts of power are combined and output.

[0168] When the second motor MG2 is started as needed, the fifth brake C7 is engaged, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the carrier P52 of the fifth planetary gear set and the carrier P42 of the fourth planetary gear set.

[0169] The output power of the first planetary gear set P1 is in the same direction as the output power of the carrier P42 of the fourth planetary gear set.

[0170] Embodiment 6:

[0171] The main structure of this embodiment is the same as that of Embodiment 3. Further, in the second gear, the first clutch C1 and the second brake C4 are both engaged, and the second clutch C2, the first brake C3, and the third brake C5 are all disengaged.

[0172] The power of the first planetary gear set P1 is transmitted to the sun gear P41 of the fourth planetary gear set and the sun gear P21 of the second planetary gear set through the first clutch C1 and the second clutch C2 respectively. The sun gear P41 of the fourth planetary gear set transfers the power to the planet carrier P42 of the fourth planetary gear set for output, and the second planetary gear set P2 idles.

[0173] When the second motor MG2 is started as needed, the fifth brake C7 is engaged, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0174] The output power of the first planetary gear set P1 is in the same direction as the output power of the planet carrier P42 of the fourth planetary gear set.

[0175] Embodiment 7:

[0176] The main structure of this embodiment is the same as that of Embodiment 3. Further, in the third gear, the first clutch C1 and the first brake C3 are both engaged, and the second clutch C2, the second brake C4, and the third brake C5 are all disengaged.

[0177] A part of the power of the first planetary gear set P1 is transmitted to the sun gear P41 of the fourth planetary gear set through the first clutch C1, and the power is transferred to the planet carrier P42 of the fourth planetary gear set.

[0178] Another part of the power of the first planetary gear set P1 is transmitted to the sun gear P21 of the second planetary gear set through the second clutch C2. The ring gear P23 of the second planetary gear set is braked, and the power is transferred to the planet carrier P42 of the fourth planetary gear set through the planet carrier P22 of the second planetary gear set, the sun gear P31 of the third planetary gear set, and the ring gear P33 of the third planetary gear set. The two parts of power are merged and output.

[0179] When the second motor MG2 is started as needed, the fifth brake C7 is engaged, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0180] The output power of the first planetary gear set P1 is in the same direction as the output power of the planet carrier P42 of the fourth planetary gear set.

[0181] Embodiment 8:

[0182] The main structure of this embodiment is the same as that of Embodiment 3. Further, in the fourth gear, the first clutch C1 and the second clutch C2 are both engaged, and the first brake C3, the second brake C4, and the third brake C5 are all disengaged.

[0183] The power of the first planetary gear set P1 is respectively transmitted to the sun gear P21 of the second planetary gear set, the carrier P32 of the third planetary gear set, and the sun gear P41 of the fourth planetary gear set. The power of the sun gear P41 of the fourth planetary gear set is transmitted to the carrier P42 of the fourth planetary gear set. The power of the sun gear P21 of the second planetary gear set is transmitted to the carrier P32 of the third planetary gear set through the carrier P22 of the second planetary gear set and the sun gear P31 of the third planetary gear set. The power of the carrier P32 of the third planetary gear set is transmitted to the carrier P42 of the fourth planetary gear set through the ring gear P33 of the third planetary gear set and the ring gear P43 of the fourth planetary gear set and output together.

[0184] When the second motor MG2 is started as needed, the fifth brake C7 is engaged, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the carrier P52 of the fifth planetary gear set and the carrier P42 of the fourth planetary gear set.

[0185] The output power of the first planetary gear set P1 is in the same direction as the output power of the carrier P42 of the fourth planetary gear set.

[0186] Embodiment 9:

[0187] The main structure of this embodiment is the same as that of Embodiment 3. Further, in the fifth gear, the second clutch C2 and the first brake C3 are both engaged, and the first clutch C1, the second brake C4, and the third brake C5 are all disengaged.

[0188] The power of the first planetary gear set P1 is respectively transmitted to the sun gear P21 of the second planetary gear set and the carrier P32 of the third planetary gear set through the second clutch C2. The ring gear P23 of the second planetary gear set is braked. The power of the sun gear P21 of the second planetary gear set is transmitted to the carrier P32 of the third planetary gear set through the carrier P22 of the second planetary gear set and the sun gear P31 of the third planetary gear set. The carrier P32 of the third planetary gear set transmits the converged power to the carrier P42 of the fourth planetary gear set through the ring gear P33 of the third planetary gear set for output.

[0189] When the second motor MG2 is started as needed, the fifth brake C7 is engaged, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the carrier P52 of the fifth planetary gear set and the carrier P42 of the fourth planetary gear set.

[0190] The output power of the first planetary gear set P1 is in the same direction as the output power of the carrier P42 of the fourth planetary gear set.

[0191] Embodiment 10:

[0192] The main structure of this embodiment is the same as that of Embodiment 3. Further, in the sixth gear, the second clutch C2 and the second brake C4 are both engaged, and the first clutch C1, the first brake C3, and the third brake C5 are all disengaged.

[0193] The power of the first planetary gear set P1 is transmitted to the third planetary gear set P3 and the second planetary gear set P2 respectively through the second clutch C2, and the second planetary gear set P2 idles.

[0194] The sun gear P31 of the third planetary gear set is braked, and the ring gear P33 of the third planetary gear set transmits the power to the planet carrier P42 of the fourth planetary gear set for output.

[0195] When the second motor MG2 is started as required, the fifth brake C7 is engaged, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0196] The output power of the first planetary gear set P1 is in the same direction as the output power of the planet carrier P42 of the fourth planetary gear set.

[0197] Embodiment 11:

[0198] The main structure of this embodiment is the same as that of Embodiment 3. Further, in the reverse gear, the first brake C3 and the third brake C5 are both engaged, and the first clutch C1, the second clutch C2, and the second brake C4 are all disengaged.

[0199] The power of the first planetary gear set P1 is transmitted to the second planetary gear set P2 through the second clutch C2. The ring gears P23 and P43 of the second planetary gear set are both braked, and the planet carrier P22 of the second planetary gear set transmits the power to the sun gear P31 of the third planetary gear set. The ring gear P33 of the third planetary gear set transmits the power to the planet carrier P42 of the fourth planetary gear set for output.

[0200] When the second motor MG2 is started as required, the fifth brake C7 is engaged, the ring gear P53 of the fifth planetary gear set is braked, and the power of the second motor MG2 is output together with the power of the planet carrier P52 of the fifth planetary gear set and the planet carrier P42 of the fourth planetary gear set.

[0201] The output power of the first planetary gear set P1 is in the opposite direction to the output power of the planet carrier P42 of the fourth planetary gear set.

Claims

1. A multi-planetary-gear hybrid transmission configuration, characterized in that: It includes a first motor (MG1), a second motor (MG2), a first planetary gear set (P1), a second planetary gear set (P2), a third planetary gear set (P3), a fourth planetary gear set (P4), a fifth planetary gear set (P5), and an engine (8); The first planetary gear set (P1), the second planetary gear set (P2), the third planetary gear set (P3), the fourth planetary gear set (P4), and the fifth planetary gear set (P5) are arranged in sequence. A first clutch (C1) and a second clutch (C2) are provided between the first planetary gear set (P1) and the second planetary gear set (P2). A first brake (C3), a second brake (C4), and a third brake (C5) are respectively provided at corresponding positions of the second planetary gear set (P2), the third planetary gear set (P3), and the fourth planetary gear set (P4); The first planetary gear set (P1) includes a first planetary gear set sun gear (P11), a first planetary gear set planet carrier (P12), and a first planetary gear set ring gear (P13). The second planetary gear set (P2) includes a second planetary gear set sun gear (P21), a second planetary gear set planet carrier (P22), and a second planetary gear set ring gear (P23). The third planetary gear set (P3) includes a third planetary gear set sun gear (P31), a third planetary gear set planet carrier (P32), and a third planetary gear set ring gear (P33). The fourth planetary gear set (P4) includes a fourth planetary gear set sun gear (P41), a fourth planetary gear set planet carrier (P42), and a fourth planetary gear set ring gear (P43). The fifth planetary gear set (P5) includes a fifth planetary gear set sun gear (P51), a fifth planetary gear set planet carrier (P52), and a fifth planetary gear set ring gear (P53); The first motor (MG1) is connected to the first planetary gear set sun gear (P11). The engine (8) is connected to the first planetary gear set planet carrier (P12). The first planetary gear set ring gear (P13) is connected to the passive end of the first clutch (C1) and the active end of the second clutch (C2). The active end of the first clutch (C1) is connected to the fourth planetary gear set sun gear (P41); The passive end of the second clutch (C2) is connected to the third planetary gear set planet carrier (P32). The active end of the second clutch (C2) is connected to the second planetary gear set sun gear (P21); The second planetary gear set ring gear (P23) is connected to the first brake (C3). The second planetary gear set planet carrier (P22) is connected to the second brake (C4) and the third planetary gear set sun gear (P31); The third planetary gear set planet carrier (P32) is connected to the fourth planetary gear set ring gear (P43). The fourth planetary gear set ring gear (P43) is connected to the third brake (C5). The third planetary gear set ring gear (P33) is connected to the fourth planetary gear set planet carrier (P42); The second motor (MG2) is connected to the fifth planetary gear set sun gear (P51). The fifth planetary gear set planet carrier (P52) is connected to the fourth planetary gear set planet carrier (P42) and then serves as an output shaft; When the vehicle climbs a slope or overcomes an obstacle, the first motor (MG1), the second motor (MG2), and the engine (8) are simultaneously started to output power.

2. A multi-planetary-gear hybrid transmission configuration according to claim 1, characterized in that: The engine (8) is connected to the fourth brake (C6), and the ring gear (P53) of the fifth planetary gear set is connected to the fifth brake (C7); When the vehicle does not require the engine (8) to provide power during driving, engage the fourth brake (C6) to brake the rotation of the engine (8); When the rotational speed of the second motor (MG2) reaches a predetermined value, engage the fifth brake (C7) to reduce the rotational speed of the second motor (MG2).

3. A multi-planetary-gear hybrid transmission configuration according to claim 1, characterized in that: In first gear, the first clutch (C1) and the third brake (C5) are both engaged, and the second clutch (C2), the first brake (C3), and the second brake (C4) are all disengaged; A part of the power of the first planetary gear set (P1) is transmitted to the sun gear (P41) of the fourth planetary gear set through the first clutch (C1), the ring gear (P43) of the fourth planetary gear set is braked, and the power is transferred to the planet carrier (P42) of the fourth planetary gear set; Another part of the power of the first planetary gear set (P1) is transmitted to the sun gear (P21) of the second planetary gear set through the second clutch (C2), and the power is transferred to the planet carrier (P42) of the fourth planetary gear set through the planet carrier (P22) of the second planetary gear set, the sun gear (P31) of the third planetary gear set, and the ring gear (P33) of the third planetary gear set. The two parts of power are merged and output; When the second motor (MG2) is started as required, the fifth brake (C7) is engaged, the ring gear (P53) of the fifth planetary gear set is braked, and the power of the second motor (MG2) is output together with the power of the planet carrier (P52) of the fifth planetary gear set and the planet carrier (P42) of the fourth planetary gear set; The output power of the first planetary gear set (P1) is in the same direction as the output power of the planet carrier (P42) of the fourth planetary gear set.

4. A multi-planetary hybrid transmission configuration according to claim 1, characterized in that: In second gear, the first clutch (C1) and the second brake (C4) are both engaged, and the second clutch (C2), the first brake (C3), and the third brake (C5) are all disengaged; The power of the first planetary gear set (P1) is transmitted to the sun gear (P41) of the fourth planetary gear set and the sun gear (P21) of the second planetary gear set through the first clutch (C1) and the second clutch (C2) respectively. The sun gear (P41) of the fourth planetary gear set transfers the power to the planet carrier (P42) of the fourth planetary gear set for output, and the second planetary gear set (P2) idles; When the second motor (MG2) is started as required, the fifth brake (C7) is engaged, the ring gear (P53) of the fifth planetary gear set is braked, and the power of the second motor (MG2) is output together with the power of the planet carrier (P52) of the fifth planetary gear set and the planet carrier (P42) of the fourth planetary gear set; The output power of the first planetary gear set (P1) is in the same direction as the output power of the planet carrier (P42) of the fourth planetary gear set.

5. A multi-planetary-gear hybrid transmission configuration according to claim 1, characterized in that: In third gear, the first clutch (C1) and the first brake (C3) are both engaged, and the second clutch (C2), the second brake (C4), and the third brake (C5) are all disengaged; A part of the power of the first planetary gear set (P1) is transmitted to the sun gear (P41) of the fourth planetary gear set through the first clutch (C1), and the power is transferred to the planet carrier (P42) of the fourth planetary gear set; Another part of the power of the first planetary gear set (P1) is transmitted to the sun gear (P21) of the second planetary gear set through the second clutch (C2). The ring gear (P23) of the second planetary gear set is braked, and the power is transferred to the carrier (P42) of the fourth planetary gear set through the carrier (P22) of the second planetary gear set, the sun gear (P31) of the third planetary gear set, and the ring gear (P33) of the third planetary gear set. The two parts of power are merged and output. When the second motor (MG2) is started as required, the fifth brake (C7) engages, the ring gear (P53) of the fifth planetary gear set is braked, and the power of the second motor (MG2) is output together with the power of the carrier (P52) of the fifth planetary gear set and the carrier (P42) of the fourth planetary gear set. The output power of the first planetary gear set (P1) is in the same direction as the output power of the carrier (P42) of the fourth planetary gear set.

6. A multi-planetary-gear hybrid transmission configuration according to claim 1, characterized in that: In the fourth gear, the first clutch (C1) and the second clutch (C2) both engage, and the first brake (C3), the second brake (C4), and the third brake (C5) all disengage. The power of the first planetary gear set (P1) is respectively transmitted to the sun gear (P21) of the second planetary gear set, the carrier (P32) of the third planetary gear set, and the sun gear (P41) of the fourth planetary gear set. The power of the sun gear (P41) of the fourth planetary gear set is transmitted to the carrier (P42) of the fourth planetary gear set. The power of the sun gear (P21) of the second planetary gear set is transmitted to the carrier (P32) of the third planetary gear set through the carrier (P22) of the second planetary gear set and the sun gear (P31) of the third planetary gear set. The power of the carrier (P32) of the third planetary gear set is transmitted to the carrier (P42) of the fourth planetary gear set through the ring gear (P33) of the third planetary gear set and the ring gear (P43) of the fourth planetary gear set and is output together. When the second motor (MG2) is started as required, the fifth brake (C7) engages, the ring gear (P53) of the fifth planetary gear set is braked, and the power of the second motor (MG2) is output together with the power of the carrier (P52) of the fifth planetary gear set and the carrier (P42) of the fourth planetary gear set. The output power of the first planetary gear set (P1) is in the same direction as the output power of the carrier (P42) of the fourth planetary gear set.

7. A multi-planetary-gear hybrid transmission configuration according to claim 1, characterized in that: In the fifth gear, the second clutch (C2) and the first brake (C3) both engage, and the first clutch (C1), the second brake (C4), and the third brake (C5) all disengage. The power of the first planetary gear set (P1) is respectively transmitted to the sun gear (P21) of the second planetary gear set and the carrier (P32) of the third planetary gear set through the second clutch (C2). The ring gear (P23) of the second planetary gear set is braked. The power of the sun gear (P21) of the second planetary gear set is transmitted to the carrier (P32) of the third planetary gear set through the carrier (P22) of the second planetary gear set and the sun gear (P31) of the third planetary gear set. The carrier (P32) of the third planetary gear set transmits the converged power to the carrier (P42) of the fourth planetary gear set through the ring gear (P33) of the third planetary gear set for output. When the second motor (MG2) is started as required, the fifth brake (C7) engages, the ring gear (P53) of the fifth planetary gear set is braked, and the power of the second motor (MG2) is output together with the power of the carrier (P52) of the fifth planetary gear set and the carrier (P42) of the fourth planetary gear set; The output power of the first planetary gear set (P1) is in the same direction as the output power of the carrier (P42) of the fourth planetary gear set.

8. A multi-planetary-gear hybrid transmission configuration according to claim 1, characterized in that: In the sixth gear, the second clutch (C2) and the second brake (C4) are both engaged, and the first clutch (C1), the first brake (C3), and the third brake (C5) are all disengaged; The power of the first planetary gear set (P1) is transmitted to the third planetary gear set (P3) and the second planetary gear set (P2) respectively through the second clutch (C2), and the second planetary gear set (P2) idles; The sun gear (P31) of the third planetary gear set is braked, and the ring gear (P33) of the third planetary gear set transmits the power to the carrier (P42) of the fourth planetary gear set for output; When the second motor (MG2) is started as required, the fifth brake (C7) engages, the ring gear (P53) of the fifth planetary gear set is braked, and the power of the second motor (MG2) is output together with the power of the carrier (P52) of the fifth planetary gear set and the carrier (P42) of the fourth planetary gear set; The output power of the first planetary gear set (P1) is in the same direction as the output power of the carrier (P42) of the fourth planetary gear set.

9. A multi-planetary-gear hybrid transmission configuration according to claim 1, characterized in that: In the reverse gear, the first brake (C3) and the third brake (C5) are both engaged, and the first clutch (C1), the second clutch (C2), and the second brake (C4) are all disengaged; The power of the first planetary gear set (P1) is transmitted to the second planetary gear set (P2) through the second clutch (C2), the ring gears (P23) of the second planetary gear set and (P43) of the fourth planetary gear set are both braked, the carrier (P22) of the second planetary gear set transmits the power to the sun gear (P31) of the third planetary gear set, and the ring gear (P33) of the third planetary gear set transmits the power to the carrier (P42) of the fourth planetary gear set for output; When the second motor (MG2) is started as required, the fifth brake (C7) engages, the ring gear (P53) of the fifth planetary gear set is braked, and the power of the second motor (MG2) is output together with the power of the carrier (P52) of the fifth planetary gear set and the carrier (P42) of the fourth planetary gear set; The output power of the first planetary gear set (P1) is in the opposite direction to the output power of the carrier (P42) of the fourth planetary gear set.

10. A multi-planetary-gear hybrid transmission configuration, characterized in that: It includes a first motor (MG1), a second motor (MG2), a first planetary gear set (P1), a second planetary gear set (P2), a third planetary gear set (P3), a fourth planetary gear set (P4), a fifth planetary gear set (P5), and an engine (8); The first planetary gear set (P1), the second planetary gear set (P2), the third planetary gear set (P3), the fourth planetary gear set (P4), and the fifth planetary gear set (P5) are arranged in sequence. A first clutch (C1) and a second clutch (C2) are provided between the first planetary gear set (P1) and the second planetary gear set (P2). A first brake (C3), a second brake (C4), and a third brake (C5) are respectively provided at corresponding positions of the second planetary gear set (P2), the third planetary gear set (P3), and the fourth planetary gear set (P4); The first planetary gear set (P1) includes a first planetary gear set sun gear (P11), a first planetary gear set carrier (P12), and a first planetary gear set ring gear (P13). The second planetary gear set (P2) includes a second planetary gear set sun gear (P21), a second planetary gear set carrier (P22), and a second planetary gear set ring gear (P23). The third planetary gear set (P3) includes a third planetary gear set sun gear (P31), a third planetary gear set carrier (P32), and a third planetary gear set ring gear (P33). The fourth planetary gear set (P4) includes a fourth planetary gear set sun gear (P41), a fourth planetary gear set carrier (P42), and a fourth planetary gear set ring gear (P43). The fifth planetary gear set (P5) includes a fifth planetary gear set sun gear (P51), a fifth planetary gear set carrier (P52), and a fifth planetary gear set ring gear (P53); The first electric motor (MG1) is connected to the first planetary gear set sun gear (P11). The engine (8) is connected to the first planetary gear set ring gear (P13). The first planetary gear set carrier (P12) is connected to the passive end of the first clutch (C1) and the active end of the second clutch (C2). The active end of the first clutch (C1) is connected to the fourth planetary gear set sun gear (P41); The passive end of the second clutch (C2) is connected to the third planetary gear set carrier (P32). The active end of the second clutch (C2) is connected to the second planetary gear set sun gear (P21); The second planetary gear set ring gear (P23) is connected to the first brake (C3). The second planetary gear set carrier (P22) is connected to the second brake (C4) and the third planetary gear set sun gear (P31); The third planetary gear set carrier (P32) is connected to the fourth planetary gear set ring gear (P43). The fourth planetary gear set ring gear (P43) is connected to the third brake (C5); The third planetary gear set ring gear (P33) is connected to the fourth planetary gear set carrier (P42); The second electric motor (MG2) is connected to the fifth planetary gear set sun gear (P51). The fifth planetary gear set carrier (P52) is connected to the fourth planetary gear set carrier (P42) and then serves as an output shaft; When the vehicle climbs a slope or overcomes an obstacle, the first electric motor (MG1), the second electric motor (MG2), and the engine (8) are simultaneously started to output power.

11. A multi-planetary-gear hybrid transmission configuration according to claim 10, characterized in that: The engine (8) is connected to the fourth brake (C6). The fifth planetary gear set ring gear (P53) is connected to the fifth brake (C7); When the vehicle does not require the engine (8) to provide power during driving, the fourth brake (C6) is engaged to brake the rotation of the engine (8); After the rotational speed of the second motor (MG2) reaches a predetermined value, engage the fifth brake (C7) to reduce the rotational speed of the second motor (MG2).

12. A multi-planetary hybrid transmission configuration according to claim 10, characterized in that: In the first gear, the first clutch (C1) and the third brake (C5) are both engaged, and the second clutch (C2), the first brake (C3), and the second brake (C4) are all disengaged; A part of the power of the first planetary gear set (P1) is transmitted to the sun gear of the fourth planetary gear set (P41) through the first clutch (C1), the ring gear of the fourth planetary gear set (P43) is braked, and the power is transferred to the planet carrier of the fourth planetary gear set (P42); Another part of the power of the first planetary gear set (P1) is transmitted to the sun gear of the second planetary gear set (P21) through the second clutch (C2), and the power is transferred to the planet carrier of the fourth planetary gear set (P42) through the planet carrier of the second planetary gear set (P22), the sun gear of the third planetary gear set (P31), and the ring gear of the third planetary gear set (P33). The two parts of power are combined and output; When the second motor (MG2) is started as required, the fifth brake (C7) is engaged, the ring gear of the fifth planetary gear set (P53) is braked, and the power of the second motor (MG2) is output together with the power of the planet carrier of the fifth planetary gear set (P52) and the planet carrier of the fourth planetary gear set (P42); The output power of the first planetary gear set (P1) is in the same direction as the output power of the planet carrier of the fourth planetary gear set (P42).

13. A multi-planetary-gear hybrid transmission configuration according to claim 10, characterized in that: In the second gear, the first clutch (C1) and the second brake (C4) are both engaged, and the second clutch (C2), the first brake (C3), and the third brake (C5) are all disengaged; The power of the first planetary gear set (P1) is transmitted to the sun gear of the fourth planetary gear set (P41) and the sun gear of the second planetary gear set (P21) through the first clutch (C1) and the second clutch (C2) respectively. The sun gear of the fourth planetary gear set (P41) transfers the power to the planet carrier of the fourth planetary gear set (P42) for output, and the second planetary gear set (P2) idles; When the second motor (MG2) is started as required, the fifth brake (C7) is engaged, the ring gear of the fifth planetary gear set (P53) is braked, and the power of the second motor (MG2) is output together with the power of the planet carrier of the fifth planetary gear set (P52) and the planet carrier of the fourth planetary gear set (P42); The output power of the first planetary gear set (P1) is in the same direction as the output power of the planet carrier of the fourth planetary gear set (P42).

14. A multi-planetary hybrid transmission configuration according to claim 10, characterized in that: In the third gear, the first clutch (C1) and the first brake (C3) are both engaged, and the second clutch (C2), the second brake (C4), and the third brake (C5) are all disengaged; A part of the power of the first planetary gear set (P1) is transmitted to the sun gear of the fourth planetary gear set (P41) through the first clutch (C1), and the power is transferred to the planet carrier of the fourth planetary gear set (P42); Another part of the power of the first planetary gear set (P1) is transmitted to the sun gear (P21) of the second planetary gear set through the second clutch (C2). The ring gear (P23) of the second planetary gear set is braked, and the power is transferred to the carrier (P42) of the fourth planetary gear set through the carrier (P22) of the second planetary gear set, the sun gear (P31) of the third planetary gear set, and the ring gear (P33) of the third planetary gear set. The two parts of power are merged and output. When the second motor (MG2) is started as required, the fifth brake (C7) engages, the ring gear (P53) of the fifth planetary gear set is braked, and the power of the second motor (MG2) is output together with the power of the carrier (P52) of the fifth planetary gear set and the carrier (P42) of the fourth planetary gear set. The output power of the first planetary gear set (P1) is in the same direction as the output power of the carrier (P42) of the fourth planetary gear set.

15. A multi-planetary-gear hybrid transmission configuration according to claim 10, characterized in that: In the fourth gear, the first clutch (C1) and the second clutch (C2) are both engaged, and the first brake (C3), the second brake (C4), and the third brake (C5) are all disengaged. The power of the first planetary gear set (P1) is respectively transmitted to the sun gear (P21) of the second planetary gear set, the carrier (P32) of the third planetary gear set, and the sun gear (P41) of the fourth planetary gear set. The power of the sun gear (P41) of the fourth planetary gear set is transmitted to the carrier (P42) of the fourth planetary gear set. The power of the sun gear (P21) of the second planetary gear set is transmitted to the carrier (P32) of the third planetary gear set through the carrier (P22) of the second planetary gear set and the sun gear (P31) of the third planetary gear set. The power of the carrier (P32) of the third planetary gear set is transmitted to the carrier (P42) of the fourth planetary gear set through the ring gear (P33) of the third planetary gear set and the ring gear (P43) of the fourth planetary gear set and then output together. When the second motor (MG2) is started as required, the fifth brake (C7) engages, the ring gear (P53) of the fifth planetary gear set is braked, and the power of the second motor (MG2) is output together with the power of the carrier (P52) of the fifth planetary gear set and the carrier (P42) of the fourth planetary gear set. The output power of the first planetary gear set (P1) is in the same direction as the output power of the carrier (P42) of the fourth planetary gear set.

16. A multi-planetary-gear hybrid transmission configuration according to claim 10, characterized in that: In the fifth gear, the second clutch (C2) and the first brake (C3) are both engaged, and the first clutch (C1), the second brake (C4), and the third brake (C5) are all disengaged. The power of the first planetary gear set (P1) is respectively transmitted to the sun gear (P21) of the second planetary gear set and the carrier (P32) of the third planetary gear set through the second clutch (C2). The ring gear (P23) of the second planetary gear set is braked. The power of the sun gear (P21) of the second planetary gear set is transmitted to the carrier (P32) of the third planetary gear set through the carrier (P22) of the second planetary gear set and the sun gear (P31) of the third planetary gear set. The carrier (P32) of the third planetary gear set transmits the converged power to the carrier (P42) of the fourth planetary gear set through the ring gear (P33) of the third planetary gear set for output. When the second motor (MG2) is started as required, the fifth brake (C7) engages, the ring gear (P53) of the fifth planetary gear set is braked, and the power of the second motor (MG2) is output together with the power of the carrier (P52) of the fifth planetary gear set and the carrier (P42) of the fourth planetary gear set; The output power of the first planetary gear set (P1) is in the same direction as the output power of the carrier (P42) of the fourth planetary gear set.

17. A multi-planetary hybrid transmission configuration according to claim 10, characterized in that: In the sixth gear, the second clutch (C2) and the second brake (C4) are both engaged, and the first clutch (C1), the first brake (C3) and the third brake (C5) are all disengaged; The power of the first planetary gear set (P1) is transmitted to the third planetary gear set (P3) and the second planetary gear set (P2) respectively through the second clutch (C2), and the second planetary gear set (P2) rotates idly; The sun gear (P31) of the third planetary gear set is braked, and the ring gear (P33) of the third planetary gear set transmits the power to the carrier (P42) of the fourth planetary gear set for output; When the second motor (MG2) is started as required, the fifth brake (C7) engages, the ring gear (P53) of the fifth planetary gear set is braked, and the power of the second motor (MG2) is output together with the power of the carrier (P52) of the fifth planetary gear set and the carrier (P42) of the fourth planetary gear set; The output power of the first planetary gear set (P1) is in the same direction as the output power of the carrier (P42) of the fourth planetary gear set.

18. A multi-planetary-gear hybrid transmission configuration according to claim 10, characterized in that: In the reverse gear, the first brake (C3) and the third brake (C5) are both engaged, and the first clutch (C1), the second clutch (C2) and the second brake (C4) are all disengaged; The power of the first planetary gear set (P1) is transmitted to the second planetary gear set (P2) through the second clutch (C2). The ring gears (P23) of the second planetary gear set and (P43) of the fourth planetary gear set are both braked. The carrier (P22) of the second planetary gear set transmits the power to the sun gear (P31) of the third planetary gear set, and the ring gear (P33) of the third planetary gear set transmits the power to the carrier (P42) of the fourth planetary gear set for output; When the second motor (MG2) is started as required, the fifth brake (C7) engages, the ring gear (P53) of the fifth planetary gear set is braked, and the power of the second motor (MG2) is output together with the power of the carrier (P52) of the fifth planetary gear set and the carrier (P42) of the fourth planetary gear set; The output power of the first planetary gear set (P1) is in the opposite direction to the output power of the carrier (P42) of the fourth planetary gear set.

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