CN209888638U

CN209888638U - Hybrid power drive system

Info

Publication number: CN209888638U
Application number: CN201821040836.4U
Authority: CN
Inventors: 杨勇; 尚阳; 赵江灵; 董泽庆; 祖国强; 苏倩汝
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2018-07-02
Filing date: 2018-07-02
Publication date: 2020-01-03
Anticipated expiration: 2028-07-02

Abstract

A hybrid power driving system comprises an engine, a first motor, a second motor, a planetary gear device, a clutch gear device and a first switch device, wherein the engine and the first motor are both connected with the planetary gear device; the planetary gear device comprises a first rotating element, a second rotating element and a third rotating element, wherein the first rotating element is connected with the first motor, and the second rotating element is connected with the engine; the clutch gear device comprises a first clutch, a second clutch, a clutch gear and an engaging element, wherein the clutch gear is connected to the first clutch, the clutch gear is connected to the output end, the second clutch is connected with the third rotating element, and the second clutch engages the third rotating element and the engaging element; the first switch device locks or unlocks the first rotating element; the second motor is arranged in parallel with the first motor, and the second motor is connected to the output end. The utility model discloses a hybrid drive system platformization is good.

Description

Hybrid power drive system

Technical Field

The utility model relates to a new forms of energy technical field, in particular to hybrid driving system.

Background

The transmissions on the market at present mainly comprise a step transmission and a continuously variable transmission. Step-variable transmissions are subdivided into manual and automatic. They most provide a limited number of discrete output-to-input speed ratios through different meshing arrangements of gear trains or planetary gear trains. The speed of the drive wheels between two adjacent speed ratios is adjusted by means of the speed variation of the internal combustion engine. Continuously variable transmissions, whether mechanical, hydraulic, or electromechanical, provide an infinite number of continuously selectable speed ratios over a range of speeds, and theoretically, the speed change of the drive wheels can be accomplished entirely through the transmission. In this way, the internal combustion engine can be operated in the optimum speed range as much as possible. Meanwhile, compared with a stepped transmission, the stepless transmission has the advantages of stable speed regulation, full utilization of the maximum power of an internal combustion engine and the like, so that the stepless transmission is a subject of research of engineers in various countries for many years.

In recent years, the emergence of motor hybrid technology has opened up a new approach for achieving complete matching of power between an internal combustion engine and a power wheel. Among the many designs of the powertrain, the most representative are the series hybrid system and the parallel hybrid system. In the motor series hybrid system, an internal combustion engine, a generator, a motor, a shafting and a driving wheel form a series power chain, and the power assembly has a very simple structure. Wherein the generator, motor combination can be considered as a transmission in the conventional sense. When used in combination with an energy storage device, such as a battery, capacitor, etc., the transmission may also function as an energy modulation device to accomplish independent speed and torque modulation.

The motor parallel system is provided with two parallel independent power chains. One is composed of a traditional mechanical speed changer, and the other is composed of a motor and a battery system. The mechanical transmission is responsible for adjusting the speed, and the motor and the battery system are responsible for adjusting the power or the torque. In order to fully develop the potential of the whole system, the mechanical transmission also needs to adopt a stepless speed change mode.

The serial hybrid system has the advantages of simple structure and flexible layout. However, all power passes through the generator and the motor, so the power requirement of the motor is high, the volume is large, and the weight is heavy. Meanwhile, the energy transmission process is electromechanical twice, and the conversion of the motor is realized, so that the efficiency of the whole system is low. In the parallel hybrid system, only part of power passes through the motor system, so the power requirement on the motor is relatively low, and the efficiency of the whole system is high. However, the system needs two sets of independent subsystems and is high in manufacturing cost. Typically only for weak mixing systems.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a hybrid drive system has multiple mode, and the platformization is good.

A hybrid power driving system comprises an engine, a first motor, a second motor, a planetary gear device, a clutch gear device and a first switch device, wherein the engine and the first motor are both connected with the planetary gear device; the planetary gear device comprises a first rotating element, a second rotating element and a third rotating element, wherein the first rotating element is connected with the first motor, and the second rotating element is connected with the engine; the clutch gear device comprises a first clutch, a second clutch, a clutch gear and an engaging element, wherein the clutch gear is connected to the first clutch, the clutch gear is connected to the output end, the second clutch is connected with the third rotating element, and the second clutch engages the third rotating element and the engaging element; the first switch device locks or unlocks the first rotating element; the second motor is arranged in parallel with the first motor, and the second motor is connected to the output end.

In an embodiment of the present invention, the hybrid driving system further includes a second switch device, and the second switch device locks or unlocks the third rotating element.

In an embodiment of the present invention, the first motor includes a first motor output shaft, the clutch gear device is disposed on the first motor output shaft, the first clutch is connected to the first motor output shaft, the clutch gear is sleeved on the first motor output shaft, and the engaging element is fixed to the first clutch and parallel to the clutch gear.

In an embodiment of the present invention, the first motor, the clutch gear device, the planetary gear device, and the engine are coaxially disposed.

In an embodiment of the present invention, the first rotating element is a sun gear, the second rotating element is a planet carrier, the third rotating element is a gear ring, the first switch device is a first brake or a one-way clutch, the second switch device is a second brake or a one-way clutch, and the clutch gear is a first gear;

the engine is provided with an engine output shaft, the first motor is provided with a first motor output shaft, the planet carrier is connected with the engine output shaft, the sun gear is connected with the first motor output shaft, and the first gear is sleeved on the first motor output shaft in an air mode;

when the first clutch works, the first gear is fixed on the output shaft of the first motor; the second clutch is operative to engage the ring gear with the engagement element;

the first brake or the one-way clutch brakes or unlocks the sun gear, and the second brake or the one-way clutch brakes or unlocks the gear ring;

the hybrid power driving system further comprises an intermediate shaft, a second gear is arranged on the intermediate shaft, and the second gear is meshed with the first gear;

the second motor is provided with a second motor output shaft, a third gear is arranged on the second motor output shaft, and the third gear is meshed with the second gear.

The utility model discloses an in the embodiment, above-mentioned hybrid drive system still includes differential mechanism, be equipped with the differential mechanism gear on the differential mechanism, still be equipped with the fourth gear on the jackshaft, the fourth gear with differential mechanism gear intermeshing. The utility model discloses an in the embodiment, above-mentioned hybrid drive system has one-level pure electric mode, second grade pure electric mode, increases journey mode, one-level engine and directly drives the mode, the second grade engine directly drives the mode, tertiary engine directly drives the mode, the mode is thoughtlessly moved to one-level, the mode is thoughtlessly moved to second grade, tertiary thoughtlessly moves mode, level four thoughtlessly moves mode and parking power generation mode.

In an embodiment of the present invention, in the first-stage pure electric mode, the first clutch, the second clutch, the engine and the first motor do not work, and the second motor drives; in the second-stage pure electric mode, the first clutch works to fix the first gear on the output shaft of the first motor, the engine and the second clutch do not work, and the first motor and the second motor are both driven.

The utility model discloses an in the embodiment under the range extending mode, first clutch with the second clutch is out of work, second stopper or one way clutch braking the ring gear, engine drive first motor generates electricity, first motor does the second motor provides the electric energy, the second motor drives.

In an embodiment of the present invention, in the first-stage engine direct drive mode, the first clutch operates to fix the first gear to the first motor output shaft, the second clutch operates to engage the gear ring with the engagement element, the engine drives, and neither the first motor nor the second motor operates; in the two-stage engine direct drive mode, the first clutch is not operated, the second clutch is operated, the second clutch enables the gear ring to be connected with the connecting element, the first brake or the one-way clutch brakes the sun gear, the engine is driven, and the first motor and the second motor are not operated; in the three-stage engine direct-drive mode, the first clutch works, the first clutch enables the first gear to be fixed on the first motor output shaft, the second clutch does not work, the brake or the one-way clutch brakes the gear ring, the engine drives, and the first motor and the second motor do not work.

In an embodiment of the present invention, in the first hybrid mode, the first clutch is not operated, the second clutch is operated, the second clutch engages the ring gear with the engagement element, the engine drives the planet carrier to rotate, the first motor drives the sun gear to rotate, the engine and the first motor are steplessly coupled through the planetary gear device, and the second motor drives the sun gear to rotate; in the two-stage hybrid mode, the first clutch is operated, the first clutch fixes the first gear to the first motor output shaft, the second clutch is operated, the second clutch engages the ring gear with the engagement element, and the engine, the first motor, and the second motor are all driven; in the three-stage hybrid mode, the first clutch is not operated, the second clutch is operated, the second clutch engages the ring gear with the engagement element, the first brake or one-way clutch brakes the sun gear, and the engine, the first motor, and the second motor are all driven; in the four-stage hybrid mode, the first clutch works to fix the first gear on the first motor output shaft, the second clutch does not work, the second brake or the one-way clutch brakes the gear ring, and the engine, the first motor and the second motor are driven.

The embodiment of the utility model provides an in under the parking electricity generation mode, first clutch the second clutch the engine with first motor is all not worked, and power is transmitted by the wheel end the second motor generates electricity.

In an embodiment of the present invention, the first rotating element is a sun gear, the second rotating element is a gear ring, the third rotating element is a planet carrier, the first light-emitting device is a first brake or a one-way clutch, and the second light-emitting device is a second brake or a one-way clutch.

In an embodiment of the present invention, the first rotating element is a planet carrier, the second rotating element is one of a sun gear and a gear ring, the third rotating element is the other of the sun gear and the gear ring, the first light-emitting device is a first brake or a one-way clutch, and the second light-emitting device is a second brake or a one-way clutch.

In an embodiment of the present invention, the first rotating element is a gear ring, the second rotating element is one of a sun gear and a planet carrier, the third rotating element is the other of the sun gear and the planet carrier, the first light-emitting device is a first brake or a one-way clutch, and the second light-emitting device is a second brake or a one-way clutch.

The utility model also provides a hybrid power driving system, include:

the clutch device comprises an engine, a first motor, a second motor, a planetary gear device, a clutch gear device, a joint device, a first switch device and a second switch device, wherein the engine and the first motor are both connected with the planetary gear device, and the clutch gear device is arranged between the first motor and the planetary gear device;

the planetary gear device includes a first rotating element connected with the first motor, a second rotating element connected with the engine, and a third rotating element connected with the engagement device;

the clutch gear device comprises a clutch, a clutch gear connected to the clutch and an engagement element, wherein the clutch gear is connected to the output end;

the engagement device engages the third rotating element with the engagement element, or engages the third rotating element with the switch device, or engages only the third rotating element;

the first switch device locks or unlocks the first rotating element, and the second switch device locks or unlocks the third rotating element;

the second motor and the first motor are arranged in parallel, and the second motor is connected to an output end.

The engine and the first motor of the hybrid power driving system of the utility model are both connected with the planetary gear device, and the clutch gear device is arranged between the first motor and the planetary gear device; the planetary gear device comprises a first rotating element, a second rotating element and a third rotating element, wherein the first rotating element is connected with the first motor, and the second rotating element is connected with the engine; the clutch gear device comprises a first clutch, a second clutch, a clutch gear and an engaging element, wherein the clutch gear is connected to the first clutch, the clutch gear is connected to the output end, the second clutch is connected with the third rotating element, and the second clutch engages the third rotating element and the engaging element; the first switch device locks or unlocks the first rotating element; the second motor is arranged in parallel with the first motor, and the second motor is connected to the output end. The utility model discloses a hybrid drive system can be in one-level pure electric mode, the pure electric mode of second grade, increase journey mode, one-level engine and directly drive mode, second grade engine and directly drive mode, tertiary engine and directly drive mode, one-level and thoughtlessly move mode, second grade and thoughtlessly move mode, tertiary and thoughtlessly move mode, level four and thoughtlessly move mode and parking power generation mode down and work, have stronger flexibility. And the engine is connected with the first motor through the planetary gear device, so that the speed ratio is adjustable, the speed ratio range is large, and the size of the first motor can be effectively reduced. Furthermore, the utility model discloses a hybrid drive system is when carrying out the mode switch, and the drive is participated in to the second motor, and there is not the problem of interrupt in power. Still, the utility model discloses a hybrid drive system can cover HEV motorcycle type and PHEV motorcycle type, and the platformization is good.

Drawings

Fig. 1 is a schematic structural diagram of a hybrid drive system according to a first embodiment of the present invention.

Fig. 2 is a power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the one-level electric only mode.

Fig. 3 is a schematic power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the two-stage electric only mode.

Fig. 4 is a power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the range extending mode.

Fig. 5 is a schematic power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the one-stage engine direct drive mode.

Fig. 6 is a schematic power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the two-stage engine direct drive mode.

Fig. 7 is a schematic power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the three-stage engine direct drive mode.

Fig. 8 is a power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the one-stage hybrid mode.

Fig. 9 is a power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the two-stage hybrid mode.

Fig. 10 is a power transmission diagram of the hybrid drive system of the first embodiment of the present invention in the three-stage hybrid mode.

Fig. 11 is a power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the four-stage hybrid mode.

Fig. 12 is a power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the parking power generation mode.

Fig. 13 is a schematic structural view of a hybrid drive system according to a sixth embodiment of the present invention.

Fig. 14 is a schematic structural view of a hybrid drive system according to a seventh embodiment of the present invention.

Fig. 15 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a one-level electric only mode.

Fig. 16 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a two-stage electric only mode.

Fig. 17 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in the range extended mode.

Fig. 18 is a schematic power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in the one-stage engine direct drive mode.

Fig. 19 is a schematic power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in the two-stage engine direct drive mode.

Fig. 20 is a schematic power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a direct drive mode of a three-stage engine.

Fig. 21 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a one-stage hybrid mode.

Fig. 22 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in the two-stage hybrid mode.

Fig. 23 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a three-stage hybrid mode.

Fig. 24 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a four-stage hybrid mode.

Fig. 25 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a parking power generation mode.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.

First embodiment

Fig. 1 is a schematic structural diagram of a hybrid drive system according to a first embodiment of the present invention. As shown in fig. 1, the hybrid drive system 10 includes an engine 11, a planetary gear device 12, a first electric motor 13, a first switching device, a second switching device, an intermediate shaft 17, a second electric motor 18, a differential 19, and a power battery (not shown).

The engine 11 has an engine output shaft 112. In the present embodiment, the engine 11 is, for example, a gasoline engine or a diesel engine.

The planetary gear device 12 includes a first rotating element, a second rotating element, and a third rotating element. The first rotating element is connected to the first motor 13, and the second rotating element is connected to the engine 11. In the present embodiment, the first rotating element 122 is, for example, a sun gear 122, the second rotating element is, for example, a planet carrier 124, and the third rotating element is, for example, a ring gear 123. The planet carrier 124 is provided with planet wheels 125, and the planet wheels 125 are connected to the planet carrier 124 through rolling or sliding bearings; the carrier 124 is connected to the engine output shaft 112. The sun gear 122 is disposed within the ring gear 123, and the sun gear 122 is meshed with the planet gears 125 and the ring gear 123, respectively.

The first motor 13 has a first motor output shaft 132, the first motor output shaft 132 is connected to the sun gear 122, and a first gear 133 is sleeved on the first motor output shaft 132. The first gear 133 is freely sleeved on the first motor output shaft 132, i.e. the first motor output shaft 132 and the first gear 133 are not affected by each other when rotating respectively. The first motor 13 is disposed coaxially with the engine 11, i.e., the first motor output shaft 132 of the first motor 13 is coaxial with the engine output shaft 112 of the engine 11. In the present embodiment, the first motor 13 is a driving and power generating integrated machine.

The clutch gear device is provided coaxially with the first motor 13, the planetary gear device 12, and the engine 11. The clutch gear device includes a first clutch 14, a second clutch 18, and a clutch gear connected to the first clutch 14 and the engagement element, the clutch gear being connected to the output terminal. The clutch gear device is arranged on the first motor output shaft 132, the first clutch 14 is connected with the first motor output shaft 132, the clutch gear is sleeved on the first motor output shaft 132 in a hollow mode, the engaging element is fixed on the first clutch 14 and is parallel to the clutch gear, and the clutch gear and the engaging element can rotate synchronously. The second clutch 16 is connected to the third rotating element, and the second clutch 16 is used to engage the third rotating element with the engaging element; in the present embodiment, the clutch gear is, for example, the first gear 133. The first clutch 14 is used to fix the first gear 133 on the first motor output shaft 132, for example, when the first clutch 14 is operated, the first clutch 14 fixes the first gear 133 on the first motor output shaft 132, the first gear 133 can rotate synchronously with the first motor output shaft 132, and when the first clutch 14 is not operated, the first gear 133 is idle on the first motor output shaft 132. The second clutch 16 is used to engage the ring gear 123 with the engaging element, and for example, when the second clutch 16 is operated, the second clutch 16 engages the ring gear 123 with the engaging element, and when the second clutch 16 is not operated, the second clutch 16 disengages the ring gear 123 from the engaging element.

The first switching device is used to lock or unlock the sun gear 122 (first rotating element), and the second switching device is used to lock or unlock the ring gear 123 (third rotating element). In the present embodiment, the first switching device is, for example, a first brake 15a or a one-way clutch, and the first brake 15a or the one-way clutch is used for braking or unlocking the sun gear 122; the second switching device is, for example, a second brake 15b or a one-way clutch, and the brake 15 or the one-way clutch is used to brake or unlock the ring gear 123. In the present embodiment, when the first brake 15a or the one-way clutch is operated, the first brake 15a or the one-way clutch brakes the sun gear 122; when the first brake 15a or the one-way clutch is not operated, the first brake 15a or the one-way clutch unlocks the sun gear 122; when the second brake 15b or the one-way clutch is operated, the second brake 15b or the one-way clutch brakes the ring gear 123; when the second brake 15b or the one-way clutch is not operated, the second brake 15b or the one-way clutch unlocks the ring gear 123.

The intermediate shaft 17 is provided with a second gear 172 and a fourth gear 173, the second gear 172 and the fourth gear 173 are arranged at intervals, and the second gear 172 is meshed with the first gear 133.

The second motor 18 is arranged in parallel with the first motor 13, and the second motor 18 is connected to the output terminal. Specifically, the second motor 18 has a second motor output shaft 182, a third gear 183 is disposed on the second motor output shaft 182, and the third gear 183 is engaged with the second gear 172. In this embodiment, the second motor 18 is an integrated drive and generator.

A differential gear 192 is provided on the differential 19, and the differential gear 192 and the fourth gear 173 are meshed with each other. In this embodiment, the differential 19 is used to adjust the difference between the rotation speeds of the left and right wheels, so that the left and right wheels roll at different rotation speeds when the vehicle is turning or running on an uneven road surface, thereby ensuring that the wheels are driven by both sides to perform pure rolling motion.

The power battery is electrically connected with the first motor 13 and the second motor 18 respectively. The power battery supplies electric power for driving the first motor 13 and the second motor 18, and electric power generated by rotation of the first motor 13 and the second motor 18 may be stored in the power battery. In the present embodiment, the engine 11 drives the first electric machine 13 to rotate through the planet carrier 124 and the sun gear 122 to generate electric energy, and the electric energy can be stored in the power battery; when the automobile brakes, power is transmitted from the wheel end to the second electric machine 18 through the differential 19, the differential gear 192, the fourth gear 173, the second gear 172 and the third gear 183, and the second electric machine 18 is driven to rotate to generate electric energy, and the electric energy can be stored in a power battery.

The utility model discloses a hybrid drive system 10 has the pure electronic mode of one-level, the pure electronic mode of second grade, increases journey mode, one-level engine and directly drives mode, second grade engine and directly drives mode, tertiary engine and directly drives mode, one-level and thoughtlessly move mode, second grade and thoughtlessly move mode, tertiary mode, level four and thoughtlessly move mode and parking power generation mode.

Fig. 2 is a power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the one-level electric only mode. As shown in fig. 2, the power transmission direction is as indicated by the arrow in the figure, and in the one-stage electric only mode, the first clutch 14, the second clutch 16, the engine 11, and the first electric machine 13 are not operated, and the second electric machine 18 is driven. In this embodiment, the power transmission has a path from the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in a first-order electric-only mode when the vehicle is running at a medium-low speed.

Fig. 3 is a schematic power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the two-stage electric only mode. As shown in fig. 3, in the two-stage electric only mode, the first clutch 14 is operated, the first gear 133 is fixed to the first motor output shaft 132 by the first clutch 14, the second clutch 16 is not operated, and both the first motor 13 and the second motor 18 are driven, as indicated by the arrow in the drawing. In the present embodiment, the power transmission has two paths, wherein the first path is transmitted from the first motor 13 to the intermediate shaft 17 through the first gear 133, then to the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end; path two is transmitted by the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in the two-stage electric-only mode when the vehicle is traveling at high speeds.

Fig. 4 is a power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the range extending mode. As shown in fig. 4, the power transmission direction is as indicated by the arrow in the figure, in the range extending mode, the first clutch 14 and the second clutch 16 are not operated, the second brake 15b or the one-way clutch brakes the ring gear 123, the engine 11 drives the first motor 13 to generate power, the first motor 13 supplies power to the second motor 18, and the second motor 18 drives. The engine 11 drives the planetary carrier 124 to transmit power to the sun gear 122 and then to the first motor 13, so that the first motor 13 rotates to generate power, and the electric energy generated by the first motor 13 is stored in the power battery and is provided for driving the second motor 18 by the power battery. In this embodiment, the power transmission has a path from the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end.

Fig. 5 is a schematic power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the one-stage engine direct drive mode. As shown in fig. 5, the power transmission direction is as indicated by the arrow in the figure, and in the one-stage engine direct drive mode, the first clutch 14 is operated, the first clutch 14 fixes the first gear 133 to the first motor output shaft 132, the second clutch 16 is operated, the second clutch 16 engages the ring gear 123 with the engaging element, the engine 11 is driven, and neither the first motor 13 nor the second motor 18 is operated. In the present embodiment, the power transmission has a path, the engine 11 drives the entire planetary row 12 to rotate, the speed ratio of the entire planetary row 12 is 1, the rotation speeds of the sun gear 122, the planet carrier 124 and the ring gear 123 are the same, and the power is transmitted from the first gear 133 to the intermediate shaft 17, then to the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in the first-stage engine direct drive mode when the vehicle is running at a medium-low speed.

Fig. 6 is a schematic power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the two-stage engine direct drive mode. As shown in fig. 6, the power transmission direction is as indicated by the arrow in the figure, and in the two-stage engine direct drive mode, the first clutch 14 is not operated, the second clutch 16 is operated, the ring gear 123 of the second clutch 16 is engaged with the engaging element, the first brake 15a or the one-way clutch brakes the sun gear 122, the engine 11 is driven, and neither the first electric machine 13 nor the second electric machine 18 is operated. In this embodiment, the power transmission has a path, and the engine 11 drives the carrier 124 to transmit power to the ring gear 123, and then to the intermediate shaft 17 via the first gear 133, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in the secondary engine direct drive mode when the vehicle is running at a medium speed.

Fig. 7 is a schematic power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the three-stage engine direct drive mode. As shown in fig. 7, the power transmission direction is as indicated by the arrow in the figure, in the three-stage engine direct drive mode, the first clutch 14 is operated, the first gear 133 is fixed to the first motor output shaft 132 by the first clutch 14, the second clutch 16 is not operated, the second brake 15b or the one-way clutch brakes the ring gear 123, the engine 11 is driven, and neither the first motor 13 nor the second motor 18 is operated. In this embodiment, the power transmission has a path, and the engine 11 drives the planet carrier 124 to transmit power to the sun gear 122, the first gear 133 to the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in the secondary engine direct drive mode when the vehicle is traveling at medium to high speeds.

Fig. 8 is a power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the one-stage hybrid mode. As shown in fig. 8, in the power transmission direction, as indicated by the arrow direction in the drawing, in the one-stage hybrid mode, the first clutch 14 is not operated, the second clutch 16 is operated, the second clutch 16 engages the ring gear 123 with the engagement element, the engine 11 drives the carrier 124 to rotate, the first motor 13 drives the sun gear 122 to rotate, the engine 11 and the first motor 13 are steplessly coupled via the planetary gear device 12, and the second motor 18 is driven. In the embodiment, the power transmission has two paths, wherein in the first path, the power of the engine 11 is transmitted through the planet carrier 124, the power of the first motor 13 is transmitted through the sun gear 122, the power of the engine 11 and the first motor 13 is steplessly coupled through the planet row 12, is output through the ring gear 123, is transmitted to the first gear 133 and the intermediate shaft 17, is transmitted to the fourth gear 173, the differential gear 192 and the differential 19, and finally reaches the wheel end; path two is transmitted by the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It should be noted that when the hybrid drive system 10 is driven in the first-order hybrid mode, the system is in an ecvt (electronic controlled variable transmission) stepless speed regulation mode, the operating point of the engine 11 can be adjusted by the first electric machine 13 and the second electric machine 18, and is decoupled from the wheel-end output torque, so that the engine 11 is always operated in a high-efficiency region, and the system can ensure the dynamic property and the economical efficiency, so that the system can be developed for medium-high-class vehicles. The hybrid drive system 10 may be driven in a first engine direct drive mode when the vehicle is running at full speed.

Fig. 9 is a power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the two-stage hybrid mode. As shown in fig. 9, in the two-stage hybrid mode, the first clutch 14 is operated, the first gear 133 is fixed to the first motor output shaft 132 by the first clutch 14, the second clutch 16 is operated, the ring gear 123 is engaged with the engagement element by the second clutch 16, and the engine 11, the first motor 13, and the second motor 18 are all driven, as indicated by arrows in the drawing. In the embodiment, the power transmission has two paths, wherein in the first path, the power of the engine 11 is transmitted through the planet carrier 124, the first motor 13 is transmitted through the sun gear 122, at this time, the rotation speeds of the sun gear 122, the planet carrier 124 and the ring gear 123 of the planetary gear device 12 are the same, the speed ratio of the whole planetary gear row 12 is 1, the power is transmitted through the first gear 133, the intermediate shaft 17, the fourth gear 173, the differential gear 192 and the differential 19, and finally to the wheel end; path two is transmitted by the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in the secondary engine direct drive mode when the vehicle is running at medium or low speed.

Fig. 10 is a power transmission diagram of the hybrid drive system of the first embodiment of the present invention in the three-stage hybrid mode. As shown in fig. 10, the power transmission direction is as indicated by the arrow direction in the drawing, in the three-stage hybrid mode, the first clutch 14 is not operated, the second clutch 16 is operated, the second clutch 16 engages the ring gear 123 with the engagement element, and the first brake 15a or the one-way clutch brakes the sun gear 122, the engine 11, and the second motor 18 for driving. In the embodiment, the power transmission has two paths, wherein in the first path, the engine 11 drives the planet carrier 124 to transmit power to the ring gear 123, and the power is transmitted to the intermediate shaft 17 through the first gear 133, then to the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end; path two is transmitted by the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end.

Fig. 11 is a power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the four-stage hybrid mode. As shown in fig. 11, in the four-stage hybrid mode, the power transmission direction is as indicated by the arrow in the drawing, the first clutch 14 is operated, the first gear 133 is fixed to the first motor output shaft 132 by the first clutch 14, the second clutch 16 is not operated, the second brake 15b or the one-way clutch brakes the ring gear 123, and the engine 11, the first motor 13, and the second motor 18 are driven. In the embodiment, the power transmission has two paths, wherein in the first path, the engine 11 drives the planet carrier 124 to transmit power to the sun gear 122, the first motor 13 also transmits power to the sun gear 122, and after coupling, the power is transmitted to the wheel end through the first gear 133, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19 and the like; path two is transmitted by the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 may be driven in a four-stage hybrid mode when the vehicle is traveling at medium to high speeds.

Fig. 12 is a power transmission diagram of the hybrid drive system according to the first embodiment of the present invention in the parking power generation mode. As shown in fig. 12, the power transmission direction is as indicated by the arrow in the drawing, and in the parking power generation mode, the first clutch 14, the second clutch 16, the engine 11, and the first motor 13 are not operated, and power is transmitted from the wheel end to the second motor 18 to generate power. In the embodiment, the power transmission has a path, and the power is transmitted to the second electric machine 18 from the wheel end through the differential 19, the differential gear 192, the fourth gear 173, the second gear 172 and the third gear 183, so as to drive the second electric machine 18 to rotate to generate electric energy.

The utility model discloses a hybrid drive system 10 has the pure electronic mode of one-level, the pure electronic mode of second grade, increases journey mode, one-level engine and directly drives the mode, the second grade engine directly drives the mode, tertiary engine directly drives the mode, the one-level mixes moves the mode, the second grade mixes moves the mode, the tertiary mode that mixes, the level four mixes moves the mode and parking power generation mode, can realize the switching of different modes according to power battery's SOC (residual capacity) value and the automatic switching of speed of a motor vehicle demand. For example, judging the magnitude relation between the SOC value of the power battery and a first threshold value, or simultaneously judging the magnitude relation between the SOC value of the power battery and the first threshold value and the magnitude relation between the vehicle speed and a second threshold value; the operation mode of the hybrid drive system 10 is switched according to the determination result. It should be noted that the first threshold is used to determine the SOC value of the power battery, and the second threshold is used to determine the vehicle speed, and the embodiment does not limit the value ranges of the first threshold and the second threshold, and may be freely set according to a specific control strategy, and the values of the first threshold and the second threshold are different under different control strategies. After the first threshold value and the second threshold value are set, automatic judgment is carried out, and automatic switching is carried out among various modes according to the judgment result.

The nine modes are embodied as the following table:

second embodiment

The hybrid drive system 10 of the present embodiment is substantially the same in structure as the hybrid drive system 10 of the first embodiment, and is different in the mounting positions of the first clutch 14 and the second clutch 16.

Specifically, the first clutch 14 and the second clutch 16 are disposed in the same housing, and the first clutch 14 and the second clutch 16 are disposed coaxially. Because the first clutch 14 and the second clutch 16 are integrated in one shell, the volume occupied by the independent arrangement of the first clutch 14 and the second clutch 16 can be greatly reduced, and a space is reserved for the arrangement of other elements of the engine. Third embodiment

The hybrid drive system 10 of the present embodiment is substantially identical in structure to the hybrid drive system 10 of the first embodiment, and is different in the connection relationship between the engine 11 and the planetary gear device 12 and the connection relationship between the clutch gear device and the planetary gear device 12.

Specifically, in the present embodiment, the first rotating element is a sun gear, the second rotating element is a ring gear, the third rotating element is a carrier, the first light-emitting device is a first brake 15a or a one-way clutch, the second light-emitting device is a second brake 15b or a one-way clutch, that is, the ring gear 123 is connected to the engine output shaft 112, and the second clutch 16 is fixed to the carrier 124. For the connection relationship and the driving method of the components of the hybrid drive system 10, refer to the first embodiment.

The hybrid power driving system 10 of the present embodiment has a first-stage pure electric mode, a second-stage pure electric mode, a range extending mode, a first-stage engine direct driving mode, a second-stage engine direct driving mode, a third-stage engine direct driving mode, a first-stage hybrid mode, a second-stage hybrid mode, a third-stage hybrid mode, a fourth-stage hybrid mode, and a parking power generation mode, and for the working state of the hybrid power driving system 10 in each mode, reference is made to the first embodiment, and details are not repeated here.

Fourth embodiment

Specifically, the first rotating element is a planet carrier, the second rotating element is one of a sun gear and a ring gear, the third rotating element is the other of the sun gear and the ring gear, the first light-opening device is a first brake 15a or a one-way clutch, and the second light-opening device is a second brake 15b or a one-way clutch. For the connection relationship and the driving method of the components of the hybrid drive system 10, refer to the first embodiment.

Fifth embodiment

Specifically, the first rotating element is a ring gear, the second rotating element is one of a sun gear and a planet carrier, the third rotating element is the other of the sun gear and the planet carrier, the first light-emitting device is a first brake 15a or a one-way clutch, and the second light-emitting device is a second brake 15b or a one-way clutch. For the connection relationship and the driving method of the components of the hybrid drive system 10, refer to the first embodiment.

Sixth embodiment

Fig. 13 is a schematic structural view of a hybrid drive system according to a sixth embodiment of the present invention. As shown in fig. 13, the hybrid drive system 10 of the present embodiment is substantially the same in structure as the hybrid drive system 10 of the first embodiment, except that the hybrid drive system 10 includes only a first switch device for locking or unlocking the sun gear 122 (first rotating element).

Seventh embodiment

Fig. 14 is a schematic structural view of a hybrid drive system according to a seventh embodiment of the present invention. As shown in fig. 14, the hybrid drive system 10 includes an engine 11, a planetary gear device 12, a first electric machine 13, a clutch gear device, a first switching device, a second switching device, an engagement device, an intermediate shaft 17, a second electric machine 18, a differential 19, and a power battery (not shown).

The planetary gear device 12 includes a first rotating element, a second rotating element, and a third rotating element. The first rotational element is connected to the first electric machine 13, the second rotational element is connected to the engine 11, and the third rotational element is connected to the engagement device 16. In the present embodiment, the first rotating element 122 is, for example, a sun gear 122, the second rotating element is, for example, a planet carrier 124, and the third rotating element is, for example, a ring gear 123. The planet carrier 124 is provided with planet wheels 125, and the planet wheels 125 are connected to the planet carrier 124 through rolling or sliding bearings; the carrier 124 is connected to the engine output shaft 112. The sun gear 122 is disposed within the ring gear 123, and the sun gear 122 is meshed with the planet gears 125 and the ring gear 123, respectively.

The clutch gear device is provided coaxially with the first motor 13, the planetary gear device 12, and the engine 11. The clutch gear device includes a clutch 14, and a clutch gear connected to the output end and the engaging element connected to the clutch 14. The clutch gear device is arranged on the first motor output shaft 132, the clutch 14 is connected with the first motor output shaft 132, the clutch gear is sleeved on the first motor output shaft 132 in a hollow mode, the engaging element is fixed on the clutch 14 and is parallel to the clutch gear, and the clutch gear and the engaging element can rotate synchronously. In the present embodiment, the clutch gear is, for example, the first gear 133. When the clutch 14 is in operation, the clutch 14 fixes the first gear 133 (clutch gear) on the first motor output shaft 132, the first gear 133 can rotate synchronously with the first motor output shaft 132, and when the clutch 14 is not in operation, the first gear 133 (clutch gear) is freely sleeved on the first motor output shaft 132.

The first switching device is used to lock or unlock the sun gear 122 (first rotating element), and the second switching device is used to lock or unlock the ring gear 123 (third rotating element). In the present embodiment, the first switching device is, for example, a first brake 15a or a one-way clutch, and the first brake 15a or the one-way clutch is used for braking or unlocking the sun gear 122; the second switching device is, for example, a second brake 15b or a one-way clutch, and the second brake 15b is used to brake or unlock the ring gear 123. When the first brake 15a or the one-way clutch is operated, the first brake 15a or the one-way clutch brakes the sun gear 122; when the first brake 15a or the one-way clutch is not operated, the first brake 15a or the one-way clutch unlocks the sun gear 122; when the second brake 15b or the one-way clutch is operated, the second brake 15b or the one-way clutch brakes the ring gear 123; when the second brake 15b or the one-way clutch is not operated, the second brake 15b or the one-way clutch unlocks the ring gear 123.

The engaging means engages the third rotating element with the engaging element, or engages the third rotating element with the second switching means, or engages only the third rotating element. In particular, the engagement means comprise a first operating position, in which they engage and fix the third rotary element with the engagement element, a second operating position, in which they engage only the third rotary element, and a third operating position, in which they engage and fix the third rotary element with the second switching means. In the present embodiment, the engaging device is, for example, a synchronizer 16, and the synchronizer 16 includes a left station, a middle station and a right station, wherein the left station is a first working position of the engaging device, the middle station is a second working position of the engaging device, and the right station is a third working position of the engaging device. The synchronizer 16 is fixed to the ring gear 123, and the ring gear 123 is engaged with the engaging element when the synchronizer 16 is in the left station; when the synchronizer 16 is in the right work position, the second brake 15b brakes the gear ring 123; in the synchronizer 16 in the neutral position, the ring gear 123 is disengaged from the engaging element, and the second brake 15b or the one-way clutch unlocks the ring gear 123.

Fig. 15 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a one-level electric only mode. As shown in fig. 15, the power transmission direction is as indicated by the arrow in the figure, and in the one-stage electric only mode, the clutch 14 is not operated, the synchronizer 16 is in the intermediate position, the engine 11 and the first electric motor 13 are not operated, and the second electric motor 18 is driven. In this embodiment, the power transmission has a path from the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in a first-order electric-only mode when the vehicle is running at a medium-low speed.

Fig. 16 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a two-stage electric only mode. As shown in fig. 16, the power transmission direction is as indicated by the arrow in the figure, and in the two-stage electric only mode, the clutch 14 is operated, the clutch 14 fixes the first gear 133 to the first motor output shaft 132, the synchronizer 16 is in the intermediate position, and both the first motor 13 and the second motor 18 are driven. In the present embodiment, the power transmission has two paths, wherein the first path is transmitted from the first motor 13 to the intermediate shaft 17 through the first gear 133, then to the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end; path two is transmitted by the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in the two-stage electric-only mode when the vehicle is traveling at high speeds.

Fig. 17 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in the range extended mode. As shown in fig. 17, the power transmission direction is as shown by the arrow direction in the figure, in the range extending mode, the synchronizer 16 is at the right position, the second brake 15b or the one-way clutch brakes the gear ring 123, the engine 11 drives the first motor 13 to generate power, the first motor 13 provides power for the second motor 18, and the second motor 18 drives. The engine 11 drives the planetary carrier 124 to transmit power to the sun gear 122 and then to the first motor 13, so that the first motor 13 rotates to generate power, and the electric energy generated by the first motor 13 is stored in the power battery and is provided for driving the second motor 18 by the power battery. In this embodiment, the power transmission has a path from the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end.

Fig. 18 is a schematic power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in the one-stage engine direct drive mode. As shown in fig. 18, the power transmission direction is as indicated by the arrow in the drawing, in the one-stage engine direct drive mode, the clutch 14 is operated, the clutch 14 fixes the first gear 133 to the first motor output shaft 132, the synchronizer 16 is in the left position, the ring gear 123 is engaged with the engaging element, the engine 11 is driven, and neither the first motor 13 nor the second motor 18 is operated. In the present embodiment, the power transmission has a path, the engine 11 drives the whole planetary gear device 12 to rotate, the speed ratio of the whole planetary gear device 12 is 1, the rotation speeds of the sun gear 122, the planet carrier 124 and the ring gear 123 are the same, the power is transmitted to the intermediate shaft 17 from the first gear 133, then to the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in the first-stage engine direct drive mode when the vehicle is running at a medium-low speed.

Fig. 19 is a schematic power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in the two-stage engine direct drive mode. As shown in fig. 19, the power transmission direction is as indicated by the arrow in the drawing, in the one-stage engine direct drive mode, the clutch 14 is not operated, the synchronizer 16 is in the left position, the ring gear 123 is engaged with the engaging element, the first brake 15a or the one-way clutch brakes the sun gear 122, the engine 11 is driven, and the first motor 13 and the second motor 18 are not operated. In this embodiment, the power transmission has a path, and the engine 11 drives the carrier 124 to transmit power to the ring gear 123, and then to the intermediate shaft 17 via the first gear 133, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in the secondary engine direct drive mode when the vehicle is running at medium or low speed.

Fig. 20 is a schematic power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a direct drive mode of a three-stage engine. As shown in fig. 20, the power transmission direction is as shown by the arrow direction in the figure, in the two-stage engine direct drive mode, the clutch 14 is operated, the clutch 14 fixes the first gear 133 on the first motor output shaft 132, the synchronizer 16 is in the right position, the second brake 15b or the one-way clutch brakes the ring gear 123, the engine 11 is driven, and neither the first motor 13 nor the second motor 18 is operated. In this embodiment, the power transmission has a path, and the engine 11 drives the planet carrier 124 to transmit power to the sun gear 122, the first gear 133 to the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in the secondary engine direct drive mode when the vehicle is traveling at medium to high speeds.

Fig. 21 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a one-stage hybrid mode. As shown in fig. 21, the power transmission direction is as indicated by the arrow in the drawing, in the one-stage hybrid mode, the clutch 14 is not operated, the synchronizer 16 is in the left position, the ring gear 123 is engaged with the engagement element, the engine 11 drives the carrier 124 to rotate, the first motor 13 drives the sun gear 122 to rotate, the engine 11 and the first motor 13 are steplessly coupled through the planetary gear device 12, and the second motor 18 is driven. In the embodiment, the power transmission has two paths, wherein in the first path, the power of the engine 11 is transmitted through the planet carrier 124, the power of the first motor 13 is transmitted through the sun gear 122, the power of the engine 11 and the first motor 13 is steplessly coupled through the planet row 12, is output through the ring gear 123, is transmitted to the first gear 133 and the intermediate shaft 17, is transmitted to the fourth gear 173, the differential gear 192 and the differential 19, and finally reaches the wheel end; path two is transmitted by the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It should be noted that when the hybrid drive system 10 is driven in the first-order hybrid mode, the system is in the ecvt (electronically controlled variable transmission) stepless speed regulation mode, the operating point of the engine 11 can be adjusted by the first electric machine 13 and the second electric machine 18, and is decoupled from the wheel-end output torque, so that the engine 11 is always operated in a high-efficiency region, and the system can ensure the dynamic property and the economical efficiency, so that the system can be developed for medium-high-class vehicles. The hybrid drive system 10 may be driven in a first engine direct drive mode when the vehicle is running at full speed.

Fig. 22 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in the two-stage hybrid mode. As shown in fig. 22, the power transmission direction is as indicated by the arrow in the drawing, and in the two-stage hybrid mode, the clutch 14 is operated, the clutch 14 fixes the first gear 133 to the first motor output shaft 132, the synchronizer 16 is in the left position, the ring gear 123 is engaged with the engaging element, and the engine 11, the first motor 13, and the second motor 18 are all driven. In the embodiment, the power transmission has two paths, wherein in the first path, the power of the engine 11 is transmitted through the planet carrier 124, the first motor 13 is transmitted through the sun gear 122, at this time, the rotation speeds of the sun gear 122, the planet carrier 124 and the ring gear 123 of the planetary row 12 are the same, the speed ratio of the whole planetary gear device 12 is 1, the power is transmitted from the first gear 133, the intermediate shaft 17, the fourth gear 173, the differential gear 192 and the differential 19, and finally to the wheel end; path two is transmitted by the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in the secondary engine direct drive mode when the vehicle is running at medium or low speed.

Fig. 23 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a three-stage hybrid mode. As shown in fig. 23, the power transmission direction is as indicated by the arrow in the drawing, in the three-stage hybrid mode, the clutch 14 is not operated, the synchronizer 16 is in the left position, the ring gear 123 is engaged with the engagement element, the first brake 15a or the one-way clutch brakes the sun gear 122, the engine 11 drives the carrier 124 to rotate, and the second motor 18 is driven. In the embodiment, the power transmission has two paths, wherein in the first path, the engine 11 drives the planet carrier 124 to transmit power to the ring gear 123, and the power is transmitted to the intermediate shaft 17 through the first gear 133, then to the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end; path two is transmitted by the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end.

Fig. 24 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a four-stage hybrid mode. As shown in fig. 24, in the four-stage hybrid mode, the power transmission direction is as indicated by the arrow in the drawing, the clutch 14 is operated, the clutch 14 fixes the first gear 133 to the first motor output shaft 132, the synchronizer 16 is in the right position, the second brake 15b or the one-way clutch brakes the ring gear 123, and the engine 11, the first motor 13, and the second motor 18 are driven. In the embodiment, the power transmission has two paths, wherein in the first path, the engine 11 drives the planet carrier 124 to transmit power to the sun gear 122, the first motor 13 also transmits power to the sun gear 122, and after coupling, the power is transmitted to the wheel end through the first gear 133, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19 and the like; path two is transmitted by the second motor 18 through the third gear 183 to the second gear 172, the intermediate shaft 17, the fourth gear 173, the differential gear 192, the differential 19, and finally to the wheel end. It is worth mentioning that the hybrid drive system 10 can be driven in a three-stage hybrid mode when the vehicle is traveling at medium to high speeds.

Fig. 25 is a power transmission diagram of a hybrid drive system according to a seventh embodiment of the present invention in a parking power generation mode. As shown in fig. 25, the power transmission direction is as indicated by the arrow in the drawing, and in the parking power generation mode, the clutch 14 is not operated, the synchronizer 16 is in the intermediate position, the engine 11 and the first motor 13 are not operated, and the second motor 18 generates power. In the embodiment, the power transmission has a path, and the power is transmitted to the second electric machine 18 from the wheel end through the differential 19, the differential gear 192, the fourth gear 173, the second gear 172 and the third gear 183, so as to drive the second electric machine 18 to rotate to generate electric energy.

The engine 11 and the first motor 13 of the hybrid power driving system 10 of the present invention are both connected to the planetary gear device, and the clutch gear device is disposed between the first motor 13 and the planetary gear device 12; the planetary gear device 12 includes a first rotating element connected to the first motor 13, a second rotating element connected to the engine 11, and a third rotating element; the clutch gear device includes a first clutch 14, a second clutch 16, and a clutch gear connected to the first clutch 14 and an engaging element, the clutch gear being connected to the output, the second clutch 16 being connected to the third rotating element, the second clutch 16 engaging the third rotating element with the engaging element; the first switch device locks or unlocks the first rotating element; the second motor 18 is arranged in parallel with the first motor 13, and the second motor 18 is connected to the output terminal. The utility model discloses a hybrid drive system 10 can be in one-level pure electric mode, the pure electric mode of second grade, increase journey mode, one-level engine and directly drive the mode, the second grade engine directly drives the mode, tertiary engine directly drives the mode, the mode is thoughtlessly moved to one-level, the mode is thoughtlessly moved to second grade, the mode is thoughtlessly moved to tertiary, the level four thoughtlessly moves mode and parking power generation mode down and work, has stronger flexibility. Moreover, the engine 11 and the first electric machine 13 are connected through the planet wheel 125 of the planetary gear device 12, the speed ratio is adjustable, the speed ratio range is wide, and the size of the first electric machine 13 can be effectively reduced. Furthermore, the utility model discloses a hybrid drive system 10 is when carrying out the mode switch, and second motor 18 participates in the drive, and there is not the problem of interrupt in power. Still further, the utility model discloses a hybrid drive system 10 can cover HEV motorcycle type and PHEV motorcycle type, and the platformization is good.

The utility model discloses not be limited to the specific details among the above-mentioned embodiment the utility model discloses a within the technical idea scope, can be right the technical scheme of the utility model carry out multiple simple variant, these simple variants all belong to the utility model discloses a protection scope. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

Claims

1. A hybrid drive system, comprising:

the engine and the first motor are connected with the planetary gear device, and the clutch gear device is arranged between the first motor and the planetary gear device;

the planetary gear device includes a first rotating element, a second rotating element, and a third rotating element, the first rotating element being connected with the first motor, the second rotating element being connected with the engine;

the clutch gear device includes a first clutch, a second clutch, and a clutch gear connected to the first clutch and an engaging element, the clutch gear being connected to an output, the second clutch being connected to the third rotating element, the second clutch engaging the third rotating element with the engaging element;

the first motor is provided with a first motor output shaft, the first motor output shaft is connected with the first rotating element, the first switching device is connected with the first motor output shaft, and the first switching device locks or unlocks the first rotating element through the first motor output shaft;

2. A hybrid drive system in accordance with claim 1, further comprising a second switch device that locks or unlocks said third rotating element.

3. A hybrid drive system as set forth in claim 2 wherein said first electric machine includes a first electric machine output shaft, said clutch gear arrangement being disposed on said first electric machine output shaft, said first clutch being connected to said first electric machine output shaft, said clutch gear being free-wheeling on said first electric machine output shaft, said engagement element being fixed to said first clutch and being parallel to said clutch gear.

4. A hybrid drive system as defined in claim 1, wherein said first electric machine, clutch gear, planetary gear, and engine are coaxially disposed.

5. The hybrid drive system according to claim 2, wherein the first rotating element is a sun gear, the second rotating element is a carrier, the third rotating element is a ring gear, the first switching device is a first brake or a one-way clutch, the second switching device is a second brake or a one-way clutch, and the clutch gear is a first gear;

the engine is provided with an engine output shaft, the planet carrier is connected with the engine output shaft, and the first gear is sleeved on the first motor output shaft in an empty manner;

6. A hybrid drive system as set forth in claim 5 further comprising a differential having a differential gear disposed thereon, said countershaft further having a fourth gear disposed thereon, said fourth gear intermeshed with said differential gear.

7. The hybrid drive system of claim 5, wherein the hybrid drive system has a primary electric-only mode, a secondary electric-only mode, a range-extended mode, a primary engine direct drive mode, a secondary engine direct drive mode, a tertiary engine direct drive mode, a primary hybrid mode, a secondary hybrid mode, a tertiary hybrid mode, a quaternary hybrid mode, and a park power mode.

8. The hybrid drive system of claim 7, wherein in the one-stage electric-only mode, none of the first clutch, the second clutch, the engine, and the first electric machine are active, and the second electric machine is driving; in the two-stage pure electric mode, the first clutch works, the first gear is fixed on the output shaft of the first motor by the first clutch, the engine and the second clutch do not work, and the first motor and the second motor are both driven.

9. The hybrid drive system according to claim 7, wherein in the range-extended mode, the first clutch and the second clutch are not operated, the second brake or the one-way clutch brakes the ring gear, the engine drives the first electric machine to generate electricity, the first electric machine supplies electric energy to the second electric machine, and the second electric machine drives.

10. The hybrid drive system as recited in claim 7 wherein in said primary engine direct drive mode, said first clutch is operative, said first clutch securing said first gear to said first motor output shaft, said second clutch is operative, said second clutch engaging said ring gear with said engagement element, said engine is driving, and neither said first motor nor said second motor is operative; in the two-stage engine direct drive mode, the first clutch is not operated, the second clutch is operated, the second clutch enables the gear ring to be connected with the connecting element, the first brake or the one-way clutch brakes the sun gear, the engine is driven, and the first motor and the second motor are not operated; in the three-stage engine direct-drive mode, the first clutch works, the first clutch enables the first gear to be fixed on the first motor output shaft, the second clutch does not work, the brake or the one-way clutch brakes the gear ring, the engine drives, and the first motor and the second motor do not work.

11. The hybrid drive system according to claim 7, wherein in the one-stage hybrid mode, the first clutch is not operated, the second clutch is operated, the second clutch engages the ring gear with the engagement element, the engine drives the carrier to rotate, the first motor drives the sun gear to rotate, the engine and the first motor are steplessly coupled through the planetary gear device, and the second motor is driven; in the two-stage hybrid mode, the first clutch is operated, the first clutch fixes the first gear to the first motor output shaft, the second clutch is operated, the second clutch engages the ring gear with the engagement element, and the engine, the first motor, and the second motor are all driven; in the three-stage hybrid mode, the first clutch is not operated, the second clutch is operated, the second clutch engages the ring gear with the engagement element, the first brake or one-way clutch brakes the sun gear, and the engine and the second motor are driven; in the four-stage hybrid mode, the first clutch works to fix the first gear on the first motor output shaft, the second clutch does not work, the second brake or the one-way clutch brakes the gear ring, and the engine, the first motor and the second motor are driven.

12. The hybrid drive system according to claim 7, wherein in the parking power generation mode, none of the first clutch, the second clutch, the engine, and the first electric machine operate, and power is transmitted from a wheel end to the second electric machine to generate power.

13. The hybrid drive system according to claim 2, wherein the first rotating element is a sun gear, the second rotating element is a ring gear, the third rotating element is a carrier, the first switching device is a first brake or a one-way clutch, and the second switching device is a second brake or a one-way clutch.

14. The hybrid drive system according to claim 2, wherein the first rotating element is a carrier, the second rotating element is one of a sun gear and a ring gear, the third rotating element is the other of the sun gear and the ring gear, the first switching device is a first brake or a one-way clutch, and the second switching device is a second brake or a one-way clutch.

15. The hybrid drive system according to claim 2, wherein the first rotating element is a ring gear, the second rotating element is one of a sun gear and a carrier, the third rotating element is the other of the sun gear and the carrier, the first switching device is a first brake or a one-way clutch, and the second switching device is a second brake or a one-way clutch.

16. A hybrid drive system, comprising:

the engagement means engages the third rotating element with the engagement element, or engages the third rotating element with the second switch means, or engages only the third rotating element;

the first motor is provided with a first motor output shaft, the first motor output shaft is connected with the first rotating element, the first switch device is connected with the first motor output shaft, the first switch device locks or unlocks the first rotating element through the first motor output shaft, and the second switch device locks or unlocks the third rotating element;