CN211390939U

CN211390939U - Hybrid power device and vehicle

Info

Publication number: CN211390939U
Application number: CN201921742974.1U
Authority: CN
Inventors: 谢伟乾; 王有刚; 许正功; 林霄喆
Original assignee: Yiwu Geely Automatic Transmission Co ltd; Zhejiang Geely Holding Group Co Ltd
Current assignee: Yiwu Geely Automatic Transmission Co ltd; Zhejiang Geely Holding Group Co Ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-09-01
Anticipated expiration: 2029-10-17

Abstract

The utility model discloses a hybrid power device, which comprises an engine, a generator, a driving motor, a clutch, a planet assembly, a first output assembly, a second output assembly and a differential mechanism; the engine passes through the planet subassembly with the generator is connected, the outer hub that changes of clutch with the planet subassembly is connected, the adversion hub of clutch passes through first output assembly with differential mechanism connects, driving motor passes through second output assembly with differential mechanism connects, the utility model discloses an engine, generator, driving motor's coaxial arrangement reduces radial dimension, has both reduced manufacturing cost, has improved gear drive precision again, has improved the NVH performance, and when the clutch was thrown off, pure electric drive can avoid engine and generator rotor's drag loss, has further improved whole car fuel economy.

Description

Hybrid power device and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to hybrid power device and vehicle.

Background

With the increase of national environmental protection, the application of the hybrid electric vehicle is more and more popular. At present, two popular transmission systems of hybrid electric vehicles exist, one is a power split hybrid system represented by toyota THS; another extended range hybrid system, such as the honda ilmd, is shown in fig. 1 (chinese patent CN 103298637A). The former adopts a planetary gear mechanism to introduce at least two power sources, and stepless speed change can be realized by adjusting the speed of the power sources. Through many generations of improvement, better fuel economy is obtained. However, the power source torque acts on different nodes of the torque lever of the planetary gear mechanism, the torques are balanced with each other and cannot be superposed, so that the power acceleration of the power split hybrid electric vehicle is poor. And the main function of the engine in the Honda iMMD hybrid power system is high-efficiency power generation. If desired, the engine may be directly connected to the output shaft, and the output torque thereof is superimposed with the output torque of the motor, greatly improving the dynamic acceleration of the vehicle. The hybrid vehicle has high fuel economy because the engine has high power generation efficiency and can directly drive the vehicle at high speed. Thus, Honda iMMD is soon being marketed by many manufacturers. Fig. 1 is a schematic diagram of the original patent. In fig. 1, the engine drives the generator to generate electricity through the gear pair. The gear pair increases the motor speed to improve the power generation efficiency. The driving motor drives the wheels through the gear pair and the speed reduction and torque increase. When the vehicle runs at high speed, the engine is combined with the clutch, and the wheels are directly driven by the engine through the clutch and the gear pair. The transmission has high transmission efficiency and good dynamic property, and is popular in the market after being put on the market.

However, the engine and the motor of the transmission are arranged in an off-axis mode, 4 shafts are shared, the radial size is large, the manufacturing difficulty is high, and the NVH performance is difficult to control.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a hybrid device and a vehicle, which can solve the problems of large size and difficult manufacturing of the conventional hybrid transmission.

In order to solve the technical problem, the utility model discloses a concrete technical scheme as follows:

in one aspect, the utility model provides a hybrid power device, which comprises an engine, a generator, a driving motor, a clutch, a planetary assembly, a first output assembly, a second output assembly and a differential mechanism; the engine passes through the planet subassembly with the generator is connected, the outer hub that changes of clutch with the planet subassembly is connected, the interior hub that changes of clutch passes through first output assembly with differential mechanism is connected, driving motor passes through second output assembly with differential mechanism is connected.

Further, the planetary assembly comprises an inner gear ring, a planetary gear, a planet carrier, a sun gear and a sun gear shaft; the outer ring of the inner gear ring is connected with the inner ring of the generator, the sun gear is arranged in the inner gear ring, the planetary gear is rotatably arranged on the planet carrier, the planetary gear is positioned between the sun gear and the inner gear ring and is meshed with the sun gear and the inner gear ring, and the sun gear is fixedly connected to the sun gear shaft.

In particular, the sun gear is fixed to the housing of the differential.

Specifically, one side of the planet carrier is connected with an outer rotating hub of the clutch, and the other side of the planet carrier is fixedly connected with an input shaft of the engine.

Alternatively, the carrier and the input shaft of the engine are of an integral structure.

Further, the first output assembly comprises a first driving gear and a first driven gear; the first driving gear is connected with an inner rotating hub of the clutch, the first driving gear is meshed with the first driven gear, and the first driven gear is connected with a gear ring of the differential mechanism.

Further, the second output assembly comprises a second driving gear and a second driven gear; the second driving gear is connected with the rotor of the driving motor, the second driving gear is meshed with the second driven gear, and the second driven gear is connected with the gear ring of the differential mechanism.

Further, the device still includes the main gear reduction subassembly, the main gear reduction subassembly includes first main gear reduction, the main gear reduction of second and the main gear reduction of third, first main gear reduction fixes one side of the main gear reduction of third, the main gear reduction of second fixes the opposite side of third gear, first main gear reduction with first driven gear meshes, the main gear reduction of second with second driven gear meshes, the main gear reduction of third with the ring gear meshing of differential mechanism.

Optionally, the rotor of the generator and the rotor of the driving motor are both hollow structures.

On the other hand, the utility model also provides a vehicle, the vehicle includes the aforesaid a hybrid device.

Adopt above-mentioned technical scheme, a hybrid device and vehicle have following beneficial effect:

1. a hybrid device and vehicle, adopt planet subassembly to give the generator acceleration rate, can guarantee that generator and engine all work in high-efficient speed district to improve vehicle fuel economy.

2. A hybrid device and vehicle, with engine, generator and the coaxial arrangement of driving motor, can avoid the transmission error that parallel shaft gear brought because of position error, also be favorable to generator and driving motor power transmission speed ratio to adjust simultaneously.

3. A hybrid device and vehicle, can reduce radially and axial dimension, simplify and mix the transmission structure, make it make easily, improve the NVH performance, reduce manufacturing cost, promote whole car carryability.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic diagram of a transmission operating in the prior art;

fig. 2 is a schematic structural view of a hybrid power device according to the present invention;

fig. 3 is a schematic structural diagram of a hybrid power device according to an embodiment of the present invention.

In the figure: 1-engine, 2-generator, 3-driving motor, 4-clutch, 5-planetary assembly, 6-first output assembly, 7-second output assembly, 8-differential, 9-main reduction gear assembly, 51-internal gear ring, 52-planetary gear, 53-planetary carrier, 54-sun gear, 55-sun gear shaft, 61-first driving gear, 62-first driven gear, 71-second driving gear, 72-second driven gear, 91-first main reduction gear, 92-second main reduction gear, 93-third main reduction gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.

Example 1

In the prior art, the connection between the engine and the generator of the transmission adopts an off-axis arrangement, which results in large radial volume of the transmission and high manufacturing difficulty, thereby increasing manufacturing cost and causing instability of NVH performance.

Specifically, as shown in fig. 2, the apparatus includes an engine 1, a generator 2, a drive motor 3, a clutch 4, a planetary assembly 5, a first output assembly 6, a second output assembly 7, and a differential 8; the engine 1 passes through planetary assembly 5 with the generator 2 is connected, the outer hub that changes of clutch 4 with planetary assembly 5 is connected, the interior hub that changes of clutch 4 passes through first output assembly 6 with differential mechanism 8 is connected, driving motor 3 pass through second output assembly 7 with differential mechanism 8 is connected.

Further, the planetary assembly 5 includes a ring gear 51, planetary gears 52, a planet carrier 53, a sun gear 54, and a sun gear shaft 55; the outer ring of the ring gear 51 is connected with the inner ring of the generator 2, the sun gear 54 is arranged in the ring gear 51, the planet gears 52 are rotatably arranged on the planet carrier 53, the planet gears 52 are positioned between the sun gear 54 and the ring gear 51 and are meshed with the sun gear 54 and the ring gear 51, and the sun gear 54 is fixedly connected with the sun gear shaft 55.

Meanwhile, the input shaft of the engine 1 and the planet carrier 53 may be of an integrated structure, so that the engine 1 drives the planet carrier 53 to rotate, and the stability of the connection structure between the engine 1 and the planet carrier 53 is also guaranteed, of course, the input shaft of the engine 1 may be connected with the planet carrier through a mechanical structure, and the output end of the planet carrier 53 is connected with the outer rotating hub of the clutch 4, so that the clutch 4 may adjust the operation of the engine 1, and then the generator 2 is driven to rotate through the planet assembly 5.

It should be noted that, the rotors of the generator 2 and the driving motor 3 may be hollow structures, the clutch 4 may also be disposed in the rotor of the generator 2, and the planetary assembly 5 may also be disposed in the rotor of the generator 2, so that the planetary assembly 5 and the clutch 4 may be appropriately sized according to the size of the rotor of the generator 2, and the driving motor 3 is connected to the second output assembly 7 through a driving motor connecting plate.

In some embodiments, the sun gear 54 is fixed to the housing of the differential 8 for better securing the planetary assembly 5.

In some embodiments, the first output assembly 6 and the second output assembly 7 can transmit kinetic energy through a gear transmission manner, and specifically, the first output assembly 6 includes a first driving gear 61 and a first driven gear 62; the first driving gear 61 is connected with the inner hub of the clutch 4, the first driving gear 61 is meshed with the first driven gear 62, the first driven gear 62 is connected with the ring gear of the differential 8 through a main reduction gear assembly 9, and the second output assembly 7 comprises a second driving gear 71 and a second driven gear 72; the second driving gear 71 is connected with the rotor of the driving motor 3, the second driving gear 71 is meshed with the second driven gear 72, and the second driven gear 72 is connected with the ring gear of the differential gear 8 through the main reduction gear assembly 9.

Of course, in order to satisfy the requirement that the driving motor 3 and the engine 1 separately operate, the main reducing gear assembly 9 may be configured to sequentially rotate the connected first main reducing gear 91, third main reducing gear 93 and second main reducing gear 92, wherein the third main reducing gear 93 is engaged with the ring gear of the differential 8, the first main reducing gear 91 is engaged with the first driven gear 62, the second main reducing gear 92 is engaged with the second driven gear 72, the rotation of the third main reducing gear 93 can be controlled by the rotation of the first main reducing gear 91 and the second main reducing gear 92, and the operations of the first main reducing gear 91 and the second main reducing gear 92 are not affected by each other.

It should be noted that the connection relationship between the first main reduction gear 91, the third main reduction gear 93 and the second main reduction gear 92 and other components is not limited to the above-mentioned scheme, specifically, the first main reduction gear 91 may be engaged with the ring gear of the differential 8, the second main reduction gear 92 may be engaged with the second driven gear 72, the third main reduction gear 93 may be engaged with the first driven gear 62, the rotation of the first main reduction gear 91 may be controlled by the rotation of the third main reduction gear 93 and the second main reduction gear 92, and the operations of the second main reduction gear 92 and the third main reduction gear 93 may not be affected by each other.

Through the hybrid power device that above-mentioned provided, at low-speed and urban operating mode, when the battery electric quantity is higher, can realize pure electric drive, compare with transmission fuel automobile, under low-speed and start-stop operating mode, can avoid the emission and the noise pollution that engine idling and low-speed operation uneconomic region brought, promote whole car economic nature.

Meanwhile, multiple working modes can be selected according to different road conditions and vehicle conditions, such as a pure electric drive (EV) mode, an engine driving mode, a series driving mode, a parallel driving mode and a braking energy recovery mode;

the EV mode driving operation method comprises the following steps: the clutch is controlled to be disconnected, the driving motor 3 is controlled to work, energy is provided by a vehicle power battery (not marked), the second output assembly 7 is driven to rotate, power is transmitted to the differential mechanism 8 through the second main reduction gear 92 and the third main reduction gear 93, wheels are driven to rotate, and then the vehicle is driven to move forwards or the function of backing is achieved.

The direct drive mode operation method of the engine comprises the following steps: the clutch 4 is controlled to be combined, the engine 1 provides kinetic energy, the power is transmitted to the differential gear 8 through the planet component 5, the clutch 4 and the first output component 6, the direct drive function of the engine is generally used under the high-speed working condition, and the engine is at the economic rotating speed at the moment, so that the fuel economy is realized.

The series mode operation method comprises the following steps: the clutch 4 is controlled to be disconnected, the engine 1 works to drive the generator 2 to rotate, and then the driving motor 3 is charged to supplement energy, specifically, power is transmitted to a rotor of the generator 2 through the engine 1 and the planetary assembly 5, the rotor of the generator 2 rotates to generate electric energy, so that the driving motor 3 is charged, the motor is started to work, and the power is transmitted to the differential mechanism 8 through the second output assembly 7, the second main reduction gear 92 and the second main reduction gear 93, so that wheels are driven. Under low-speed and urban conditions, when the electric quantity of the motor is low, the running rotating speed of the engine can be decoupled from the road condition by using the series mode, the engine is controlled at the economic rotating speed conveniently, the efficient power generation operation of the engine can be realized, and the electric drive is realized. And the fuel economy is improved.

The operation method of the parallel mode is as follows: the clutch 4 is controlled to be closed, the engine 1 and the driving motor 3 work simultaneously to provide energy, power is coupled at the third main reduction gear 93 through the first main reduction gear 91 and the second main reduction gear 92 and is transmitted to the differential, the mode is mainly under the high-speed and overtaking working conditions, and the torque is provided by the engine and the driving motor together to meet the driving requirement at the moment because the single energy cannot meet the power requirement.

The operation method of the braking energy recovery mode comprises the following steps: the clutch 4 is controlled to be disconnected, when the vehicle brakes and decelerates, energy is transmitted from wheels, a gear ring of the differential mechanism 8, the third main reduction gear 93, the second main reduction gear 92, the second output assembly 7 to a rotor of the driving motor 3, so that the energy is recovered in a power battery, and under the braking and decelerating working condition, kinetic energy of the vehicle is converted into electric energy through the energy recovery function and stored in the battery for next electric drive, thereby being beneficial to reducing energy loss and prolonging the endurance mileage.

Of course, the connection relationship between different gears and the power transmission path of the above working modes are also different, and therefore, the description thereof is not repeated herein.

As shown in fig. 3, another embodiment of the present specification is obtained on the basis of the above-mentioned providing device, specifically, only the configuration of the planetary assembly is omitted, and the engine directly drives the generator to rotate, which requires that the economic rotation speed of the generator and the economic rotation speed of the engine are matched, so that the structure is simpler, and the above-mentioned multiple driving modes can also be provided, and the working principle thereof is the same, and thus, the description is not repeated herein.

In another aspect, an embodiment of the present specification further provides a vehicle including the hybrid power device provided above.

Through the hybrid power device and the vehicle provided by the above, the following beneficial effects can be obtained:

1) a hybrid device and vehicle, adopt planet subassembly to give the generator acceleration rate, can guarantee that generator and engine all work in high-efficient speed district to improve vehicle fuel economy.

2) A hybrid device and vehicle, with engine, generator and the coaxial arrangement of driving motor, can avoid the transmission error that parallel shaft gear brought because of position error, also be favorable to generator and driving motor power transmission speed ratio to adjust simultaneously.

3) A hybrid device and vehicle, can reduce radially and axial dimension, simplify and mix the transmission structure, make it make easily, improve the NVH performance, reduce manufacturing cost, promote whole car carryability.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention, as will be apparent to those skilled in the art, the invention is not limited to the details of the foregoing exemplary embodiment, but rather is embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A hybrid power device is characterized by comprising an engine (1), a generator (2), a driving motor (3), a clutch (4), a planetary assembly (5), a first output assembly (6), a second output assembly (7) and a differential (8); the engine (1) passes through planetary assembly (5) with generator (2) are connected, the outer hub that changes of clutch (4) with planetary assembly (5) are connected, the interior hub that changes of clutch (4) passes through first output assembly (6) with differential mechanism (8) are connected, driving motor (3) pass through second output assembly (7) with differential mechanism (8) are connected.

2. Hybrid device according to claim 1, characterized in that the planetary assembly (5) comprises an annulus gear (51), planetary gears (52), a planet carrier (53), a sun gear (54) and a sun gear shaft (55); the outer ring of the inner gear ring (51) is connected with the inner ring of the generator (2), the sun gear (54) is arranged in the inner gear ring (51), the planetary gear (52) is rotatably arranged on the planet carrier (53), the planetary gear (52) is positioned between the sun gear (54) and the inner gear ring (51) and is meshed with the sun gear (54) and the inner gear ring (51), and the sun gear (54) is fixedly connected to the sun gear shaft (55).

3. Hybrid arrangement according to claim 2, characterized in that the sun wheel (54) is fixed to the housing of the differential (8).

4. Hybrid device according to claim 2, characterized in that one side of the planet carrier (53) is connected to the outer hub of the clutch (4) and the other side of the planet carrier (53) is fixedly connected to the input shaft of the engine (1).

5. A hybrid arrangement according to claim 4, characterised in that the planet carrier (53) is of unitary construction with the input shaft of the engine (1).

6. A hybrid device according to claim 1, characterized in that said first output assembly (6) comprises a first driving gear (61) and a first driven gear (62); the first driving gear (61) is connected with an inner rotary hub of the clutch (4), the first driving gear (61) is meshed with the first driven gear (62), and the first driven gear (62) is connected with a gear ring of the differential (8).

7. Hybrid device according to claim 6, characterized in that said second output assembly (7) comprises a second driving gear (71) and a second driven gear (72); the second driving gear (71) is connected with the rotor of the driving motor (3), the second driving gear (71) is meshed with the second driven gear (72), and the second driven gear (72) is connected with the gear ring of the differential (8).

8. A hybrid device according to claim 7, characterized in that the device further comprises a main reduction gear assembly (9), the main reduction gear assembly (9) comprising a first main reduction gear (91), a second main reduction gear (92) and a third main reduction gear (93), the first main reduction gear (91) being fixed on one side of the third main reduction gear (93), the second main reduction gear (92) being fixed on the other side of the third main reduction gear (93), the first main reduction gear (91) meshing with the first passive gear (62), the second main reduction gear (92) meshing with the second passive gear (72), the third main reduction gear (93) meshing with the ring gear of the differential (8).

9. Hybrid plant according to claim 1, characterized in that the rotor of the generator (2) and the rotor of the drive motor (3) are both hollow structures.

10. A vehicle characterized by comprising a hybrid power unit of any one of claims 1 to 9.