Hybrid power transmission system and hybrid electric vehicle

Abstract

The utility model relates to the technical field of hybrid electric vehicles, in particular to a hybrid power transmission system and a hybrid electric vehicle, the hybrid power transmission system comprises a motor and a clutch which are in transmission connection, the motor comprises a motor rotating assembly, and the clutch comprises a first friction disc assembly and a second friction disc assembly which are in clutch transmission. The motor rotating assembly is provided with a mounting part, and the pressure plate assembly is arranged on the mounting part, so that the motor rotating assembly forms a bracket of the pressure plate assembly; the hybrid electric vehicle is provided with the hybrid power transmission system. The motor rotating assembly can be used as a power output component of the motor and can also be used as a part of the clutch, so that the motor and the clutch share parts, and the transmission shaft of the motor rotating assembly can play a role in transmitting power of the motor and can also play a role in a support of the pressure plate assembly. The structure of the hybrid power transmission system is simpler, the power transmission process of the hybrid power transmission system is simplified, and the transmission efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of hybrid vehicle technology, specifically to an improvement of a hybrid powertrain system and a hybrid vehicle having the hybrid powertrain system. Background Technology

[0002] Hybrid electric vehicles (HEVs) are vehicles whose drive systems consist of two or more individual drive systems that can operate simultaneously. They generally refer to hybrid electric vehicles (HEVs) that use an engine and an electric motor as power sources. In existing HEV powertrains, the electric motor's driveshaft is typically independent. This not only increases the number and weight of components but also makes power transmission more complex, leading to higher manufacturing costs and maintenance difficulties. Furthermore, the presence of an independent driveshaft for the electric motor can cause energy loss during transmission, reducing transmission efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a hybrid powertrain system and a hybrid electric vehicle, so as to overcome the defects of the independent motor drive shaft in the existing hybrid powertrain system and simplify the structure and power transmission of the hybrid powertrain system.

[0004] To achieve the above objectives, the technical solution of this utility model includes:

[0005] A hybrid power transmission system includes a motor and a clutch connected by transmission. The motor includes a motor rotating assembly for connecting to a transmission mechanism and for outputting motor power to the transmission mechanism. The clutch includes a first friction disc assembly and a second friction disc assembly for clutch transmission, and a pressure plate assembly for driving the first friction disc assembly to engage and disengage the clutch transmission to the second friction disc assembly. The motor rotating assembly has a mounting portion, and the pressure plate assembly is disposed on the mounting portion, thereby forming a support for the pressure plate assembly.

[0006] In one embodiment, the motor rotation assembly includes a relatively fixed motor rotor, a drive shaft, and the mounting portion. The motor rotor is used to output the power of the motor, the drive shaft is used to connect to the speed change mechanism and to output the rotation of the motor rotor to the speed change mechanism, the mounting portion is a rotating shaft structure, and the pressure plate assembly is synchronously rotatably mounted on the rotating shaft structure, so that the pressure plate assembly and the motor rotor both rotate synchronously with the drive shaft as the rotating shaft.

[0007] In one embodiment, the pressure plate assembly includes a movable plate, which is sleeved on the mounting portion in a manner that allows it to slide relative to the mounting portion along the axial direction and rotate synchronously with the mounting portion. The motor rotation assembly further includes a pressure plate drive portion, which is disposed on one side of the movable plate. The pressure plate drive portion and the movable plate are connected and form a pressure plate drive cavity between them. The pressure plate drive cavity is used to introduce liquid, and the movable plate is used to move in the direction of the first friction plate assembly under the hydraulic action of the liquid in the pressure plate drive cavity, thereby pushing the first friction plate assembly to engage with the second friction plate assembly.

[0008] In one embodiment, the pressure plate assembly further includes a fixed plate disposed on the side of the movable plate away from the pressure plate drive portion. The fixed plate is fixedly sleeved on the mounting portion, and a pressure plate reset cavity is formed between the fixed plate and the movable plate. The pressure plate reset cavity is used to introduce liquid, and the movable plate is used to move in the direction away from the first friction plate assembly under the hydraulic action of the liquid in the pressure plate reset cavity, thereby pushing the first friction plate assembly to reset.

[0009] In one embodiment, the pressure plate reset cavity is provided with an elastic reset element, which works together with the liquid in the pressure plate reset cavity to drive the movable plate to reset.

[0010] In one embodiment, the mounting portion is a hollow rotating shaft structure, the pressure plate assembly is mounted on its outer side, the mounting portion has liquid channels respectively communicating with the pressure plate drive cavity and the pressure plate reset cavity, one end of the mounting portion has a first connecting portion extending radially inward therein, one end of the drive shaft has a second connecting portion extending radially inward thereoutward therein, the first connecting portion and the second connecting portion are connected such that the inner side of the mounting portion and the outer side of the drive shaft form a cavity for mounting at least a portion of the liquid pipeline, and the liquid channel is also connected to the liquid pipeline.

[0011] In one embodiment, the device further includes an end cap disposed at one end of the motor rotating assembly, the end cap having a liquid conduit inside, and a portion of the end cap extending into the cavity, thereby allowing a portion of the liquid conduit to extend into the cavity and communicate with the liquid channel.

[0012] In one embodiment, the motor rotor is a hollow cylindrical structure, and the first friction disc assembly is synchronously rotatably connected to the inner side of the motor rotor, thereby the motor rotating assembly also forms a support for the first friction disc assembly.

[0013] The technical solution of this utility model also includes:

[0014] A hybrid electric vehicle, comprising the aforementioned hybrid powertrain system.

[0015] The beneficial effects of this utility model are as follows: By installing the pressure plate assembly of the clutch on the motor rotating assembly, the motor rotating assembly forms a support for the pressure plate assembly. The motor rotating assembly can serve as both a power output component of the motor and a part of the clutch, allowing the motor and clutch to share parts. The drive shaft of the motor rotating assembly can both transmit the power of the motor and serve as a support for the pressure plate assembly, making the structure of the hybrid power transmission system simpler, simplifying its power transmission process, and improving transmission efficiency. Attached Figure Description

[0016] Figure 1 This is a perspective view of Embodiment 1 of this utility model.

[0017] Figure 2 This is a cross-sectional view of Embodiment 1 of this utility model.

[0018] Figure 3 This is a cross-sectional view of a portion of the structure of Embodiment 1 of this utility model.

[0019] Figure 4 This is a cross-sectional view of a portion of the structure of Embodiment 1 of this utility model from another perspective.

[0020] The components include: 1 motor, 11 motor rotating assembly, 101 connector, 110 liquid channel, 111 mounting part, 112 motor rotor, 113 drive shaft, 114 first connecting part, 115 pressure plate drive part, 116 second connecting part, 117 cavity, 12 end cover, 2 clutch, 201 pressure plate drive cavity, 202 pressure plate reset cavity, 21 first friction plate assembly, 22 second friction plate assembly, 23 pressure plate assembly, 231 movable plate, 232 fixed plate, and 233 elastic reset component. Detailed Implementation

[0021] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0022] Example 1

[0023] See Figures 1 to 4As shown, this utility model discloses a hybrid power transmission system, including a motor 1 and a clutch 2 connected by transmission. The motor 1 includes a motor rotating assembly 11, which is part of the motor 1 and is used to connect to a transmission mechanism and output power from the motor 1 to the transmission mechanism. The clutch 2 includes a first friction disc assembly 21 and a second friction disc assembly 22 for clutch engagement and disengagement, and a pressure plate assembly 23 for driving the first friction disc assembly 21 to engage and disengage the second friction disc assembly 22. The motor rotating assembly 11 is provided with a mounting portion 111, and the pressure plate assembly 23 is disposed on the mounting portion 111, thereby the motor rotating assembly 11 forms a support for the pressure plate assembly 23.

[0024] This invention mounts the pressure plate assembly 23 of the clutch 2 onto the motor rotating assembly 11, making the motor rotating assembly 11 a support for the pressure plate assembly 23. The motor rotating assembly 11 can serve as both a power output component of the motor 1 and a part of the clutch 2, allowing the motor 1 and clutch 2 to share parts. The drive shaft of the motor rotating assembly 11 can both transmit the power of the motor 1 and serve as a support for the pressure plate assembly 23, making the structure of the hybrid power transmission system simpler, simplifying its power transmission process, and improving transmission efficiency.

[0025] The motor rotation assembly 11 also includes a motor rotor 112 and a drive shaft 113 fixed relative to the mounting part 111. The motor rotor 112 is used to output the power of the motor 1, and the drive shaft 113 is used to connect to the speed change mechanism (not shown in the figure) and to output the rotation of the motor rotor 112 to the speed change mechanism. The mounting part 111 is a rotating shaft structure, and the pressure plate assembly 23 is synchronously mounted on the rotating shaft structure, so that the pressure plate assembly 23 and the motor rotor 112 both rotate synchronously with the drive shaft 113 as the rotating shaft. In this embodiment, the mounting part 111 is provided on a connector 101. The area of ​​the connector 101 near the motor rotor 112 is provided with a connecting hole. The connector 101 and the motor rotor 112 are connected relatively fixedly by bolts passing through the connecting hole. The connector 101 also includes a first connecting part 114 and a pressure plate drive part 115, which are respectively disposed at both ends of the mounting part 111 and extend radially along the mounting part 111, that is, the mounting part 111, the first connecting part 114 and the pressure plate drive part 115 are integrally connected.

[0026] The pressure plate assembly 23 includes a movable plate 231, which is sleeved on the mounting portion 111 in such a way that it slides relative to the mounting portion 111 along the axial direction and rotates synchronously with the mounting portion 111. The pressure plate drive portion 115 is disposed on one side of the movable plate 231. The pressure plate drive portion 115 and the movable plate 231 are connected and form a pressure plate drive cavity 201 between them. More specifically, the movable plate 231 is connected to the mounting portion 111 and the pressure plate drive portion 115 respectively, and a seal is provided between the movable plate 231 and the mounting portion 111 and between the movable plate 231 and the pressure plate drive portion 115 respectively, so that the space between the movable plate 231, the mounting portion 111 and the pressure plate drive portion 115 forms the pressure plate drive cavity 201. The pressure plate drive chamber 201 is used to introduce liquid, and the movable plate 231 is used to move towards the direction of the first friction plate assembly 21 under the hydraulic action of the liquid in the pressure plate drive chamber 201, thereby pushing the first friction plate assembly 21 to engage with the second friction plate assembly 22, forming the transmission engagement of the clutch, and transmitting the power of the motor 1 to the shaft of the second friction plate assembly 22.

[0027] The pressure plate assembly 23 also includes a fixed plate 232 disposed on the side of the movable plate 231 away from the pressure plate drive part 115. The fixed plate 232 is fixedly sleeved on the mounting part 111. A pressure plate reset cavity 202 is formed between the fixed plate 232 and the movable plate 231. The pressure plate reset cavity 202 is used to introduce liquid. The movable plate 231 is used to move in the direction away from the first friction plate assembly 21 under the hydraulic action of the liquid in the pressure plate reset cavity 202, thereby pushing the first friction plate assembly 21 to reset.

[0028] Furthermore, the fluid supplied to the pressure plate drive chamber 201 and the pressure plate reset chamber 202 is hydraulic oil from the hydraulic system, and the movable plate 231 is controlled to move by the hydraulic system. The principle by which the hydraulic system controls the movement of the pressure plate assembly 23 is existing technology and will not be elaborated here.

[0029] The pressure plate reset chamber 202 is equipped with an elastic reset element 233. The elastic reset element 233 and the liquid in the pressure plate reset chamber 202 work together to drive the movable plate 231 to reset. The elastic reset element 233 in the pressure plate reset chamber 202 enables the movable plate 231 to reset more quickly, thus accelerating the response speed of the clutch 2. In this embodiment, the elastic reset element 233 is a spring, and multiple springs are provided, spaced apart along the circumference of the mounting portion 111.

[0030] The mounting part 111 is a hollow rotating shaft structure, with the pressure plate assembly 23 mounted on its outer side. The mounting part 111 has liquid channels 110 that connect to the pressure plate drive cavity 201 and the pressure plate reset cavity 202 respectively. A first connecting part 114 is located on the inner side of one end of the mounting part 111 and extends radially therein. One end of the drive shaft 113 has a second connecting part 116 that extends radially thereout. The first connecting part 114 and the second connecting part 116 are fixedly connected (e.g., welded) so that the inner side of the mounting part 111 and the outer side of the drive shaft 113 form a cavity 117. This cavity 117 can be used to install at least a portion of the liquid pipeline. The liquid channels 110 are also connected to the liquid pipeline. Here, the liquid pipeline refers to the pipeline of the hydraulic system. There are two liquid channels 110, one connected to the pressure plate drive cavity 201 and the other connected to the pressure plate reset cavity 202. The hydraulic oil of the hydraulic system enters the pressure plate drive cavity 201 or the pressure plate reset cavity 202 through the liquid pipeline and the liquid channel 110.

[0031] See Figures 1 to 4 As shown, the hybrid powertrain system also includes an end cap 12 disposed at one end of the motor rotating assembly 11. The end cap 12 has a liquid pipeline inside, and a portion of the end cap 12 extends into the cavity 117, thereby allowing a portion of the liquid pipeline to extend into the cavity 117 and communicate with the liquid channel 110. In this embodiment, the liquid pipeline of the end cap 12 is connected to the hose of the hydraulic system, so that hydraulic oil enters the pressure plate drive cavity 201 or the pressure plate reset cavity 202 through the liquid pipeline and the liquid channel 110.

[0032] In other embodiments, the liquid pipeline can be arranged in other forms, such as a flexible hose directly inserted into the liquid channel 110 of the mounting part 11.

[0033] The motor rotor 112 is a hollow cylindrical structure. The first friction disc assembly 21 is synchronously rotatably connected to the inner side of the motor rotor 112, so the motor rotating assembly 11 also forms a support for the first friction disc assembly 21. Specifically, the first friction disc assembly 21 and the motor rotor 112 are synchronously rotatably connected through a gear transmission structure. Under the action of the pressure plate assembly 23, the first friction disc assembly 21 can move along the axial direction of the motor rotor 112 to approach or move away from the second friction disc assembly 22, thereby realizing the clutch 2's engagement and disengagement transmission.

[0034] The working process of this utility model includes:

[0035] When the first friction disc assembly 21 and the second friction disc assembly 22 of the clutch 2 are disengaged, the motor 1 drives the motor rotating assembly 11 to rotate. At this time, the first friction disc assembly 21 and the pressure plate assembly 23 of the clutch 2 rotate synchronously with the motor rotating assembly 11. The power of the motor 1 is output to the transmission mechanism only through the transmission shaft 113 of the motor rotating assembly 11.

[0036] When the pressure in the pressure plate drive chamber 201 is greater than the pressure in the pressure plate reset chamber 202, the pressure plate assembly 23 pushes the first friction plate assembly 21 to move and engage with the second friction plate assembly 22. The motor rotation assembly 11 of the motor 1 and the clutch 2 rotate synchronously. The power of the motor 1 is transmitted to the bracket of the second friction plate assembly 22 through the first friction plate assembly 21 and the second friction plate assembly 22, making the power output mode of the motor 1 more diverse. For example, by means of the cooperation of the clutch 2 and the transmission mechanism, the power of the motor 1 is coupled with the power of the engine to output greater power.

[0037] Example 2

[0038] This utility model also discloses a hybrid electric vehicle, including the hybrid powertrain system disclosed in Embodiment 1. The structure and principle of the hybrid powertrain system have been described in detail in Embodiment 1, and will not be repeated here.

[0039] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that the remaining undescribed parts are prior art, and that all changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A hybrid drive system comprising a motor and a clutch in driving connection, the motor comprising a motor rotating assembly for connection to a transmission mechanism and for outputting motor power to the transmission mechanism, the clutch comprising a first friction disc assembly and a second friction disc assembly in driving connection, and a pressure plate assembly for driving the first friction disc assembly in driving connection to the second friction disc assembly, characterised in that: The motor rotating assembly is provided with a mounting portion, and the pressure disc assembly is arranged on the mounting portion, so that the motor rotating assembly forms a support of the pressure disc assembly.

2. A hybrid powertrain system according to claim 1, characterised in that: The motor rotating assembly comprises a relatively fixed motor rotor, a transmission shaft and the mounting portion, the motor rotor is used for outputting power of the motor, the transmission shaft is used for being connected to a gear shifting mechanism and for outputting rotation of the motor rotor to the gear shifting mechanism, and the mounting portion is a rotating shaft structure, the pressure disc assembly is sleeved on the rotating shaft structure in a synchronous rotating mode, so that the pressure disc assembly and the motor rotor are synchronously rotated with the transmission shaft as a rotating shaft.

3. A hybrid powertrain system according to claim 2, characterised in that: The pressure disc assembly comprises a movable disc, the movable disc is sleeved on the mounting portion in a mode of axial relative sliding and synchronous rotation with the mounting portion, the motor rotating assembly further comprises a pressure disc driving portion, the pressure disc driving portion is arranged on one side of the movable disc, the pressure disc driving portion is connected with the movable disc and forms a pressure disc driving cavity therebetween, the pressure disc driving cavity is used for inputting liquid, and the movable disc is used for moving towards a direction where the first friction disc assembly is located under the hydraulic pressure of the liquid in the pressure disc driving cavity, so as to push the first friction disc assembly to engage with the second friction disc assembly.

4. A hybrid power transmission system according to claim 3, characterised in that: The pressure disc assembly further comprises a fixed disc arranged on a side of the movable disc away from the pressure disc driving portion, the fixed disc is fixedly sleeved on the mounting portion, a pressure disc reset cavity is formed between the fixed disc and the movable disc, the pressure disc reset cavity is used for inputting liquid, and the movable disc is used for moving away from the first friction disc assembly under the hydraulic pressure of the liquid in the pressure disc reset cavity, so as to push the first friction disc assembly to reset.

5. A hybrid power transmission system according to claim 4, characterised in that: The pressure disc reset cavity is provided with an elastic reset member, and the elastic reset member and the liquid in the pressure disc reset cavity jointly act to drive the movable disc to reset.

6. A hybrid powertrain system according to claim 4, characterised in that: The mounting portion is a hollow rotating shaft structure, the pressure disc assembly is arranged on an outer side of the mounting portion, the mounting portion is provided with liquid channels respectively connected to the pressure disc driving cavity and the pressure disc reset cavity, one end of the mounting portion is provided with a first connecting portion extending radially on an inner side thereof, one end of the transmission shaft is provided with a second connecting portion extending radially on an outer side thereof, and the first connecting portion and the second connecting portion are connected to form a cavity on the inner side of the mounting portion and the outer side of the transmission shaft, the cavity is used for mounting at least part of a liquid pipeline, and the liquid channels are further connected to the liquid pipeline.

7. A hybrid power transmission system according to claim 6, characterised in that: An end cover is further arranged on one end of the motor rotating assembly, the end cover is provided with a liquid pipeline therein, and a part of the end cover extends into the cavity, so that a part of the liquid pipeline extends into the cavity and is connected to the liquid channels.

8. A hybrid powertrain system according to claim 2, characterized in that: The motor rotor is a hollow cylindrical structure, and the first friction disc assembly is connected to an inner side of the motor rotor in a synchronous rotating mode, so that the motor rotating assembly further forms a support of the first friction disc assembly.

9. A hybrid vehicle characterized by comprising: The hybrid power transmission system comprises any one of the motor rotating assemblies according to claims 1 to 8.

Images