Driving mechanism and extended-range hybrid vehicle

Abstract

The utility model relates to the technical field of hybrid vehicle driving, in particular to a driving mechanism and an extended-range hybrid vehicle. The output assembly comprises a range extending assembly, and the range extending assembly comprises a range extender and a range extender gear connected to an output shaft of the range extender; the pivot assembly comprises an intermediate shaft which is arranged in the direction far away from the output shaft of the range extender; the output gear is hollowly sleeved on the intermediate shaft and is in transmission connection with wheels of the whole vehicle; the synchronizing part is connected to the intermediate shaft and located between the range extender gear and the output gear so as to be selectively synchronized with the range extender gear or the output gear; an output shaft of the motor is in transmission connection with the middle shaft and located on the side, away from wheels of the whole vehicle, of the middle shaft. The device has the effects of reducing the use of transmission gears, reducing the control difficulty and improving the integration level.

Description

Technical Field

[0001] This application relates to the technical field of hybrid vehicle drive, and in particular to a drive mechanism and a range-extended hybrid vehicle. Background Technology

[0002] Range-extended hybrid electric vehicles (REEVs) are hybrid vehicles that combine the features of pure electric vehicles and traditional gasoline-powered vehicles. The vehicle is primarily driven by an electric motor, providing a driving experience similar to a pure electric vehicle; when the battery is low, a small built-in gasoline engine (range extender) starts to charge the battery or directly supply power, but does not directly drive the wheels. REEVs combine the advantages of pure electric vehicles with the range anxiety of electric vehicles, integrating the low emissions of electric drive with the long range of gasoline drive, and currently have a promising market prospect.

[0003] The relevant documents disclose a range-extended hybrid system, including an engine, an automatic clutch, and a combiner box. The combiner box includes an input component, a generator shaft assembly, a drive motor shaft assembly, an output component, a housing, clutch accessories, a sliding sleeve, a clutch actuator, and a shifting mechanism. The generator shaft is equipped with a synchronizer and first and second gears, the input shaft has an input gear, the output shaft has an output gear, and the drive motor shaft has a third gear. Through the shifting mechanism and synchronizer, the generator can generate electricity or drive the vehicle according to vehicle demand and battery SOC value, making it suitable for various operating conditions.

[0004] The aforementioned technologies suffer from drawbacks, such as increased control difficulty due to their complex structures. Utility Model Content

[0005] To address the increased control difficulty caused by the complex structure of existing drive mechanisms, the purpose of this application is to provide a drive mechanism and a range-extended hybrid vehicle.

[0006] Firstly, the driving mechanism provided in this application adopts the following technical solution:

[0007] A drive mechanism includes: a range extender assembly, which includes a range extender and a range extender gear connected to the output shaft of the range extender;

[0008] Hub components, which include:

[0009] An intermediate shaft is disposed along a direction away from the output shaft of the range extender;

[0010] The output gear is either loosely fitted or fixedly mounted on the intermediate shaft and is connected to the vehicle wheel drive.

[0011] A synchronizing element is connected to the intermediate shaft and located between the range extender gear and the output gear. When the output gear is loosely mounted on the intermediate shaft, the synchronizing element selectively synchronizes with either the range extender gear or the output gear. When the output gear is fixedly mounted on the intermediate shaft, the synchronizing element selectively synchronizes with the range extender gear.

[0012] The motor has its output shaft connected to the intermediate shaft and is located on the side of the intermediate shaft away from the vehicle wheels.

[0013] By adopting the above technical solution, the intermediate shaft and the engine output shaft are arranged opposite to each other and coaxially. The pivot component is used to control the disengagement and engagement between the intermediate shaft and the engine gear, thereby controlling the disengagement and engagement between the intermediate shaft and the engine. This achieves pure electric drive while reducing the use of transmission gears, reducing control difficulty, and improving integration. Furthermore, the engine and motor are located on opposite sides of the pivot component. Compared with the traditional method of offsetting the motor and engine, there is no need to increase the center distance between the motor gear and the intermediate shaft gear, further improving integration.

[0014] Optionally, the synchronizing element includes a synchronizer and a shifting element connected to the synchronizer. When the output gear is loosely mounted on the intermediate shaft, the shifting element causes the synchronizer to selectively move towards or engage with the range extender gear or the output gear, so that the synchronizing element is selectively synchronized with the range extender gear or the output gear through the synchronizer. When the output gear is fixedly mounted on the intermediate shaft, the shifting element causes the synchronizer to selectively move towards or away from the range extender gear, so that the synchronizing element is selectively synchronized with or disengaged from the range extender gear through the synchronizer.

[0015] By adopting the above technical solution, the shifting component drives the synchronizer to work, selectively moving towards or away from the range extender gear or the output gear to engage or disengage, thereby achieving the selection of the transmission relationship; or the shifting component drives the synchronizer to work, selectively moving towards or away from the range extender gear to engage or disengage.

[0016] Optionally, a half-shaft is connected to the vehicle wheel, a differential is connected to the half-shaft, and a driven gear is provided to drive the differential to rotate, wherein the output gear meshes with the driven gear.

[0017] By adopting the above technical solution, the half-shaft, differential, and driven gear are configured to achieve the transmission connection between the output gear and the whole vehicle.

[0018] Optionally, the reduction ratio from the output gear to the driven gear is 3-4.

[0019] By adopting the above technical solution, the reduction ratio from the output gear to the driven gear is limited, thereby achieving a speed reduction and torque increase drive from the motor to the wheel.

[0020] Optionally, a motor gear is connected to the output shaft of the motor, and an intermediate shaft gear is provided on the intermediate shaft, with the motor gear meshing with the intermediate shaft gear.

[0021] By adopting the above technical solution, the motor gear meshes with the intermediate shaft gear to enable a transmission connection between the motor's output shaft and the intermediate shaft.

[0022] Optionally, the reduction ratio from the motor gear to the intermediate shaft gear is 3-4.

[0023] By adopting the above technical solution, the reduction ratio from the motor gear to the intermediate shaft gear is limited, thereby achieving a speed reduction and torque increase drive from the motor to the wheel.

[0024] Optionally, the intermediate shaft is rotatably connected to the output shaft of the range extender.

[0025] By adopting the above technical solution, the intermediate shaft and the output shaft of the range extender are rotatably connected, which satisfies the relative rotation requirements while providing relative auxiliary support.

[0026] Optionally, a groove is provided at one end of the intermediate shaft opposite to the output shaft of the range extender; a rotating shaft is provided at the other end of the output shaft of the range extender opposite to the intermediate shaft; the rotating shaft is connected to the groove sidewall of the intermediate shaft by a bearing.

[0027] By adopting the above technical solution, and setting the groove and rotating shaft to be connected with bearings, it is possible to effectively provide rotational support between the intermediate shaft and the output shaft of the range extender, while reducing friction accuracy and ensuring rotational accuracy.

[0028] Optionally, rollers are spaced apart on the rotating shaft; the groove sidewall is provided with an entry groove that matches and is spaced apart from the rollers, a rolling groove is provided that communicates with the entry groove, and a limiting block is formed between adjacent entry grooves, wherein the limiting block is outwardly arc-shaped on the side facing the rolling groove.

[0029] By adopting the above technical solution, the intermediate shaft and the output shaft of the range extender need to meet the requirements of disengagement and engagement between the synchronizer and the engine gear, which require small spacing and high synchronous transmission accuracy. Through the combined action of rollers, entry grooves, grooving, and limit blocks, the relative positioning effect between the intermediate shaft and the range extender is improved while providing axial and radial force transmission, and the synchronization components are disengaged and engaged with the engine output shaft.

[0030] Secondly, the range-extended hybrid vehicle provided in this application adopts the following technical solution:

[0031] Range-extended hybrid vehicles, including the drive mechanism.

[0032] By adopting the above technical solution, a range-extended hybrid vehicle including a highly integrated drive mechanism is provided.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. The intermediate shaft is set to be coaxially opposite to the engine output shaft, and the hub assembly is used to control the disengagement and engagement between the intermediate shaft and the engine gear, reducing the use of transmission gears, reducing control difficulty, and improving integration. Moreover, the engine and motor are set on opposite sides of the hub assembly. Compared with the traditional method of offsetting the motor and engine, there is no need to increase the center distance between the motor gear and the intermediate shaft gear, further improving integration.

[0035] 2. A synchronizing element is installed on the intermediate shaft to selectively connect with the engine's output shaft or the vehicle's wheel drive, enabling range-extended drive and pure electric drive. Simultaneously, in range-extended drive mode, non-parking charging is achieved. Alternatively, the synchronizing element can selectively engage or disengage with the engine's output shaft to achieve range-extended drive, pure electric drive, and hybrid parallel drive.

[0036] 3. The intermediate shaft and the output shaft of the range extender are connected by rollers, inlet grooves, grooves and limit blocks to achieve a rotational connection. This provides axial and radial force transmission, improves the relative positioning effect between the intermediate shaft and the range extender, and assists the synchronizing components in disengaging and engaging with the engine's output shaft. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the drive mechanism of one of the technical solutions in this application in the range-extended drive mode;

[0038] Figure 2 This is a schematic diagram of the drive mechanism of one of the technical solutions of this application in pure electric drive mode;

[0039] Figure 3 This is a schematic diagram of the drive mechanism of one of the technical solutions in this application;

[0040] Figure 4 This is a schematic diagram of the hub component and engine gear of one of the technical solutions in this application;

[0041] Figure 5 This is a schematic diagram of the end face structure of the intermediate shaft of one of the technical solutions in this application.

[0042] Explanation of reference numerals in the attached drawings: 1. Range extender; 10. Range extender gear; 11. Shaft; 2. Intermediate shaft; 20. Intermediate shaft gear; 21. Groove; 22. Inlet groove; 23. Roller groove; 24. Limit block; 3. Synchronizer; 30. Synchronizer; 31. Output gear; 4. Motor; 40. Motor gear; 5. Half shaft; 6. Differential; 7. Driven gear; 8. Roller. Detailed Implementation

[0043] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0044] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, up, down, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0045] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0046] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0047] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5This application will be described in further detail below.

[0049] Example 1:

[0050] Embodiment 1 of this application discloses a driving mechanism, referring to... Figure 1 and Figure 2 The drive mechanism includes a range extender, a hub assembly, and a motor 4.

[0051] I. The range extender assembly includes a range extender 1 and a range extender gear 10 connected to the output shaft of the range extender 1. In this embodiment, the range extender 1 can be a small internal combustion engine, specifically a gasoline engine. The small internal combustion engine generates mechanical energy by burning fuel, and the generated mechanical energy is output through the rotation of the output shaft of the range extender 1.

[0052] In order to enable the subsequent synchronizing element 3 to selectively connect with the output shaft of the range extender 1, the output shaft of the range extender 1 is connected to the range extender gear 10. When the synchronizing element 3 selectively engages with the range extender gear 10, the power output of the range extender 1 is transmitted to the intermediate shaft 2 through the range extender gear 10 and the synchronizing element 30.

[0053] II. The hub assembly includes intermediate shaft 2, output gear 31, and synchronizing element 3.

[0054] 2.1 The intermediate shaft 2 is set along the direction away from the output shaft of the range extender 1, that is, the intermediate shaft 2 is set coaxially with the output shaft of the range extender 1. The two do not need to be connected and can rotate independently.

[0055] To satisfy the relative rotation requirements between the intermediate shaft 2 and the output shaft of the range extender 1, while providing relative auxiliary support, in another embodiment, the intermediate shaft 2 and the output shaft of the range extender 1 can be connected, specifically a rotatable connection, as described below. Figure 4 and Figure 5 Specifically, it can be:

[0056] A groove 21, specifically a cylindrical groove, is provided at one end of the intermediate shaft 2 opposite to the output shaft of the range extender 1. In this embodiment, since the intermediate shaft 2 and the output shaft of the range extender 1 are rotatably connected, the intermediate shaft 2 and the groove 21 are coaxially arranged. To achieve rotatable connection while ensuring radial strength support, the end face diameter of the groove 21 is set to 0.4-0.45 times the end face diameter of the intermediate shaft 2.

[0057] A rotating shaft 11 is provided at the end of the output shaft of the range extender 1 opposite to the intermediate shaft 2; the rotating shaft 11 and the side wall of the groove 21 of the intermediate shaft 2 are connected by a bearing. In this embodiment, since the intermediate shaft 2 and the output shaft of the range extender 1 need to meet the requirements of small spacing and high synchronous transmission accuracy between the synchronizer 30 and the range extender gear 10, the bearing connection can be set as follows:

[0058] Rollers 8 are spaced apart on the rotating shaft 11. During installation, a groove for roller 8 is provided on the rotating shaft 11 corresponding to each roller 8. The end face of the roller groove is an arc to meet the embedding and rotation positioning of the roller 8.

[0059] The sidewall of the groove 21 is provided with an entry groove 22 that matches the roller 8 at intervals. A roller groove 23 is provided in communication with the entry groove 22. A limiting block 24 is formed between adjacent entry grooves 22. The limiting block 24 is outwardly arc-shaped on the side facing the roller groove 23. In this embodiment, the entry groove 22 cooperates with the groove 21 to allow the rotating shaft 11 on which the roller 8 is installed to slide through, so that the roller 8 enters the roller groove 23. The roller 8 can rotate circumferentially in the roller groove 23. During the circumferential rotation, the roller 8 is limited within the space of the roller groove 8 and the roller groove 23. At the same time, in order to meet the smoothness of rotation, the limiting block 24 is outwardly arc-shaped on the side facing the roller groove 23, forming a guiding function.

[0060] 2.2 The output gear 31 is loosely mounted on the intermediate shaft 2 and is connected to the vehicle wheel drive.

[0061] 2.3 The synchronizing element 3 is connected to the intermediate shaft 2 and is located between the range extender gear 10 and the output gear 31, so as to selectively synchronize with the range extender gear 10 or the output gear 31.

[0062] In this embodiment, the synchronizing element 3 may include a synchronizer 30 and a shifting element connected to the synchronizer 30. The shifting element drives the synchronizer 30 to selectively move and engage toward the range extender gear 10 or the output gear 31, so that the synchronizing element 3 is selectively synchronized with the range extender gear 10 or the output gear 31 through the synchronizer 30.

[0063] Synchronizer 30 is connected to intermediate shaft 2. In this embodiment, synchronization of synchronizer 30 can be achieved through synchronization rings (including a first synchronization ring and a second synchronization ring), or by reducing the speed difference between the two sides of the synchronizer through speed regulation of motor 4, thereby achieving synchronization. (Refer to...) Figure 4 In one embodiment, taking synchronization via a synchronizing ring as an example, the synchronizer 30 includes a splined hub, a slider, a coupling sleeve, a first synchronizing ring, and a second synchronizing ring. The splined hub is connected to the intermediate shaft 2 by a spline to transmit torque, thus connecting the synchronizer 30 to the intermediate shaft 2. The slider is fitted into the axial groove of the splined hub and can slide axially along the axial groove. The coupling sleeve is fitted around the splined hub circumferentially and positioned axially with the slider, driving the slider to slide axially along the axial groove. The first and second synchronizing rings are respectively located on both sides of the splined hub and are used to move under the action of the slider to synchronously mesh with the range extender gear 10 or the output gear 31 on the corresponding side, thus achieving gear shifting. The range extender gear 10 and the output gear 31 are respectively located on both sides of the synchronizer 30, corresponding to the first and second synchronizing rings respectively.

[0064] The shifting component is connected to the synchronizer 30 and is used to selectively move the synchronizer 30 toward the range extender gear 10 or the output gear 31 to engage, so that the synchronizer 30 is connected to the range extender 1 or to the vehicle wheels. In one embodiment, the shifting component is specifically connected to the engagement sleeve of the synchronizer 30. By shifting the shifting component, the engagement sleeve can be moved, which in turn moves the slider toward one side, thereby moving the corresponding synchronizer ring (which is determined to be the first synchronizer ring or the second synchronizer ring according to the actual setting). Taking the first synchronizer ring corresponding to the range extender gear 10 as an example, the first synchronizer ring moves toward the range extender gear 10, realizing the synchronous engagement of the two, thereby realizing the drive connection between the synchronizer 30 and the range extender 1.

[0065] In order to enable the synchronization mechanism to selectively connect with the vehicle wheels, the drive mechanism disclosed in this application also includes a half-shaft 5, a differential 6, and a driven gear 7. The half-shaft 5 is connected to the vehicle wheels, and the rotation of the half-shaft 5 drives the vehicle wheels to rotate, thereby driving the vehicle. The differential 6 is connected to the half-shaft 5 and is used to regulate and allow the left and right wheels to rotate at different speeds. The driven gear 7 is provided to drive the differential 6 to rotate, and the rotation of the driven gear 7 drives the differential 6 to work. The output gear 31 meshes with the driven gear 7, so that the rotation of the output gear 31 drives the vehicle wheels to move in sequence through the driven gear 7, the differential 6, and the half-shaft 5.

[0066] 3. The output shaft of motor 4 is connected to the intermediate shaft 2, and is located on the side of the intermediate shaft 2 away from the vehicle wheels.

[0067] In this embodiment, the range extender 1 and the motor 4 are respectively located on both sides of the hub assembly. Compared with the traditional method of offsetting the motor 4 and the range extender 1, it is not necessary to increase the center distance between the motor gear 40 and the intermediate shaft gear 20, thus further improving the integration.

[0068] To achieve the transmission connection between the output shaft of motor 4 and intermediate shaft 2, a motor gear 40 is connected to the output shaft of motor 4, and an intermediate shaft gear 20 is provided on intermediate shaft 2. The motor gear 40 and the intermediate shaft gear 20 mesh to achieve the transmission connection between the output shaft of motor 4 and intermediate shaft 2. When synchronizer 30 selectively engages with the input gear, the power output of motor 4 is transmitted through motor gear 40, intermediate shaft gear 20, and synchronizer 30 to output gear 31. Furthermore, the power is transmitted to the vehicle wheels through output gear 31 to achieve drive.

[0069] The drive from motor 4 to the vehicle wheels is a speed-reducing and torque-increasing drive, while the drive from range extender 1 to motor 4 is a speed-increasing generator. To achieve the above functions, the reduction ratio from output gear 31 to driven gear 7 is 3-4, and the reduction ratio from motor gear 40 to intermediate shaft gear 20 is also 3-4. Together, they achieve the effect of speed reduction and torque increase.

[0070] The implementation principle of Embodiment 1 of this application is as follows:

[0071] Range-extended drive mode: refer to Figure 2 The drive shifting component acts on the synchronizer 30, driving the synchronizer 30 to move and engage with the range extender gear 10. At this time, the synchronizer 30 and the output gear 31 are disconnected. When the range extender 1 is working, the power of the range extender 1 is transmitted to the synchronizer 30 through the range extender gear 10, and then to the intermediate shaft 2 through the synchronizer 30, and then to the intermediate shaft gear 20. After that, it is transmitted to the motor gear 40 through the intermediate shaft gear 20, thereby realizing the charging function of the range extender 1 to charge the motor 4.

[0072] Furthermore, in this operating mode, the intermediate shaft 2 is disengaged from the output gear 31. The rotation of the intermediate shaft 2 does not drive the output gear 31, thus preventing the wheels from being driven by the output gear 31. In other words, the motor 4 is disconnected from the wheels when the range extender 1 is charging, thanks to the synchronizing element 3, preventing the range extender 1 from driving the gears while charging. This further enables the vehicle to complete the charging process without parking, i.e., while driving.

[0073] Pure electric drive mode: The drive shifter acts on the synchronizer 30, driving the synchronizer 30 to move and engage with the output gear 31. At this time, the synchronizer 30 is disconnected from the range extender gear 10. The motor 4 works, and the power of the motor 4 is transmitted to the intermediate shaft gear 20 through the motor gear 40, then to the intermediate shaft 2, and then to the output gear 31 through the synchronizer 30. The power is then transmitted to the driven gear 7 and the differential 6 through the output gear 31, and then drives the vehicle to move.

[0074] Example 2

[0075] Embodiment 2 of this application discloses a driving mechanism, which is the same as Embodiment 1, except that, with reference to... Figure 3 The configurations of the hub components differ, and furthermore, the output gear 31 and the synchronizing element 3 of the hub components are configured differently.

[0076] The output gear 31 is fixed on the intermediate shaft 2 and is connected to the vehicle wheel drive.

[0077] Synchronizer 3 is connected to intermediate shaft 2 and located between range extender gear 10 and output gear 31, so as to selectively disengage from and engage with range extender gear 10 and not be connected to output gear 31.

[0078] In this embodiment, the synchronizing element 3 may include a synchronizer 30 and a shifting element connected to the synchronizer 30. The shifting element drives the synchronizer 30 to selectively move toward the range extender gear 10 to engage the two or to selectively move away from the range extender gear 10 to disengage the two.

[0079] Synchronizer 30 is connected to intermediate shaft 2. In this embodiment, synchronization of synchronizer 30 can be achieved through a synchronization ring or by adjusting the speed of motor 4.

[0080] The implementation principle of Embodiment 2 of this application is as follows:

[0081] Range-extended drive mode: refer to Figure 3 The drive shifting component acts on the synchronizer 30, driving the synchronizer 30 to move and engage with the range extender gear 10; the range extender 1 works, and the power of the range extender 1 is transmitted to the synchronizer 30 through the range extender gear 10, then to the intermediate shaft 2 through the synchronizer 30, and then to the intermediate shaft gear 20, and then to the motor gear 40 through the intermediate shaft gear 20, thereby realizing the charging function of the range extender 1 to charge the motor 4;

[0082] In addition, in this working mode, the intermediate shaft 2 drives the output gear 31 to work, and simultaneously drives the wheel to move through the output gear 31. That is, the motor 4 is connected to the wheel when the range extender 1 is charging through the synchronizing element 3. At this time, the range extender 1 can charge the motor 4 and drive the wheel at the same time.

[0083] Pure electric drive mode: The drive shifter acts on the synchronizer 30, driving the synchronizer 30 to disconnect from the range extender gear 10; the motor 4 works, and the power of the motor 4 is transmitted to the intermediate shaft gear 20 through the motor gear 40, and then to the intermediate shaft 2, and then to the driven gear 7 and differential 6 through the output gear 31, and then drives the vehicle to move.

[0084] Hybrid parallel drive mode of engine 1 and range extender 1:

[0085] The drive shifter acts on the synchronizer 30, driving the synchronizer 30 to move and engage with the range extender gear 10; the range extender 1 operates, and the power of the range extender 1 is transmitted to the synchronizer 30 through the range extender gear 10, and then to the intermediate shaft 2 through the synchronizer 30, and finally to the output gear 32; synchronously, the motor 4 operates, and the power of the motor 4 is transmitted to the intermediate shaft gear 20 through the motor gear 40, and then to the intermediate shaft 2 to act on the output gear 31; both are transmitted to the driven gear 7 and the differential 6 through the output gear 31, realizing the hybrid parallel drive of the engine 1 and the motor 4.

[0086] Example 3:

[0087] Embodiment 3 of this application discloses a range-extended hybrid electric vehicle, which includes the drive mechanism described above.

[0088] The implementation principle of Embodiment 3 of this application is as follows: the drive mechanism is installed on a hybrid vehicle with a power battery to form a range-extended hybrid vehicle.

[0089] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A drive mechanism, characterized in that, include: The range extender assembly includes a range extender (1) and a range extender gear (10) connected to the output shaft of the range extender (1); Hub components, which include: An intermediate shaft (2) is provided in a direction away from the output shaft of the range extender (1); The output gear (31) is either loosely fitted or fixedly mounted on the intermediate shaft (2) and is connected to the vehicle wheel drive. Synchronizing element (3) is connected to the intermediate shaft (2) and located between the range extender gear (10) and the output gear (31). When the output gear (31) is loosely mounted on the intermediate shaft (2), the synchronizing element (3) is selectively synchronized with the range extender gear (10) or the output gear (31). When the output gear (31) is fixedly mounted on the intermediate shaft (2), the synchronizing element (3) is selectively synchronized with the range extender gear (10). The motor (4) has its output shaft connected to the intermediate shaft (2) and is located on the side of the intermediate shaft (2) away from the vehicle wheels.

2. The driving mechanism according to claim 1, characterized in that, The synchronizing element (3) includes a synchronizer (30) and a shifting element connected to the synchronizer (30). When the output gear (31) is loosely mounted on the intermediate shaft (2), the shifting element drives the synchronizer (30) to selectively move toward the range extender gear (10) or the output gear (31) to engage, so that the synchronizing element (3) is selectively synchronized with the range extender gear (10) or the output gear (31) through the synchronizer (30). When the output gear (31) is fixedly mounted on the intermediate shaft (2), the shifting element drives the synchronizer (30) to selectively move toward or away from the range extender gear (10), so that the synchronizing element (3) is selectively synchronized with or disengaged from the range extender gear (10) through the synchronizer (30).

3. The driving mechanism according to claim 1, characterized in that, A half-shaft (5) is connected to the wheels of the vehicle, a differential (6) is connected to the half-shaft (5), and a driven gear (7) is provided to drive the differential (6) to rotate, wherein the output gear (31) meshes with the driven gear (7).

4. The driving mechanism according to claim 3, characterized in that, The reduction ratio from the output gear (31) to the driven gear (7) is 3-4.

5. The driving mechanism according to claim 1, characterized in that, A motor gear (40) is connected to the output shaft of the motor (4), and an intermediate shaft gear (20) is provided on the intermediate shaft (2). The motor gear (40) meshes with the intermediate shaft gear (20).

6. The driving mechanism according to claim 5, characterized in that, The reduction ratio from the motor gear (40) to the intermediate shaft gear (20) is 3-4.

7. The driving mechanism according to claim 1, characterized in that, The intermediate shaft (2) is rotatably connected to the output shaft of the range extender (1).

8. The driving mechanism according to claim 7, characterized in that, The intermediate shaft (2) is provided with a groove (21) at one end opposite to the output shaft of the range extender (1); a rotating shaft (11) is provided at one end opposite to the intermediate shaft (2); the rotating shaft (11) and the side wall of the groove (21) of the intermediate shaft (2) are connected by a bearing.

9. The driving mechanism according to claim 8, characterized in that, Rollers (8) are spaced apart on the rotating shaft (11); the sidewall of the groove (21) is matched with the rollers (8) and is provided with an entry groove (22) at intervals, and a roller groove (23) is provided in communication with the entry groove (22). A limiting block (24) is formed between adjacent entry grooves (22), wherein the limiting block (24) is outwardly arc-shaped on the side facing the roller groove (23).

10. A range-extended hybrid electric vehicle, characterized in that, Includes the drive mechanism as described in any one of claims 1-9.

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