Range-extended driving system and range-extended hybrid vehicle

Abstract

The utility model relates to the technical field of hybrid vehicle driving, in particular to a range extending type driving system and a range extending type hybrid vehicle. The output assembly comprises an intermediate shaft, and the intermediate shaft and an output shaft of the engine are arranged in parallel at an interval; the synchronizing mechanism is arranged on the intermediate shaft, and the synchronizing mechanism is selectively in transmission connection with an output shaft of the engine or wheels of the whole vehicle; and the motor and the engine are located on the same side of the output assembly, and an output shaft of the motor is in transmission connection with the middle shaft. The system has the advantages of being high in integration level and capable of meeting the requirement for small vehicle type space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hybrid vehicle driving, and particularly relates to a range extending driving system and a range extending hybrid vehicle. BACKGROUND

[0002] The range extending hybrid vehicle is equivalent to an ordinary electric vehicle + gasoline generator, that is, taking electric energy as a main power source and fossil energy as an auxiliary power source. When the battery has sufficient electric quantity, the power battery drives the motor to provide the driving power demand of the whole vehicle, and at this time, the engine does not participate in work. When the battery electric quantity is lower than the SOC value (State of Charge, battery charge state, also called residual electric quantity), the engine starts to work. The range extending hybrid vehicle has the advantages of a pure electric vehicle and solves the range anxiety problem of the electric vehicle, and has low emission of electric driving and long endurance of fuel driving, and has good market prospects at the present stage.

[0003] A power system of a hybrid vehicle is disclosed in a related document, comprising an engine, a transmission, a single clutch between the engine and the transmission, and a motor capable of working as an electric motor or a generator, the engine being connected to an input shaft of the transmission through the single clutch, the motor being connected to a motor auxiliary input shaft of the transmission, gears forming a plurality of motor gears being arranged on the motor auxiliary input shaft of the transmission and an output shaft of the transmission, the motor auxiliary input shaft being configured as an intermediate shaft, and a motor shaft of the motor being arranged in spatial parallel with the motor auxiliary input shaft, the output shaft and the input shaft.

[0004] For the related technology in the above, there are defects of low integration, not meeting the space of smaller vehicle models, and narrow vehicle model adaptation range. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the problem of low integration in the prior art and not meeting the space of smaller vehicle models, the purpose of the present application is to provide a range extending driving system and a range extending hybrid vehicle.

[0006] In a first aspect, the range extending driving system provided by the present application adopts the following technical scheme:

[0007] A range extending driving system, comprising: an engine;

[0008] An output assembly, comprising:

[0009] An intermediate shaft, which is arranged in parallel with an output shaft of the engine and is spaced apart from the output shaft of the engine;

[0010] A synchronization mechanism is arranged on the intermediate shaft, wherein the synchronization mechanism is selectively connected with the output shaft of the engine or the vehicle wheel drive; or the synchronization mechanism is selectively connected with the output shaft of the engine, and the intermediate shaft is connected with the vehicle wheel drive.

[0011] A motor is arranged on the same side of the output assembly as the engine, and an output shaft of the motor is connected with the intermediate shaft.

[0012] By adopting the above technical scheme, the intermediate shaft is arranged, and the engine and the motor are arranged on the same side of the intermediate shaft, so that the integration degree is improved, the space of a small vehicle is met, and the interference of a passenger car beam is avoided; further, the synchronization mechanism is arranged on the intermediate shaft, and the synchronization mechanism is selectively connected with the output shaft of the engine or the vehicle wheel drive, so that the range-extended driving and the pure electric driving are realized under the requirement of the small vehicle space, and the non-parking charging is realized in the range-extended driving mode; or the synchronization mechanism is selectively connected with the output shaft of the engine, so that the range-extended driving, the pure electric driving and the parallel driving are realized under the requirement of the small vehicle space.

[0013] Optionally, the synchronization mechanism comprises:

[0014] A first synchronizer is connected with the intermediate shaft;

[0015] An input gear and an output gear, the input gear is connected with the intermediate shaft in a loose manner, and the output gear is connected with the intermediate shaft in a loose manner or is coaxially fixedly connected with the intermediate shaft;

[0016] A first shift part is connected with the first synchronizer, when the output gear is connected with the intermediate shaft in a loose manner, the input gear and the output gear are arranged on two sides of the first synchronizer, and the first shift part is used to drive the first synchronizer to selectively move and combine towards the input gear or the output gear, so that the synchronization mechanism is selectively connected with the output shaft of the engine or the vehicle wheel drive through the first synchronizer; when the output gear is coaxially fixedly connected with the intermediate shaft, the first shift part is used to drive the first synchronizer to selectively move and combine towards the input gear or move away from the input gear, so that the synchronization mechanism is selectively connected with the output shaft of the engine through the first synchronizer.

[0017] By adopting the technical scheme, in one scheme, the first shift element drives the first synchronizer to selectively move towards the input gear or the output gear to be engaged, so as to realize selective transmission connection between the first synchronizer and the engine or the first synchronizer and the vehicle wheels; in another scheme, the first shift element is used to drive the first synchronizer to selectively move towards or away from the input gear to be engaged or disengaged, so as to selectively connect the synchronizing mechanism and the output shaft of the engine through the first synchronizer.

[0018] Optionally, a half shaft is arranged in connection with the vehicle wheels, a differential is arranged in connection with the half shaft, and a driven gear is arranged to drive the differential to rotate, wherein the output gear is in mesh with the driven gear.

[0019] By adopting the technical scheme, the half shaft cooperates with the differential and the driven gear to realize transmission connection between the output gear and the vehicle.

[0020] Optionally, an engine gear is connected to the output shaft of the engine, and the engine gear is in mesh with the input gear.

[0021] By adopting the technical scheme, the engine gear is in mesh with the input gear to realize selective transmission connection between the engine and the first synchronizer.

[0022] Optionally, an engine gear is connected to the output shaft of the engine, and the engine gear is in mesh with the input gear.

[0023] By adopting the technical scheme, the engine gear is in mesh with the input gear to realize selective transmission connection between the engine and the first synchronizer.

[0024] Optionally, the speed reduction ratio of the motor gear to the intermediate shaft gear is 3-4.

[0025] And / or, the speed reduction ratio of the output gear to the driven gear is 3-4.

[0026] By adopting the technical scheme, the speed reduction ratio of the motor gear to the intermediate shaft gear, and / or the speed reduction ratio of the output gear to the driven gear, cooperates to realize speed reduction and torque increase driving of the motor to the vehicle wheels, and cooperates to reduce the layout space perpendicular to the direction of the intermediate shaft, and improve the integration degree.

[0027] Optionally, the input gear is arranged on one side of the first synchronizer close to the intermediate shaft gear.

[0028] By adopting the technical scheme, the differential position is moderate relative to the pair of wheels, the torsion damper is effectively avoided, and the half shaft angle is effectively reduced, thereby facilitating the structure arrangement of vehicle parts.

[0029] Optionally, when the output gear is connected with the intermediate shaft in a loose manner, the output shaft of the engine is further connected with:

[0030] A direct drive gear is connected with the output shaft of the engine in a loose manner and is engaged with the output gear.

[0031] A disengagement assembly is arranged between the engine gear and the direct drive gear or between the engine and the direct drive gear, the disengagement assembly is connected with the output shaft of the engine and is selectively combined with or disengaged from the direct drive gear.

[0032] By adopting the technical scheme, the disengagement assembly is arranged to cooperate with the direct drive gear, the selective transmission connection between the engine and the output gear is realized, the parallel driving of the engine and the motor is realized without affecting the pure electric driving.

[0033] Optionally, the output shaft of the engine is coaxially arranged with the output shaft of the motor.

[0034] By adopting the technical scheme, relative to the traditional offset arrangement mode of the motor and the engine, the center distance between the motor gear and the intermediate shaft gear does not need to be enlarged, the integration degree is improved, and the small vehicle space is met.

[0035] In a second aspect, the range-extending hybrid vehicle provided by the application adopts the following technical scheme:

[0036] The range-extending hybrid vehicle comprises a range-extending driving system.

[0037] By adopting the technical scheme, the range-extending hybrid vehicle comprising the high-integration range-extending driving system is provided.

[0038] In summary, the application has at least one of the following beneficial technical effects:

[0039] 1. The intermediate shaft is arranged, and the engine and the motor are arranged on the same side of the intermediate shaft. Relative to the traditional offset arrangement mode of the motor and the engine, the center distance between the motor gear and the intermediate shaft gear does not need to be enlarged, the integration degree is improved, the small vehicle space is met, and the interference of the passenger car beam is avoided.

[0040] 2. A synchronization mechanism is arranged on the intermediate shaft, and the synchronization mechanism is selectively connected with the output shaft of the engine or the wheels of the vehicle, so that the range-extended driving and pure electric driving are realized under the requirement of small vehicle space, and the non-parking charging is realized in the range-extended driving mode.

[0041] 3. The input gear is arranged on the side of the first synchronizer close to the intermediate shaft gear, so that the position of the differential is relatively moderate with respect to the pair of wheels, the torsion damper is effectively avoided, and the half shaft angle is effectively reduced, facilitating the arrangement of vehicle parts. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 is a structure schematic diagram of the range-extended driving system in the range-extended driving mode of one of the technical solutions of the present application;

[0043] Figure 2 is a structure schematic diagram of the range-extended driving system of one of the technical solutions of the present application;

[0044] Figure 3 is a structure schematic diagram of the range-extended driving system of one of the technical solutions of the present application;

[0045] Figure 4 is a structure schematic diagram of the range-extended driving system of one of the technical solutions of the present application;

[0046] Figure 5 is a structure schematic diagram of the range-extended driving system of one of the technical solutions of the present application.

[0047] BRIEF DESCRIPTION OF DRAWINGS 1. engine; 10, engine gear; 11, direct drive gear; 12, second synchronizer; 13, electromagnetic clutch; 2, intermediate shaft; 20, intermediate shaft gear; 3, synchronization mechanism; 30, first synchronizer; 31, input gear; 32, output gear; 4, motor; 40, motor gear; 5, half shaft; 6, differential; 7, driven gear. DETAILED DESCRIPTION

[0048] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0049] In the description of the present application, it needs to be understood that the orientation description, such as the orientation or position relationship indicated by the upper, lower, front, rear, upper, lower and the like, is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0050] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0051] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0052] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] The following will be described in combination with the accompanying drawings Figure 1 - the accompanying drawings Figure 5 The present application will be further described in detail.

[0054] Embodiment 1:

[0055] Embodiment 1 of the present application discloses a range extending drive system, referring to Figure 1 The range extending drive system comprises an engine 1, an output assembly and a motor 4, wherein the output assembly comprises an intermediate shaft 2 and a synchronization mechanism 3.

[0056] I. The engine 1 can be a small internal combustion engine, which can be a gasoline engine in this embodiment, comprising generating mechanical energy by burning fuel, and the generated mechanical energy is rotated and output through the output shaft of the engine 1.

[0057] II. The intermediate shaft 2 is spaced apart from the output shaft of the engine 1, and the intermediate shaft 2 is arranged parallel to the output shaft of the engine 1.

[0058] III. The synchronization mechanism 3 is arranged on the intermediate shaft 2, and the synchronization mechanism 3 is selectively connected with the output shaft of the engine 1 or the wheels of the whole vehicle, that is, the synchronization mechanism can be in three states, the first state is that the synchronization mechanism 3 is selectively connected with the output shaft of the engine 1, and at this time, the wheels of the whole vehicle are disconnected; the second state is that the synchronization mechanism 3 is selectively connected with the wheels of the whole vehicle, and at this time, the output shaft of the engine 1 is disconnected; the second state is that the synchronization mechanism 3 is in the middle, and is disconnected with the output shaft of the engine 1 or the wheels of the whole vehicle.

[0059] In the embodiment, the synchronization mechanism 3 can include a first synchronizer 30, an input gear 31, an output gear 32 and a first shift piece.

[0060] The first synchronizer 30 is connected with the intermediate shaft 2. In the embodiment, the synchronization of the first synchronizer 30 can be realized by a synchronization ring (including a first synchronization ring and a second synchronization ring), and the speed difference between the two sides of the first synchronizer can be reduced by the speed regulation of the motor 4 to realize synchronization. In one of the embodiments, taking the synchronization realized by the synchronization ring as an example, the first synchronizer 30 includes a spline hub, a slider, a combination sleeve, a first synchronization ring and a second synchronization ring, etc. The spline hub is connected with the intermediate shaft 2 by spline, and then the spline hub can be axially positioned by cooperating with a gasket, a snap ring, etc. to transmit torque and realize the connection of the synchronization piece with the intermediate shaft 2. The slider is embedded in the axial slot of the spline hub and can slide axially along the axial slot. The combination sleeve is sleeved around the spline hub and is axially positioned with the slider to drive the slider to slide axially along the axial slot. The first synchronization ring and the second synchronization ring are arranged on the two sides of the spline hub respectively, and are used to move under the action of the slider to be synchronously engaged with the input gear 31 or the output gear 32 on the corresponding side to realize gear shifting.

[0061] The input gear 31 and the output gear 32 are arranged on the two sides of the first synchronizer 30 respectively and are both connected with the intermediate shaft by sleeve. The input gear 31 and the output gear 32 correspond to the first synchronization ring and the second synchronization ring respectively.

[0062] In one of the embodiments, the input gear 31 and the first synchronization ring are located on the same side of the spline hub, and the output gear 32 and the second synchronization ring are located on the same side of the spline hub.

[0063] The first shift member is connected with the first synchronizer 30 and is used to drive the first synchronizer 30 to selectively move towards the input gear 31 or the output gear 32 to combine, so as to drive the first synchronizer 30 to be in transmission connection with the engine 1 or the wheels of the vehicle. In an embodiment, the first shift member is specifically connected with the combination sleeve of the first synchronizer 30. By fluctuating the first shift member, the combination sleeve can be driven to move the slider towards one side, so as to drive the corresponding synchronizer ring (determined according to the actual arrangement, which is the first synchronizer ring or the second synchronizer ring) of the corresponding side. Taking the first synchronizer ring corresponding to the output gear 32 as an example, the first synchronizer ring moves towards the output gear 32 to realize the synchronous combination of the two, so as to realize the transmission connection of the first synchronizer 30 with the wheels of the vehicle.

[0064] In order to realize the selective transmission connection of the synchronization mechanism 3 with the wheels of the vehicle, the range-extending drive system disclosed in the application further comprises a half shaft 5, a differential 6 and a driven gear 7. The half shaft 5 is arranged in transmission connection with the wheels of the vehicle and drives the wheels of the vehicle to rotate, so as to drive the vehicle to move. The differential 6 is arranged in transmission connection with the half shaft 5 and is used to control the rotation of the left and right wheels at different speeds. The driven gear 7 is arranged to drive the differential 6 to rotate. The output gear 32 is in meshing transmission connection with the driven gear 7, so as to realize the rotation of the output gear 32 through the driven gear 7, the differential 6 and the half shaft 5 in sequence to drive the wheels of the vehicle to move.

[0065] In order to realize the selective transmission connection of the synchronization mechanism 3 with the output shaft of the motor 4, the output shaft of the engine 1 is connected with an engine gear 10. The engine gear 10 is in meshing transmission connection with the input gear 31 to realize the operation of the engine 1. When the first synchronizer 30 is selectively combined with the input gear 31, the power output of the engine 1 is transmitted to the intermediate shaft 2 through the input gear 31 and the first synchronizer 30.

[0066] IV. The motor 4 is arranged on the same side of the output assembly as the engine 1. The output shaft of the motor 4 is in transmission connection with the intermediate shaft 2.

[0067] In the embodiment, the motor 4 and the engine 1 are arranged on the same side of the wheels of the vehicle (specifically, the front wheels) of the intermediate shaft 2. Since the motor 4 and the engine 1 are arranged in transmission connection with the half shaft 5, they are arranged oppositely, which can effectively avoid the interference of the beam of the passenger car (including the beam connecting the left and right wheels and the beam connecting the longitudinal beams) and reduce the space of the transmission connection. Further, in order to improve the compactness of the layout, in an embodiment, the output shaft of the engine 1 and the output shaft of the motor 4 can be arranged coaxially.

[0068] In order to realize the transmission connection between the output shaft of the motor 4 and the intermediate shaft 2, a motor gear 40 is arranged on the output shaft of the motor 4, and an intermediate shaft gear 20 is arranged on the intermediate shaft 2, the motor gear 40 is engaged with the intermediate shaft gear 20, so that the output shaft of the motor 4 is in transmission connection with the intermediate shaft 2. When the first synchronizer 30 is selectively combined with the input gear 31, the power output of the engine 1 is transmitted to the intermediate shaft 2 through the input gear 31 and the first synchronizer 30, and further, the charging function is realized through the intermediate shaft 2, the intermediate shaft gear 20, the motor gear.

[0069] The motor 4 drives the wheels of the whole vehicle in a deceleration and torque increasing mode, and the engine 1 drives the motor 4 in a speed increasing and power generation mode. In order to realize the above functions, the speed reduction ratio of the output gear 32 to the driven gear 7 is 3-4, and the speed reduction ratio of the motor gear 40 to the intermediate shaft gear 20 is 3-4, which together realize the effect of deceleration and torque increase.

[0070] For the above scheme, the input gear 31 and the output gear 32 are arranged on the two sides of the first synchronizer 30, including two schemes:

[0071] Scheme one: refer to Figure 1 , the input gear 31 is located on the side of the first synchronizer 30 away from the intermediate shaft gear 20, and the output gear 32 is located on the side of the first synchronizer 30 close to the intermediate shaft gear 20.

[0072] Scheme two: refer to Figure 2 , the input gear 31 is located on the side of the first synchronizer 30 close to the intermediate shaft gear 20, and the output gear 32 is located on the side of the first synchronizer 30 away from the intermediate shaft gear 20. Compared with the scheme of Figure 1 , this arrangement can effectively avoid the arrangement of the torsion damper, and at the same time, after moving the position, the position of the differential 6 is relatively moderate with respect to a pair of wheels, which can effectively reduce the angle of the half shaft 5, and facilitate the structure arrangement of the whole vehicle parts.

[0073] The implementation principle of the embodiment 1 of the application is:

[0074] Extended driving mode: through the synchronous mechanism 3, the first shifting part acts on the first synchronizer 30 to drive the first synchronizer 30 to move and combine with the input gear 31, at this time, the first synchronizer 30 is disconnected with the output gear 32; the engine 1 works, the power of the engine 1 is transmitted to the input gear 31 on the intermediate shaft 2 through the engine gear 10, and then is transmitted to the intermediate shaft 2 through the first synchronizer 30, and then is transmitted to the intermediate shaft gear 20, and then is transmitted to the motor gear 40 through the intermediate shaft gear 20, so as to realize the charging function of the engine 1 and charge the motor 4;

[0075] In addition, in the working mode, the intermediate shaft 2 is disconnected with the output gear 32, the rotation of the intermediate shaft 2 does not drive the output gear 32 to work, so that the wheels are not driven through the output gear 32, that is, the motor 4 is disconnected with the wheels during the charging of the engine 1 through the synchronous mechanism 3, and the gear driving during the charging of the engine 1 is avoided. Further, the above function is realized, so that the vehicle can run during the charging, that is, the charging function is realized during the running.

[0076] Pure electric driving mode: through the synchronous mechanism 3, the first shift member drives the first synchronizer 30 to move and combine with the output gear 32, at this time, the first synchronizer 30 is disconnected with the input gear 31; the motor 4 works, the power of the motor 4 is transmitted to the intermediate shaft gear 20 through the motor gear 40, and then transmitted to the intermediate shaft 2, and then transmitted to the output gear 32 through the first synchronizer 30, and then transmitted to the driven gear 7 and the differential 6 through the output gear 32, and then drives the vehicle to run.

[0077] Embodiment 2

[0078] Embodiment 2 of the present application discloses a range extending driving system, referring to Figure 3 The range extending driving system is the same as scheme two, except that the output shaft of the engine 1 is further connected with a direct drive gear 11 and a disengagement assembly in the direction away from the engine 1.

[0079] The direct drive gear 11 is connected with the output shaft of the engine 1 in a loose sleeve manner, and is engaged with the output gear. In this embodiment, the direct drive gear 11 is engaged with the output gear 32, that is, the rotation of the direct drive gear 11 drives the rotation of the output gear 32, but the direct drive gear 11 is not directly connected with the output shaft of the engine 1, that is, the engine 1 does not directly drive the rotation of the direct drive gear 11.

[0080] The disengagement assembly is arranged between the engine gear 10 and the direct drive gear 11, or the disengagement assembly is arranged between the engine 1 and the direct drive gear 11.

[0081] The disengagement assembly is connected with the output shaft of the engine 1, and is selectively combined with or disconnected from the direct drive gear 11. In this embodiment, the disengagement assembly can be directly connected with the output shaft of the engine 1, or indirectly connected. The disengagement assembly can be one of a clutch and a synchronizer, when it is a clutch, it can be an electromagnetic clutch 13, or a non-electromagnetic clutch, specifically a friction clutch.

[0082] In one embodiment, referring to Figure 3 Taking the synchronizer as an example, the disengagement assembly includes a second shift member and a second synchronizer.

[0083] The second synchronizer 12 is connected with the output shaft of the engine 1. In the embodiment, the second synchronizer 12 can be connected with the output shaft of the engine 1 by spline connection, and then be axially positioned by cooperating with a washer, a snap ring or the like, for torque transmission.

[0084] The second shifting member is connected with the second synchronizer 12, for driving the second synchronizer 12 to selectively approach or move away from the direct-drive gear 11, so that the second synchronizer 12 is selectively combined with or separated from the direct-drive gear 11. In the embodiment, the second shifting member drives the second synchronizer 12 to selectively approach the direct-drive gear 11, so that the second synchronizer 12 is combined with the direct-drive gear 11; or the second shifting member drives the second synchronizer 12 to move away from the direct-drive gear 11, so that the second synchronizer 12 is separated from the direct-drive gear 11.

[0085] In another embodiment, referring to Figure 4 The disengagement assembly is taken as a clutch, and specifically taken as the electromagnetic clutch 13 as an example. One end of the electromagnetic clutch 13 close to the engine gear 10 can be connected with the engine gear 10, and the other end is selectively combined with or separated from the direct-drive gear 11; or one end of the electromagnetic clutch 13 close to the engine gear 10 can be connected with the output shaft of the engine 1, and the other end is selectively combined with or separated from the direct-drive gear 11.

[0086] The disengagement assembly is taken as a synchronizer as an example. The implementation principle of the embodiment 2 of the application is as follows:

[0087] (1) Extended-range driving mode: same as the embodiment 1. At this time, the second synchronizer 1211 moves away from the direct-drive gear 11 under the action of the second shifting member, so that the second synchronizer 12 is separated from the direct-drive gear 11. That is, the engine 1 works to drive the second synchronizer 12 to work, but does not drive the direct-drive gear 11 to work.

[0088] (2) Pure electric driving mode: same as the embodiment 1. At this time, the second synchronizer 12 moves away from the direct-drive gear 11 under the action of the second shifting member, so that the second synchronizer 12 is separated from the direct-drive gear 11. That is, the engine 1 works to drive the second synchronizer 12 to work, but does not drive the direct-drive gear 11 to work.

[0089] (3) Engine 1 and motor 4 hybrid parallel driving mode:

[0090] For the synchronization mechanism 3, the first shift element is driven to act on the first synchronizer 30, and the first synchronizer 30 is driven to move and combine with the output gear 32, at this time, the first synchronizer 30 is in a disconnected relationship with the input gear 31; the motor 4 works, 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 output gear 32 through the action of the first synchronizer 30, and then to the driven gear 7 and the differential 6 through the output gear 32, realizing the motor driving the vehicle to run;

[0091] Synchronization, the second synchronizer 12 is close to the direct drive gear 11 under the action of the second shift element, so that the second synchronizer 12 combines with the direct drive gear 11, that is, the engine 1 works to drive the second synchronizer 12 to work, and the direct drive gear 11 works through the second synchronizer 12, and the direct drive gear 11 is meshed with the output gear 32, realizing the engine 1 sequentially transmitting power to the driven gear 7 and the differential 6 through the second synchronizer 12, the direct drive gear 11 and the output gear 32, and realizing the engine 1 driving the vehicle to run.

[0092] (4) Engine 1 direct drive mode:

[0093] For the synchronization mechanism 3, the first shift element is driven to act on the first synchronizer 30, and the first synchronizer 30 is driven to move and combine with the output gear 32, at this time, the first synchronizer 30 is in a disconnected relationship with the input gear 31; synchronization, the second synchronizer 12 is close to the direct drive gear 11 under the action of the second shift element, so that the second synchronizer 12 combines with the direct drive gear 11, that is, the engine 1 works to drive the second synchronizer 12 to work, and the direct drive gear 11 works through the second synchronizer 12, and the direct drive gear 11 is meshed with the output gear 32, realizing the engine 1 sequentially transmitting power to the driven gear 7 and the differential 6 through the second synchronizer 12, the direct drive gear 11 and the output gear 32, and realizing the engine 1 driving the vehicle to run.

[0094] At the same time, it also needs to be explained that in the hybrid power parallel driving mode and the direct driving mode, the motor 4 can also be used as a starter to start the engine 1.

[0095] In summary, Figure 1 And Figure 2 The corresponding extended range driving system can realize the extended range driving mode and the pure electric driving mode. Compared with Figure 1 And Figure 2 , Figure 3 And Figure 4 The corresponding extended range driving system increases the direct drive gear 11 on the output shaft of the engine 1, cooperates with the setting of the disengagement assembly Figure 3 Corresponding to the synchronizer, Figure 4 The electromagnetic clutch 13), so that Figure 3And Figure 4 The corresponding extended-range drive system can also realize an engine direct drive mode, a hybrid parallel drive mode.

[0096] Embodiment 3

[0097] Embodiment 3 of the present application discloses an extended-range drive system, which refers to Figure 5 , the extended-range drive system is the same as that in Embodiment 1, and is applicable to Scheme 1 and Scheme 2, except that the output gear (32) is coaxially connected with the intermediate shaft (2) instead of being connected in a loose manner.

[0098] On this basis, the first shift element drives the first synchronizer (30) to selectively move towards or away from the input gear (31) to make the synchronization mechanism (3) selectively connected with the output shaft of the engine (1) through the first synchronizer (30); the first synchronizer does not have a connection relationship with the output gear.

[0099] In one embodiment, the synchronizer 30 can be located on the side of the input gear 31 close to the output gear 32, or on the side of the input gear 31 away from the output gear 32.

[0100] The implementation principle of Embodiment 3 of the present application is as follows:

[0101] Extended-range drive mode: through the synchronization mechanism 3, the first shift element acts on the first synchronizer 30 to drive the first synchronizer 30 to move and connect with the input gear 31; the engine 1 works, and the power of the engine 1 is transmitted to the input gear 31 on the intermediate shaft 2 through the engine gear 10, and then to the intermediate shaft 2 through the first synchronizer 30, and then to the intermediate shaft gear 20, and then to the motor gear 40 through the intermediate shaft gear 20, so as to realize the charging function of the engine 1 and charge the motor 4.

[0102] At the same time, in this working mode, the intermediate shaft 2 drives the output gear 32 to work, so as to drive the wheels to move through the output gear 32, that is, the motor 4 is synchronously connected with the wheels when the engine 1 is charged through the synchronization mechanism 3, at this time, the engine 1 can charge the motor 4 and drive the wheels at the same time.

[0103] Pure electric drive mode: through the synchronization mechanism 3, the first shift element acts on the first synchronizer 30 to drive the first synchronizer 30 to move and disconnect with the input gear 31, at this time, the first synchronizer 30 and the input gear 31 are disconnected; 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 to act on the output gear 32, and then to the driven gear 7 and the differential 6 through the output gear 32, and then to drive the vehicle to move.

[0104] Engine 1 and motor 4 hybrid parallel driving mode:

[0105] For the synchronization mechanism 3, the first shift member acts on the first synchronizer 30, and the first synchronizer 30 is driven to be in a combined relationship with the input gear 31. The engine 1 works, and the power of the engine 1 is transmitted to the input gear 31 on the intermediate shaft 2 through the engine gear 10, and then to the intermediate shaft 2 through the first synchronizer 30, and then to the output gear 32.

[0106] Synchronization, motor 4 works, 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 output gear 32;

[0107] Both are transmitted to the driven gear 7 and the differential 6 through the output gear 32, so as to realize the engine 1 and the motor 4 hybrid parallel driving.

[0108] Embodiment 4:

[0109] The embodiment 4 of the present application discloses a range extending hybrid vehicle, and the range extending hybrid vehicle comprises the range extending drive system.

[0110] The implementation principle of the embodiment 4 of the present application is that the range extending drive system is installed on the hybrid vehicle with a power battery to form the range extending hybrid vehicle.

[0111] The embodiments of the specific embodiment are the preferred embodiments of the present application, and are not limited to the protection scope of the present application. The same parts are indicated by the same reference numerals. Therefore, equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A range extending drive system, characterized by, The application relates to an engine (1) and an output assembly comprising: an intermediate shaft (2) arranged in parallel with the output shaft of the engine (1); a synchronization mechanism (3) arranged on the intermediate shaft (2), wherein the synchronization mechanism (3) is selectively connected with the output shaft of the engine (1) or the wheels of the vehicle; or the synchronization mechanism (3) is selectively connected with the output shaft of the engine (1), and the intermediate shaft (2) is connected with the wheels of the vehicle; an electric motor (4) arranged on the same side of the engine (1) as the output assembly, and the output shaft of the electric motor (4) is connected with the intermediate shaft (2). The synchronization mechanism (3) comprises: a first synchronizer (30) connected with the intermediate shaft (2); 2. The range extended drive system of claim 1, wherein, an input gear (31) and an output gear (32), wherein the input gear (31) is connected with the intermediate shaft (2) in a loose manner, and the output gear (32) is connected with the intermediate shaft (2) in a loose manner or in a coaxial fixed manner; a first shifting part connected with the first synchronizer (30), wherein when the output gear (32) is connected with the intermediate shaft (2) in a loose manner, the input gear (31) and the output gear (32) are arranged on the two sides of the first synchronizer (30) respectively, and the first shifting part is used for driving the first synchronizer (30) to selectively move and combine towards the input gear (31) or the output gear (32), so that the synchronization mechanism (3) is selectively connected with the output shaft of the engine (1) or the wheels of the vehicle through the first synchronizer (30); when the output gear (32) is connected with the intermediate shaft (2) in a coaxial fixed manner, the first shifting part is used for driving the first synchronizer (30) to selectively move and combine towards the input gear (31) or move away from the input gear (31), so that the synchronization mechanism (3) is selectively connected with the output shaft of the engine (1) through the first synchronizer (30). A half shaft (5) is arranged in connection with the wheels of the vehicle, a differential (6) is arranged in connection with the half shaft (5), and a driven gear (7) is arranged for driving the differential (6) to rotate, wherein the output gear (32) is engaged with the driven gear (7). An engine gear (10) is arranged on the output shaft of the engine (1), and the engine gear (10) is engaged with the input gear (31).

3. The range extended drive system of claim 2, wherein, An electric motor gear (40) is arranged on the output shaft of the electric motor (4), an intermediate shaft gear (20) is arranged on the intermediate shaft (2), and the electric motor gear (40) is engaged with the intermediate shaft gear (20), so that the output shaft of the electric motor (4) is connected with the intermediate shaft (2) in a transmission manner.

4. The range extended drive system of claim 3, wherein, The reduction ratio of the electric motor gear (40) to the intermediate shaft gear (20) is 3-4.

5. The range extended drive system of claim 3, wherein, The reduction ratio of the output gear (32) to the driven gear (7) is 3-4.

6. The range extended drive system of claim 5, wherein, The input gear (31) is arranged on the side of the first synchronizer (30) close to the intermediate shaft gear (20). ​ 7. The range extended drive system of claim 5, wherein, ​ 8. The range extended drive system of claim 4, wherein, When the output gear (32) is connected with the intermediate shaft (2) in loose fit, the output shaft of the engine (1) is further connected in the direction away from the engine with: a direct drive gear (11) connected with the output shaft of the engine (1) in loose fit and engaged with the output gear (32); a disengaging assembly arranged between the engine gear (10) and the direct drive gear (11) or arranged between the engine (1) and the direct drive gear (11), the disengaging assembly being connected with the output shaft of the engine (1) and selectively combined with or disengaged from the direct drive gear (11).

9. The range extended drive system of claim 1, wherein, The output shaft of the engine (1) is coaxially arranged with the output shaft of the motor (4).

10. A range extended hybrid vehicle, characterized by, The range extending drive system comprises the range extending drive system according to any one of claims 1-9.

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