CN111152642A - Hybrid transmission structure based on automobile CVT - Google Patents
Hybrid transmission structure based on automobile CVT Download PDFInfo
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- CN111152642A CN111152642A CN202010005298.0A CN202010005298A CN111152642A CN 111152642 A CN111152642 A CN 111152642A CN 202010005298 A CN202010005298 A CN 202010005298A CN 111152642 A CN111152642 A CN 111152642A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
- B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Arrangement Of Transmissions (AREA)
Abstract
The invention provides a hybrid transmission structure based on an automobile CVT (continuously variable transmission), and belongs to the technical field of hybrid automobiles. The hybrid transmission structure solves the technical problem that a motor in the hybrid transmission structure of the existing CVT is difficult to participate in transmission when an automobile runs at a high speed. This thoughtlessly move transmission structure based on car CVT includes can with the equal joint of driving pulley, transmission shaft and sun gear links firmly the clutch, the coaxial reduction gear that has linked firmly on the driven pulley, it is connected with the idler still to rotate on the casing, output gear with reduction gear simultaneously with the idler meshing. The invention can make the motor with low rotating speed meet the requirements of automobile starting and even light mixing high-speed driving at the same time.
Description
Technical Field
The invention belongs to the technical field of automobile transmission, and relates to a hybrid transmission structure based on an automobile CVT.
Background
With the increasing development of energy crisis and the increasing deterioration of ecological environment, energy conservation and environmental protection become two major topics of major concern in the current international society. Relevant policies are issued by governments of various countries, and research and development of new energy vehicles are encouraged and promoted. Among these, fuel cell vehicles and pure electric vehicles are difficult to popularize in a short period of time for technical reasons. Therefore, hybrid vehicles as transition products are increasingly receiving attention. As the most effective energy-saving automobile scheme at present, a power assembly system of a hybrid electric vehicle has better fuel economy, so that the hybrid electric vehicle is favored by various manufacturers.
Chinese patent No. CN208198094U discloses a power transmission system for a hybrid vehicle, which is based on a CVT transmission to perform hybrid transmission, and a driving motor drives through an independent transmission path while avoiding the CVT, so as to meet the pure electric demand of the vehicle.
The hybrid structure still has the following defects: when the automobile enters a high-speed running state, the rotating speed of a common motor is difficult to meet the driving requirement, and the torque can be transmitted only by depending on the engine. To solve the above problems, one of ordinary skill in the art can easily consider: 1. assembling and using a special motor with high rotating speed; 2. an additional motor and an independent speed-increasing transmission path are arranged and output together with the engine, and the motor is switched to work under different working conditions; 3. the diameter proportion of the first driving wheel and the second driving wheel is increased, and the speed increasing effect of the motor driving path is achieved.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a hybrid transmission structure based on an automobile CVT, and the technical problems to be solved by the invention are as follows: how to expand the application range of the motor participating in the automobile driving in the hybrid transmission structure.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a thoughtlessly move transmission structure based on car CVT, includes the casing and is used for transmitting the transmission shaft of engine power, be equipped with motor, ring gear, output gear, driving pulley and driven pulley in the casing, the transmission shaft with output gear reaches the driving pulley coaxial arrangement, the coaxial sun gear that has linked firmly on the rotor of motor has linked firmly the planet carrier on this output gear, rotate on the planet carrier be connected with simultaneously with the ring gear with sun gear meshed's planetary gear, its characterized in that, thoughtlessly move transmission structure still including can with the equal joint clutch that links firmly of driving pulley, transmission shaft and sun gear, coaxial gear reduction that has linked firmly on the driven pulley, still rotate in the casing and be connected with the idler, output gear with gear simultaneously with the idler meshing.
The motor, the whole CVT and the transmission mechanism are protected by the shell, the transmission shaft can be connected with the engine to transmit power of the engine, the driving belt wheel is an input wheel of the CVT, the driven belt wheel is an output wheel of the CVT, transmission can be achieved between the driving belt wheel and the driven belt wheel through a steel belt, when an automobile starts, the inner gear ring and the shell are fixedly connected with a rotor of the motor to rotate to drive the sun gear to rotate, the sun gear drives the planetary gear to rotate along the inner edge of the inner gear ring, the whole planet carrier and the output gear are driven to rotate in the same direction of speed reduction and torque increase, the output gear avoids the driving belt wheel and the driven belt wheel to drive the automobile to run through the independent transmission mechanism, the motor is driven to start the automobile, and the phenomenon that. By arranging the clutch which can fixedly connect the driving belt wheel, the transmission shaft and the sun gear and arranging the reduction gear which is coaxially and fixedly connected on the driven belt wheel, the output gear and the reduction gear are simultaneously meshed with the idle gear arranged between the output gear and the reduction gear, thus, after the automobile is started, the driving belt wheel has a certain initial speed under the transmission action of the idle wheel and the reduction gear, the engine can be started, the inner gear ring and the shell are separated, the clutch is controlled to be connected, the driving belt wheel, the transmission shaft and the sun gear have certain speed and consistent steering when the clutch is connected, can reduce the joint pause and frustration, the rotating speeds of the engine and the motor are the same, and the engine and the motor can be smoothly switched to a common working state, because the power torque is output through the CVT as a speed increasing process, the requirement can be met only by matching the rotating speed range of the motor with the rotating speed range of the engine, therefore, the motor with low rotating speed can meet the requirements of automobile starting and even light mixing high-speed driving at the same time.
In the hybrid transmission structure based on the automobile CVT, the clutch comprises an engaging and disengaging unit and a clutch unit which are independent, the engaging and disengaging unit can fixedly connect the sun gear and the driving pulley, and the clutch unit can fixedly connect the sun gear and the transmission shaft. The clutch comprises the first clutch and the second clutch, so that when the single motor is difficult to meet the starting requirement of large torque, the brake can be engaged and the second clutch can be controlled to be engaged, the engine and the motor jointly participate in the power output of automobile starting, the applicability is improved, and after the automobile is started, the brake can be separated, the first clutch can be engaged, and the first clutch is connected with the CVT to switch the output mode.
In the above-described hybrid transmission structure based on the automobile CVT, the diameter of the output gear is smaller than the diameter of the reduction gear. The diameter of the output gear is smaller than that of the reduction gear, so that the process of reducing the speed and increasing the torque from the output gear to the reduction gear in the starting stage is realized, the starting requirement of an automobile can be met even if the selected motor torque specification is small, and the requirement on the motor is further reduced.
In the hybrid transmission structure based on the CVT of the vehicle, the center of the end surface of the driving pulley has an input shaft extending in the axial direction, and the input shaft penetrates the output gear and is connected to the clutch. The input shaft is fixedly arranged at the center of the end face of the driving belt wheel, and the input shaft penetrates through the output gear and is connected with the clutch, so that layout interference can be avoided, the position arrangement of the clutch is facilitated, and the structure compactness is ensured.
In the hybrid transmission structure based on the automobile CVT, the clutch is located in the inner cavity of the motor. The clutch is arranged in the inner cavity of the motor, so that the space utilization rate can be improved, and the compactness is improved.
In the hybrid transmission structure based on the automobile CVT, the planetary gears are provided in a plurality and are uniformly arranged around the periphery of the sun gear. Through setting up a plurality of planetary gear and arranging in sun gear's periphery, can effectively avoid transmission unbalance loading like this, improve power transmission's stability.
In the hybrid transmission structure based on the automobile CVT, a brake capable of fixedly connecting the inner gear ring and the housing in an engagement manner is arranged between the inner gear ring and the housing. The brake is arranged between the inner gear ring and the shell, so that the engagement and disengagement states of the inner gear ring and the shell can be controlled through the brake, and the mode switching effect is stable.
Compared with the prior art, the invention has the following advantages:
this thoughtlessly move transmission structure based on car CVT can all joint the clutch that links firmly with driving pulley, transmission shaft and sun gear through setting up, and set up the reducing gear that coaxial linking firmly on driven pulley, make output gear and reducing gear mesh with the idler of arranging between the two simultaneously, driving pulley, transmission shaft and sun gear all have a constant speed and turn to unanimously when the clutch is jointed, can reduce the joint and pause and feel, the rotational speed of engine and motor is the same and is convenient for smoothly switch to the common operating condition, even under the high-speed driving state this moment, because power torque passes through CVT output for the acceleration process, therefore only need the rotational speed scope of motor and the rotational speed scope of engine be equal can satisfy the requirement, thereby make the motor of low rotational speed can satisfy the car simultaneously and start even the demand that the high speed of light mixing goes.
Drawings
Fig. 1 is a schematic structural arrangement diagram of the first embodiment.
Fig. 2 is a schematic structural arrangement diagram of the second embodiment.
In the figure, 1, a housing; 2. a drive shaft; 3. a motor; 4. an inner gear ring; 5. an output gear;
6. a driving pulley; 61. an input shaft;
7. a driven pulley; 8. a sun gear; 9. a planet carrier; 10. a planetary gear; 11. a brake;
12. a clutch; 121. combining the components in a separating way; 122. a second clutch is engaged;
13. a reduction gear; 14. an idler pulley.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
The first embodiment is as follows:
as shown in figure 1, the hybrid transmission structure based on the automobile CVT comprises a shell 1 and a transmission shaft 2 used for transmitting the power of an engine, wherein a motor 3, an inner gear ring 4, an output gear 5, a driving pulley 6 and a driven pulley 7 are arranged in the shell 1, the transmission shaft 2 and the driving pulley 6 are coaxially arranged, a sun gear 8 is coaxially fixedly connected to a rotor of the motor 3, the sun gear 8 and the inner gear ring 4 are coaxially arranged, the output gear 5 and the driving pulley 6 are coaxially arranged, a planet carrier 9 is fixedly connected to the output gear 5, a planet gear 10 is rotatably connected to the planet carrier 9, the planet gear 10 is simultaneously meshed with the inner gear ring 4 and the sun gear 8, a brake 11 capable of fixedly connecting the inner gear ring 4 with the shell 1 is arranged between the inner gear ring 4 and the shell 1, and a clutch 12 capable of fixedly connecting the driving pulley 6, the transmission shaft 2 and the sun gear, the driven belt wheel 7 is coaxially and fixedly connected with a reduction gear 13, an idle gear 14 is also rotatably connected in the shell 1, and the output gear 5 and the reduction gear 13 are simultaneously meshed with the idle gear 14. The shell 1 protects the motor 3 and the whole CVT and the transmission mechanism, the transmission shaft 2 can be connected with the engine to transmit the power of the engine, the driving belt wheel 6 is the input wheel of the CVT, the driven belt wheel 7 is the output wheel of the CVT, the driving belt wheel 6 and the driven belt wheel 7 realize transmission through a steel belt, when the automobile starts, the brake 11 works to fixedly connect the inner gear ring 4 with the shell 1, the rotor of the motor 3 rotates to drive the sun gear 8 to rotate, the sun gear 8 drives the planet gear 10 to rotate along the inner edge of the inner gear ring 4, thus, the whole planet carrier 9 and the output gear 5 are driven to rotate in the same direction of speed reduction and torque increase, the output gear 5 avoids the driving belt wheel 6 and the driven belt wheel 7 and drives the vehicle to run through an independent transmission mechanism, therefore, the motor 3 drives the automobile to start, and the phenomenon that the steel belt is broken due to overlarge torque when the CVT starts is effectively avoided. By arranging the clutch 12 which can connect and fixedly connect the driving pulley 6, the transmission shaft 2 and the sun gear 8 and arranging the reduction gear 13 which is coaxially and fixedly connected on the driven pulley 7, the output gear 5 and the reduction gear 13 are simultaneously meshed with the idle gear 14 arranged between the output gear and the reduction gear 13, so that the driving pulley 6 has a certain initial speed under the transmission action of the idle gear 14 and the reduction gear 13 after the automobile starts, an engine can be started, the brake 11 is separated, the clutch 12 is controlled to be connected, the driving pulley 6, the transmission shaft 2 and the sun gear 8 have certain speeds and rotate in the same direction when the clutch 12 is connected, the connection pause feeling can be reduced, the rotating speeds of the engine and the motor 3 are the same, the engine and the motor are conveniently and smoothly switched to a common working state, at the moment, even in a high-speed driving state, because the power torque is output to a speed increasing process through the CVT, the rotating speed range, therefore, the motor 3 with low rotating speed can meet the requirements of automobile starting and even light mixing high-speed driving at the same time. Further, the diameter of the output gear 5 is smaller than that of the reduction gear 13. By setting the diameter of the output gear 5 to be smaller than that of the reduction gear 13, the process that the output gear 5 is transmitted to the reduction gear 13 to reduce the speed and increase the torque in the starting stage is also adopted, so that the starting requirement of the automobile can be met even if the selected motor 3 has a smaller torque specification, and the requirement on the motor 3 is further reduced. Preferably, the drive pulley 6 has an input shaft 61 extending in the axial direction at the center of the end surface thereof, and the input shaft 61 penetrates the output gear 5 and is connected to the clutch 12. The input shaft 61 is fixedly arranged at the center of the end face of the driving belt wheel 6, so that the input shaft 61 penetrates through the output gear 5 and is connected with the clutch 12, the layout interference can be avoided, the position arrangement of the clutch 12 is facilitated, and the structure compactness is ensured. The clutch 12 is located in the interior of the motor 3. By providing the clutch 12 in the inner cavity of the motor 3, space utilization can be improved, and compactness can be improved. The planetary gears 10 are provided in plural and are arranged uniformly around the periphery of the sun gear 8. Through setting up a plurality of planetary gear 10 and arranging in sun gear 8's periphery, can effectively avoid transmission unbalance loading like this, improve power transmission's stability.
Example two:
as shown in fig. 2, the present embodiment is substantially the same as the first embodiment, except that: the clutch 12 comprises a first clutch 121 and a second clutch 122 which are independent, wherein the first clutch 121 can fixedly connect the sun gear 8 with the driving pulley 6 in an engaging manner, and the second clutch 122 can fixedly connect the sun gear 8 with the transmission shaft 2 in an engaging manner. By arranging the clutch 12 to comprise the first clutch 121 and the second clutch 122, when the single motor 3 is difficult to meet the starting requirement of large torque, the brake 11 can be engaged and the second clutch 122 can be controlled to be engaged, so that the engine and the motor 3 jointly participate in the power output of the automobile starting, the applicability is improved, and after the starting, the brake 11 can be disengaged and the first clutch 121 is engaged, so that the output mode is connected with the CVT for switching.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (7)
1. A hybrid transmission structure based on an automobile CVT comprises a shell (1) and a transmission shaft (2) used for transmitting power of an engine, wherein the shell (1) is internally provided with a motor (3), an inner gear ring (4), an output gear (5), a driving pulley (6) and a driven pulley (7), the transmission shaft (2) is coaxially arranged with the output gear (5) and the driving pulley (6), a rotor of the motor (3) is coaxially and fixedly connected with a sun gear (8), the output gear (5) is fixedly connected with a planet carrier (9), the planet carrier (9) is rotatably connected with a planet gear (10) which is simultaneously engaged with the inner gear ring (4) and the sun gear (8), and the hybrid transmission structure is characterized by further comprising a clutch (12) which can fixedly connect the driving pulley (6), the transmission shaft (2) and the sun gear (8), driven pulley (7) go up the coaxial reduction gear (13) that has linked firmly, go up still to rotate in casing (1) and be connected with idler (14), output gear (5) with reduction gear (13) simultaneously with idler (14) meshing.
2. The automotive CVT-based hybrid transmission structure according to claim 1, wherein the clutch (12) includes an off-going one (121) and an on-coming two (122) that are independent, the off-going one (121) being capable of engagingly securing the sun gear (8) and the driving pulley (6), and the on-coming two (122) being capable of engagingly securing the sun gear (8) and the transmission shaft (2).
3. A hybrid transmission construction based on an automotive CVT according to claim 1 characterized in that the diameter of the output gear (5) is smaller than the diameter of the reduction gear (13).
4. A hybrid transmission construction based on an automotive CVT according to claim 1 or 2 or 3 characterized in that the center of the end face of the driving pulley (6) has an input shaft (61) extending in the axial direction, the input shaft (61) penetrating the output gear (5) and being connected to the clutch (12).
5. Hybrid transmission architecture based on an automotive CVT according to claim 4, characterized in that the clutch (12) is located in the inner cavity of the electric machine (3).
6. A hybrid transmission construction based on an automotive CVT according to claim 1 or 2 or 3 characterized in that the planetary gears (10) are several and evenly arranged around the periphery of the sun gear (8).
7. The automotive CVT-based hybrid transmission structure according to claim 1, 2 or 3 characterized in that a brake (11) capable of fixedly engaging the ring gear (4) with the housing (1) is provided between the ring gear (4) and the housing (1).
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| CN111152642B (en) | 2021-04-16 |
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