CN112848872A - Low-cost hybrid power system convenient for adjusting vehicle speed and driving method thereof - Google Patents
Low-cost hybrid power system convenient for adjusting vehicle speed and driving method thereof Download PDFInfo
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- CN112848872A CN112848872A CN202110258918.6A CN202110258918A CN112848872A CN 112848872 A CN112848872 A CN 112848872A CN 202110258918 A CN202110258918 A CN 202110258918A CN 112848872 A CN112848872 A CN 112848872A
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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
- B60K6/38—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
- B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
- B60K6/54—Transmission for changing ratio
- B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
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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
- B60K2006/381—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 characterized by driveline brakes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The utility model provides a low-cost hybrid power system convenient to speed of a motor vehicle is adjusted, includes power input end and power take off end, power input end is provided with first power supply, and this hybrid power system still includes first clutch, first epicyclic train, second epicyclic train, first stopper and second stopper. The hybrid power system designed by the invention adopts the motor and the two planet rows, and the two planet rows share the gear ring, so that the hybrid power system has the advantages of simple structure, convenience in processing and low cost; the whole framework realizes the adjustment of various vehicle speed working conditions of the heavy dump truck through the two clutches and the two brakes, the system can be provided with three gears, namely a low-speed climbing gear, a medium-speed direct gear and a high-speed gear, the gears are convenient to adjust, and the optimal performance suitable for the heavy dump truck is achieved by utilizing the characteristics of an engine and a motor and the speed change of a secondary planetary gear.
Description
Technical Field
The invention belongs to the field of hybrid power system development, and particularly relates to a low-cost hybrid power system convenient for vehicle speed adjustment and a driving method thereof.
Background
At present, automobile emission and energy consumption become global problems, and with more and more strict environmental protection measures in various countries in the world, more and more proposals for replacing fuel engine automobiles, such as hydrogen energy automobiles, fuel cell automobiles, hybrid automobiles and the like, are provided; at present, the hybrid electric vehicle has the most practical value and a commercial operation mode, and only has the hybrid electric vehicle. Hybrid vehicles with low emissions and low energy consumption have become one of the mainstream of the current automobile industry development, and the key of the hybrid vehicle is a hybrid system, and the performance of the hybrid vehicle is directly related to the performance of the whole hybrid vehicle. The hybrid power means that the automobile adopts two driving modes of fuel oil driving and electric driving; the advantages that when the vehicle is started and stopped or at low speed, the vehicle can be driven only by the motor, and the engine does not work when the vehicle does not reach a certain speed; therefore, the engine can be prevented from being in an inefficient working condition state, and the electric energy is sourced from the engine and only needs to be added with oil.
At present, common heavy dump trucks (such as mining dump trucks and the like) are mainly used for completing specific tasks, have the working characteristics of short travel and heavy load bearing, and are loaded by large electric shovels or hydraulic shovels to and from a mining point and a discharging point.
The existing heavy-duty dump truck needs to be frequently switched among various vehicle speed working conditions within the vehicle speed range according to working condition requirements, but the cost of a gearbox of the existing heavy-duty dump truck needs to be controlled within a lower range, the original gearbox has more or less defects and cannot completely meet the conditions, and in order to meet the requirements of customers and the working conditions of the heavy-duty dump truck, a low-cost hybrid power system convenient for vehicle speed adjustment and a driving method thereof are designed to solve the problems.
It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the invention.
Disclosure of Invention
To overcome the above-mentioned deficiencies in the prior art, the present invention aims to provide a low-cost hybrid system and a driving method thereof, which are convenient for adjusting the vehicle speed.
In order to achieve the above objects and other related objects, the present invention provides the following technical solutions: a low-cost hybrid power system convenient for adjusting the speed of a vehicle comprises a power input end and a power output end, wherein the power input end is provided with a first power source, and the hybrid power system further comprises a first clutch, a first epicyclic gear train, a second epicyclic gear train, a first brake and a second brake;
the first rotating wheel system comprises a first planet wheel, a first sun wheel, a first gear ring and a first planet carrier, the first planet wheel is respectively connected with the first sun wheel and the first gear ring, and the first planet wheel is connected with the first planet carrier;
the second epicyclic gear train comprises a second planet wheel, a second sun wheel, a second gear ring and a second planet carrier, the second planet wheel is respectively connected with the second sun wheel and the second gear ring, and the second planet wheel is connected with the second planet carrier;
the first sun gear is connected with the first brake, the first planet carrier is connected with the power input end, and the first planet carrier can be connected with the first sun gear through the first clutch;
the second sun gear is connected with the first planet carrier, the second planet carrier is connected with the power output end, the second gear ring is connected with the first gear ring, and the first gear ring and the second gear ring are both connected with the second brake.
The preferable technical scheme is as follows: the power input end is also provided with a second power source, and the second power source is in transmission connection with the first planet carrier through a second clutch.
The preferable technical scheme is as follows: the second clutch is a dry clutch.
The preferable technical scheme is as follows: the first power source is a motor, and the second power source is an engine.
The preferable technical scheme is as follows: the first gear ring and the second gear ring are integrally arranged.
The preferable technical scheme is as follows: the power output end is connected with the wheels.
The preferable technical scheme is as follows: the method comprises the following steps:
in a first working state, the second clutch is disconnected, the first brake is disconnected, and the second brake is combined;
in a second working state, the second clutch is combined, the first brake is disconnected, and the second brake is disconnected;
in a third working state, the second clutch is in a combined setting, the first clutch is in a disconnected setting, the first brake is in a combined setting, and the second brake is in a disconnected setting;
and in a fourth working state, the second clutch is combined, the first clutch is disconnected, the first brake is disconnected, and the second brake is disconnected.
The invention also provides a driving method of the low-cost hybrid power system, which is convenient for adjusting the vehicle speed, and comprises the following steps: the pure electric mode is realized through the first working state; and locking the second brake to fix the second gear ring, disconnecting the first brake, the first clutch and the second clutch, and outputting the torque of the first power source through a second sun gear of the second epicyclic gear train and a second planet carrier of the second epicyclic gear train to realize the pure electric mode.
The invention also provides a driving method of the low-cost hybrid power system, which is convenient for adjusting the vehicle speed, and comprises the following steps: realizing a 1:1 transmission ratio output mode through the second working state; and disconnecting the first brake and the second brake, and combining the first clutch and the second clutch, wherein the first planet carrier is connected with the first sun gear, the first epicyclic train is locked, the second gear ring is connected with the first gear ring, the second epicyclic train follows, and the second power source provides power to drive the wheels, so that the output of the transmission ratio 1:1 is realized.
The invention also provides a driving method of the low-cost hybrid power system, which is convenient for adjusting the vehicle speed, and comprises the following steps: realizing a high-speed operation mode through the third working state; and combining the first brake, disconnecting the second brake, disconnecting the first clutch and combining the second clutch, wherein one path of power is input from the second sun gear, one path of power is input from the first planet carrier and input to the second gear ring after being accelerated from the first gear ring, and the two paths of power are input from the second planet carrier after being synthesized, so that high-speed output is realized.
Due to the application of the technical scheme, compared with the prior art, the invention has the advantages that:
the hybrid power system designed by the invention adopts the motor and the two planet rows, and the two planet rows share the gear ring, so that the hybrid power system has the advantages of simple structure, convenience in processing and low cost; the whole framework realizes the adjustment of various vehicle speed working conditions of the heavy dump truck through the two clutches and the two brakes, the system can be provided with three gears, namely a low-speed climbing gear, a medium-speed direct gear and a high-speed gear, the gears are convenient to adjust, and the optimal performance suitable for the heavy dump truck is achieved by utilizing the characteristics of an engine and a motor and the speed change of a secondary planetary gear.
Drawings
FIG. 1 is a first block diagram of the present invention.
FIG. 2 is a second schematic diagram of the present invention.
In the above drawings, the second power source 1, the second clutch 2, the first power source 3, the first clutch 4, the first brake 5, the first gear ring 6, the second brake 7, the second planet carrier 8, the second planet wheel 9, the second sun gear 10, the first planet carrier 11, the first planet wheel 12, the first sun gear 13, and the second gear ring 14.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1 and 2. It should be understood that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the product of the present invention is usually placed in when used, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, and a communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1: as shown in fig. 1, a low-cost hybrid system convenient for adjusting vehicle speed comprises a power input end and a power output end, wherein the power input end is provided with a first power source 3, and the hybrid system further comprises a first clutch 4, a first epicyclic gear train, a second epicyclic gear train, a first brake 5 and a second brake 7; the first epicyclic gear train comprises a first planet wheel 12, a first sun wheel 13, a first gear ring 6 and a first planet carrier 11, the first planet wheel 12 is respectively connected with the first sun wheel 13 and the first gear ring 6, and the first planet wheel 12 is connected with the first planet carrier 11; the second epicyclic train comprises a second planet wheel 9, a second sun wheel 10, a second ring gear 14 and a second planet carrier 8, the second planet wheel 9 is respectively connected with the second sun wheel 10 and the second ring gear 14, and the second planet wheel 9 is connected with the second planet carrier 8; the first sun gear 13 is connected with the first brake 5, the first planet carrier 11 is connected with the power input end, and the first planet carrier 11 can be connected with the first sun gear 13 through the first clutch 4; the second sun gear 10 is connected with the first planet carrier 11, the second planet carrier 8 is connected with the power output end, the second gear ring 14 is connected with the first gear ring 6, and the first gear ring 6 and the second gear ring 14 are both connected with the second brake 7.
Example 2: as shown in fig. 2, a low-cost hybrid system convenient for adjusting vehicle speed comprises a power input end and a power output end, wherein the power input end is provided with a first power source 3, and the hybrid system further comprises a first clutch 4, a first epicyclic gear train, a second epicyclic gear train, a first brake 5 and a second brake 7; the first epicyclic gear train comprises a first planet wheel 12, a first sun wheel 13, a first gear ring 6 and a first planet carrier 11, the first planet wheel 12 is respectively connected with the first sun wheel 13 and the first gear ring 6, and the first planet wheel 12 is connected with the first planet carrier 11; the second epicyclic train comprises a second planet wheel 9, a second sun wheel 10, a second ring gear 14 and a second planet carrier 8, the second planet wheel 9 is respectively connected with the second sun wheel 10 and the second ring gear 14, and the second planet wheel 9 is connected with the second planet carrier 8; the first sun gear 13 is connected with the first brake 5, the first planet carrier 11 is connected with the power input end, and the first planet carrier 11 can be connected with the first sun gear 13 through the first clutch 4; the second sun gear 10 is connected with the first planet carrier 11, the second planet carrier 8 is connected with the power output end, the second gear ring 14 is connected with the first gear ring 6, and the first gear ring 6 and the second gear ring 14 are both connected with the second brake 7. The power input end is also provided with a second power source 1, and the second power source 1 is in transmission connection with the first planet carrier 11 through a second clutch 2. The second clutch 2 is a dry clutch. The first power source 3 is a motor, and the second power source 1 is an engine. The power output end is connected with the wheels.
The preferred embodiment is: the first ring gear 6 is provided integrally with the second ring gear 14. Convenient processing and low cost.
The preferred embodiment is: the second clutch 2 is a dry clutch. The dry clutch has low cost, light weight, good fuel economy and high torque transmission efficiency.
The working state comprises the following steps:
in the first working state, the second clutch 2 is disconnected, the first clutch 4 is disconnected, the first brake 5 is disconnected, and the second brake 7 is combined;
in a second working state, the second clutch 2 is combined, the first clutch 4 is combined, the first brake 5 is disconnected, and the second brake 7 is disconnected;
in a third working state, the second clutch 2 is combined, the first clutch 4 is disconnected, the first brake 5 is combined, and the second brake 7 is disconnected;
in the fourth operating state, the second clutch 2 is engaged, the first clutch 4 is disengaged, the first brake 5 is disengaged, and the second brake 7 is disengaged.
The driving method of the hybrid power system comprises the following steps:
the pure electric mode is realized through the first working state; the second brake 7 is locked, so that the second gear ring 14 is fixed, the first brake 5, the first clutch 4 and the second clutch 2 are disconnected, the torque of the first power source 3 is input through the second sun gear 10 of the second epicyclic gear train and is output through the second planet carrier 8 of the second epicyclic gear train, and the pure electric mode is realized.
Realizing a 1:1 transmission ratio output mode through a second working state; the first brake 5 and the second brake 7 are disconnected, the first clutch 4 and the second clutch 2 are combined, at the moment, the first planet carrier 11 is connected with the first sun gear 13, the first epicyclic gear train is locked, the second gear ring 14 is connected with the first gear ring 6, the second epicyclic gear train follows, the second power source 1 provides power to drive wheels, and the output of the transmission ratio 1:1 is realized.
Realizing a high-speed operation mode through a third working state; the first brake 5 is combined, the second brake 7 is disconnected, the first clutch 4 is disconnected, the second clutch 2 is combined, one path of power is input from the second sun gear 10, one path of power is input from the first planet carrier 11 and input to the second gear ring 14 after being accelerated from the first gear ring 6, and the two paths of power are input from the second planet carrier 8 after being synthesized, so that high-speed output is realized.
The application comprises the following steps:
starting and low-speed working conditions: the second brake 7 is locked in a combined mode, a second gear ring 14 of the second epicyclic gear train is fixed, the first clutch 4 and the first brake 5 are disconnected, the second clutch 2 of the second power source 1 is disconnected, the torque of the first power source 3 is input through a second sun gear 10 of the second epicyclic gear train and is output through a second planet carrier 8 of the second epicyclic gear train, the large-transmission-ratio speed reduction output is realized, and the pure electric mode is realized by the first working state.
And (3) medium-speed working condition: when the speed increases, the second brake 7 and the first brake 5 are disconnected, the first clutch 4 is combined, the epicyclic gear train is locked, and the speed of the engine is 1:1, when the rotating speed of the first power source 3 is increased to a certain speed, the second power source 1 is started and participates in work, at the moment, power is mainly provided by the second power source 1, the first power source 3 can be switched into a power generation mode to supplement battery energy, the mode can be determined according to the capacity and the load of a battery, and at the moment, three modes exist: the second power source 1+ the first power source 3 drives, the second power source 1+ the first power source 3 follows up, and the second power source 1+ the first power source 3 generates power, and is realized by the second working state.
High-speed working conditions: when the vehicle speed is further increased, the second brake 7 and the first clutch 4 are disconnected, the first brake 5 is combined, one path of power is input from the second sun gear 10 of the second epicyclic gear train, the other path of power is input from the first planet carrier 11 of the first epicyclic gear train, the power is input from the first gear ring 6 after being accelerated and then input into the second gear ring 14 of the second epicyclic gear train, and overspeed output is realized from the second planet carrier 8 after synthesis, at the moment, the first power source 3 can determine the mode according to the battery capacity, the load and the like to realize the optimal mode, and at the moment, three modes are also available: the second power source 1+ the first power source 3 drives, the second power source 1+ the first power source 3 follows up, and the second power source 1+ the first power source 3 generates power, and is realized by a third working state.
And (3) slowly driving on a downhill: the second power source 1 is closed or idled, the second clutch 2 of the second power source 1 is disconnected, the first power source 3 generates electricity to recover energy, and the gear of the epicyclic gear train is determined according to the vehicle speed.
Deceleration and braking: the second power source 1 is closed or idled, the second clutch 2 of the second power source 1 is disconnected, the first power source 3 generates electricity to recover energy, and the gear of the epicyclic gear train is determined according to the vehicle speed.
Parking power generation: the second power source 1 idles or normally works, the second clutch 2 of the second power source 1 is combined, the first clutch 4, the first brake 5 and the second brake 7 are all disconnected, the first power source 3 is in a power generation state, and the fourth working state is adopted.
The hybrid power system designed by the invention adopts the motor and the two planet rows, and the two planet rows share the gear ring, so that the hybrid power system has the advantages of simple structure, convenience in processing and low cost; the whole framework realizes the adjustment of various vehicle speed working conditions of the heavy dump truck through the two clutches and the two brakes, the system can be provided with three gears, namely a low-speed climbing gear, a medium-speed direct gear and a high-speed gear, the gears are convenient to adjust, and the optimal performance suitable for the heavy dump truck is achieved by utilizing the characteristics of an engine and a motor and the speed change of a secondary planetary gear.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a low-cost hybrid power system convenient to adjust speed of a motor vehicle, includes power input end and power take off end, power input end is provided with first power supply, its characterized in that: the hybrid power system further comprises a first clutch, a first epicyclic gear train, a second epicyclic gear train, a first brake and a second brake;
the first rotating wheel system comprises a first planet wheel, a first sun wheel, a first gear ring and a first planet carrier, the first planet wheel is respectively connected with the first sun wheel and the first gear ring, and the first planet wheel is connected with the first planet carrier;
the second epicyclic gear train comprises a second planet wheel, a second sun wheel, a second gear ring and a second planet carrier, the second planet wheel is respectively connected with the second sun wheel and the second gear ring, and the second planet wheel is connected with the second planet carrier;
the first sun gear is connected with the first brake, the first planet carrier is connected with the power input end, and the first planet carrier can be connected with the first sun gear through the first clutch;
the second sun gear is connected with the first planet carrier, the second planet carrier is connected with the power output end, the second gear ring is connected with the first gear ring, and the first gear ring and the second gear ring are both connected with the second brake.
2. A low-cost hybrid powertrain system for facilitating vehicle speed adjustment as set forth in claim 1, wherein: the power input end is also provided with a second power source, and the second power source is in transmission connection with the first planet carrier through a second clutch.
3. A low-cost hybrid powertrain system for facilitating vehicle speed adjustment as set forth in claim 2, wherein: the second clutch is a dry clutch.
4. A low-cost hybrid powertrain system for facilitating vehicle speed adjustment as set forth in claim 3, wherein: the first power source is a motor, and the second power source is an engine.
5. A low-cost hybrid powertrain system for facilitating vehicle speed adjustment as set forth in claim 4, wherein: the first gear ring and the second gear ring are integrally arranged.
6. A low-cost hybrid powertrain system for facilitating vehicle speed adjustment as set forth in claim 5, wherein: the power output end is connected with the wheels.
7. A low-cost hybrid powertrain system for facilitating vehicle speed adjustment as set forth in claim 6, comprising:
in a first working state, the second clutch is disconnected, the first brake is disconnected, and the second brake is combined;
in a second working state, the second clutch is combined, the first brake is disconnected, and the second brake is disconnected;
in a third working state, the second clutch is in a combined setting, the first clutch is in a disconnected setting, the first brake is in a combined setting, and the second brake is in a disconnected setting;
and in a fourth working state, the second clutch is combined, the first clutch is disconnected, the first brake is disconnected, and the second brake is disconnected.
8. A method of driving a low cost hybrid powertrain system that facilitates speed adjustment of a vehicle as set forth in claim 7 wherein: the pure electric mode is realized through the first working state; and locking the second brake to fix the second gear ring, disconnecting the first brake, the first clutch and the second clutch, and outputting the torque of the first power source through a second sun gear of the second epicyclic gear train and a second planet carrier of the second epicyclic gear train to realize the pure electric mode.
9. A method of driving a low cost hybrid powertrain system that facilitates speed adjustment of a vehicle as set forth in claim 7 wherein: realizing a 1:1 transmission ratio output mode through the second working state; and disconnecting the first brake and the second brake, and combining the first clutch and the second clutch, wherein the first planet carrier is connected with the first sun gear, the first epicyclic train is locked, the second gear ring is connected with the first gear ring, the second epicyclic train follows, and the second power source provides power to drive the wheels, so that the output of the transmission ratio 1:1 is realized.
10. A method of driving a low cost hybrid powertrain system that facilitates speed adjustment of a vehicle as set forth in claim 7 wherein: realizing a high-speed operation mode through the third working state; and combining the first brake, disconnecting the second brake, disconnecting the first clutch and combining the second clutch, wherein one path of power is input from the second sun gear, one path of power is input from the first planet carrier and input to the second gear ring after being accelerated from the first gear ring, and the two paths of power are input from the second planet carrier after being synthesized, so that high-speed output is realized.
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