CN114857222A - Multi-mode automotive electromechanical compound transmission - Google Patents
Multi-mode automotive electromechanical compound transmission Download PDFInfo
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- CN114857222A CN114857222A CN202210521236.4A CN202210521236A CN114857222A CN 114857222 A CN114857222 A CN 114857222A CN 202210521236 A CN202210521236 A CN 202210521236A CN 114857222 A CN114857222 A CN 114857222A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/62—Gearings having three or more central gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/10—Braking arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1807—Rotary generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0047—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising five forward speeds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/201—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with three sets of orbital gears
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
A multi-mode automotive electromechanical compound transmission belongs to the technical field of power transmission systems. The input shaft is connected with a first planet row, the output shaft is connected with a third planet row, the first planet row is connected with a second planet row through a clutch, the second planet row is connected with the third planet row through a clutch, the second planet row is provided with two driving motor/generators, the driving motor/generators can be switched between power generation working states and power driving working states, the first planet row and the third planet row are respectively provided with a brake, and the switching of different working modes of the whole mechanism can be realized through the combination and separation of different clutches and brakes and the change of the motor in different working states, so that the stepless speed regulation is realized. The invention realizes three electromechanical compound working modes through three planet rows, three high-efficiency pure mechanical gears and two pure electric gears, has simple structure and ensures that the vehicle obtains the best dynamic property and fuel economy under the condition of using less parts.
Description
Technical Field
The invention belongs to the technical field of power transmission systems, and particularly relates to a multi-mode automotive electromechanical compound transmission.
Background
In recent years, with the development of automobile electric transmission technology and under the technical conditions of a motor and an energy storage device, the pure electric motor has the defects of short endurance mileage and the like in the driving process, and the electromechanical compound transmission is one of the optimal schemes for solving various problems of energy consumption, environmental pollution and the like of vehicles at the present stage. The electromechanical compound transmission automobile can improve the fuel economy of the automobile and reduce the exhaust emission under the condition of not sacrificing the safety, the reliability and other conventional characteristics of the automobile. The engine and the motor are connected through the planetary row to realize power split transmission, on one hand, the transmission range of the electromechanical compound transmission system is widened through power flow transmission of two paths of power flow of electricity and machinery, the engine works in the optimal working area, and the fuel economy and the power performance of the whole vehicle are improved, on the other hand, the output rotating speed of the gearbox is continuously changed under the condition that the input rotating speed of the engine is basically unchanged by adjusting the rotating speed of the motor, namely, the stepless speed change of the electric machinery is realized.
The mechanical part of the automobile speed change system mainly adopts two forms of a planetary transmission mechanism and a dead axle gear transmission mechanism, a pair of dead axle gear mechanisms are required to be added when a gear is added to the speed changer, and the multi-degree-of-freedom planetary transmission mechanism only needs to switch different control elements to increase the number of modes. Therefore, compared with a fixed-axis gear transmission mechanism, the planetary transmission mechanism has the advantages of light weight, compact structure, stable transmission, high transmission efficiency and the like, and is widely used. The modern electromechanical compound transmission automobile gradually develops towards the directions of multiple modes, high power, high rotating speed and high power density, and the requirement on a planetary transmission mechanism is higher.
Disclosure of Invention
In order to achieve the purpose, the invention provides a multi-mode automotive electromechanical compound transmission which is simple in structure, reduces the structural complexity under the condition of meeting the requirements of various working modes, can realize stepless speed regulation, enables a vehicle to work in an optimal fuel oil economic area, and meets the power requirement at the same time.
The invention provides the following scheme: a multi-mode automotive electro-mechanical compound transmission is provided and includes an input shaft, a first planetary gear set, a second planetary gear set, a third planetary gear set, an output shaft, a first motor/generator, a second motor/generator, a brake, a clutch, and an energy management system.
The first planet row comprises a first sun gear, a first gear ring, a first planet carrier and a first planet gear, the first planet carrier is fixedly connected with a second planet carrier and a third sun gear, a first brake is arranged outside the first sun gear, a first clutch is arranged between the first sun gear and a second gear ring, the first planet gear is arranged on the first planet carrier and meshed with the first sun gear, and the input shaft is used for connecting an engine and is fixedly connected with the first gear ring;
the second planet row comprises a second sun gear, a second gear ring, a second planet carrier and a second planet gear, a first motor/generator is arranged outside the second gear ring, a second motor/generator is arranged outside the second sun gear, a second clutch is arranged between the second sun gear and the third gear ring, and the second planet gear is arranged on the second planet carrier and meshed with the second sun gear;
the third planet row comprises a third sun gear, a third planet wheel, a third gear ring and a third planet carrier, a second brake is arranged on the outer portion of the third gear ring, the third planet wheel is arranged on the third planet carrier and is meshed with the third sun gear, and the output shaft is fixedly connected with the third planet carrier;
the first motor/generator and the second motor/generator are operable in both generating and motoring operating states;
the energy management system comprises a power battery pack, and is connected with the first motor/generator and the second motor/generator through electric wires and used for controlling and coordinating electric power;
and the first brake, the second brake, the first clutch and the second clutch are connected and disconnected, and the first motor/generator and the second motor/generator are matched with an energy management system to realize the switching of different working modes.
The transmission device can realize the following working conditions and gears:
electromechanical compound working mode 1: when the first brake is engaged, the first sun gear is fixed, and when the second brake is engaged, the third gear ring is fixed, and meanwhile, the first motor/generator works in a power generation state and the rotating speed of the first motor/generator gradually decreases, the second motor/generator works in an electric state and the rotating speed of the second motor/generator gradually increases, the whole speed change mechanism has the engine and the motor to simultaneously transmit power, stepless speed regulation is realized, a first electromechanical compound working mode is formed, at the end of the first electromechanical compound working mode, the rotating speed of the first motor/generator is reduced to 0, at the moment, the second gear ring connected with the first motor/generator is fixed, a first mechanical point of the electromechanical compound working mode 1 is generated, and the first mechanical point of the electromechanical compound working mode 1 is the beginning of the electromechanical compound working mode 2;
electromechanical compound working mode 2: at a first mechanical point of the electromechanical compound working mode 1, the electromechanical compound working mode 1 is switched to an electromechanical compound working mode 2, when the first brake is released, the first sun gear is released, the first clutch is engaged, the first sun gear and the second gear ring are connected into a whole, the second brake is engaged, the third gear ring is fixed, and at the moment, the rotating speed of the second gear ring is still 0, so that the first mechanical point of the electromechanical compound working mode 2 is generated; meanwhile, the first motor/generator works in an electric state and the rotating speed of the first motor/generator gradually increases, the second motor/generator works in a power generation state and the rotating speed of the second motor/generator gradually decreases, the engine and the motor simultaneously transmit power to realize stepless speed regulation to form a second electromechanical compound working mode, at the end of the second electromechanical compound working mode, the rotating speed of the second motor/generator decreases to 0, which is equivalent to that a second sun gear connected with the second motor/generator is fixed to generate a second mechanical point of the electromechanical compound working mode 2, and the second mechanical point of the electromechanical compound working mode 2 is the beginning of the electromechanical compound working mode 3;
electromechanical compound operating mode 3: at a second mechanical point of the electromechanical compound working mode 2, the electromechanical compound working mode 2 is switched to an electromechanical compound working mode 3, when the second brake is released, the third gear ring is released, the second clutch is engaged, the second sun gear and the third gear ring are connected into a whole, the first clutch is engaged, the first sun gear and the second gear ring are connected into a whole, at the moment, the rotating speed of the second sun gear is still 0, and a first mechanical point of the electromechanical compound working mode 3 is generated; meanwhile, the first motor/generator works in a power generation state and the rotating speed of the first motor/generator gradually decreases, the second motor/generator works in an electric state and the rotating speed of the second motor/generator gradually increases, the whole speed change mechanism is provided with an engine and a motor which simultaneously transmit power to realize stepless speed regulation to form a third electromechanical compound working mode, at the end of the third electromechanical compound working mode, the rotating speed of the first motor/generator decreases to 0, which is equivalent to that a second ring gear connected with the first motor/generator is fixed to generate a second mechanical point of the electromechanical compound working mode 3;
mechanical first gear: when the first brake is engaged, the first sun gear is fixed, the second brake is engaged, the third gear ring is fixed, the second clutch is engaged, the second sun gear and the third gear ring are connected into a whole, the first motor/generator and the second motor/generator do not work, only the engine inputs power, and mechanical first gear is realized;
and (4) mechanically stopping: when the second brake is engaged, the third gear ring is fixed, the first clutch is engaged, the first sun gear and the second gear ring are connected into a whole, the second clutch is engaged, the second sun gear and the third gear ring are connected into a whole, the first motor/generator and the second motor/generator do not work, only the engine inputs power, and mechanical second gear is realized;
mechanical three-gear: when the first brake is engaged, the first sun gear is fixed, the first clutch is engaged, the first sun gear and the second gear ring are connected into a whole, the second clutch is engaged, the second sun gear and the third gear ring are connected into a whole, the first motor/generator and the second motor/generator do not work, only the engine inputs power, and the mechanical third gear is realized;
pure electric gear 1: when the first brake is engaged, the first sun gear is fixed, the second brake is engaged, the third gear ring is fixed, the first clutch is engaged, the first sun gear and the second gear ring are connected into a whole, the second motor/generator works in an electric state, and the vehicle can realize forward or reverse by adjusting the rotation direction of the second motor/generator.
Pure electric gear 2: when the first brake is engaged, the first sun gear is fixed, the second brake is engaged, the third gear ring is fixed, the second clutch is engaged, the second sun gear and the third gear ring are connected into a whole, the first motor/generator works in an electric state, and the vehicle can realize forward or reverse by adjusting the rotation direction of the first motor/generator.
Preferably, the first brake and the second brake are both wet multi-disc brakes, and the first clutch and the second clutch are both wet multi-disc clutches.
By adopting the technical scheme, compared with the prior art, the invention has the following advantages:
the multi-mode automotive electromechanical compound transmission is composed of three basic planet rows, and is simple in structure, convenient to manufacture and install and small in mechanism size. The two motors/generators are matched with the two brakes and the two clutches to realize three-mode continuous stepless transmission, the first mode meets the working condition of low speed and large torque, the second mode is a medium-speed working condition, the third mode is a high-speed working condition, and mechanical points can realize seamless connection when the modes are switched, so that mode switching impact can be effectively reduced; three pure mechanical gears with high transmission efficiency and two pure electric gears can be realized by switching the two clutches and the two brakes; and the two generator/generators can also provide electric energy for external electric loads.
Drawings
FIG. 1 is a schematic structural diagram of a multi-mode vehicular electro-mechanical compound transmission of the present invention.
The hybrid power system comprises a power management system 1, a first planet row, a second planet row, a third planet row, a fourth planet row, a fifth planet carrier, a sixth planet carrier, a fourth planet carrier, a fifth planet carrier, a sixth planet carrier, a seventh planet carrier, a sixth planet carrier, a seventh planet carrier, a sixth planet carrier, a seventh planet carrier, a sixth planet carrier, a third planet carrier, a sixth planet carrier, a seventh planet carrier, a third planet carrier, a fourth.
Detailed Description
The invention will be further elucidated with reference to the drawings in a specific embodiment.
As shown in FIG. 1, the invention relates to a multi-mode electromechanical compound transmission for a vehicle, which comprises an input shaft, a first planet row 1, a second planet row 2, a third planet row 4 and an output shaft,
the first planet carrier 1 of the present invention comprises a first sun gear 12, a first ring gear 14, a first planet carrier 11 and a first planet gear 13, wherein the first planet carrier 11 is fixedly connected with a second planet carrier 21 and a third sun gear 32, the first sun gear 12 is externally provided with a first brake B1, a first clutch C1 is arranged between the first sun gear 12 and the second ring gear 23, the first planet gear 13 is arranged on the first planet carrier 11 and is engaged with the first sun gear 12, and the input shaft is fixedly connected with the first ring gear 14;
the second planetary gear set 2 of the present invention includes a second sun gear 22, a second ring gear 24, a second planet carrier 21, and second planetary gears 23, the second ring gear 24 is externally provided with a first motor/generator MG1, the second sun gear 22 is externally provided with a second motor/generator MG2, a second clutch C2 is provided between the second sun gear 22 and the third ring gear 34, and the second planetary gears 23 are provided on the second planet carrier 21 and are meshed with the second sun gear 22;
the third planetary row 3 of the present invention includes a third sun gear 32, a third planetary gear 33, a third ring gear 34, and a third carrier 31, the third ring gear 34 is externally provided with a second brake B2, and the third planetary gear 33 is provided on the third carrier 31 to be engaged with the third sun gear 32; the output shaft is fixedly connected with the third planet carrier 31;
the first motor/generator MG1 and the second motor/generator MG2 of the present invention are operable in both power generating and motoring operating states;
the energy management system 4 of the present invention includes a power battery pack and is connected to the first motor/generator MG1, the second motor/generator MG2 via electrical wiring for controlling and coordinating electrical power;
the invention realizes the switching of different working modes by the engagement and the disengagement of the first brake B1, the second brake B2, the first clutch C1 and the second clutch C2, and the cooperation of the first motor/generator MG1 and the second motor/generator MG4 under the cooperation of the energy management system 4.
The specific principle of use is as follows:
electromechanical composite mode 1: when the first brake B1 is engaged, the first sun gear 12 is fixed, and when the second brake B2 is engaged, the third ring gear 34 is fixed, meanwhile, the first motor/generator MG1 works in a power generation state and the rotation speed thereof gradually decreases, the second motor/generator MG2 works in an electric state and the rotation speed thereof gradually increases, the whole speed change mechanism has an engine and a motor which simultaneously transmit power, stepless speed regulation is realized, a first electromechanical compound working mode is formed, at the end of the first electro-mechanical compound mode of operation, the rotational speed of the first motor/generator MG1 is reduced to 0, which corresponds to the second ring gear 24 connected to the first motor/generator MG1 being stationary, producing a first mechanical point of the electro-mechanical compound mode of operation 1, which is the beginning of the electro-mechanical compound mode of operation 2;
electromechanical composite mode 2: in the first mechanical point of the electromechanical compound operating mode 1, the electromechanical compound operating mode 1 is switched to the electromechanical compound operating mode 2, when the first brake B1 is disengaged to release the first sun gear 12, the first clutch C1 is engaged, the first sun gear 12 and the second ring gear 24 are connected as a whole, the second brake B2 is engaged to fix the third ring gear 34, at the same time, the rotation speed of the second ring gear 24 is still 0, the first mechanical point of the electromechanical compound operating mode 2 is generated, meanwhile, the first motor/generator MG1 is operated in the electric state and the rotation speed thereof is gradually increased, the second motor/generator MG2 is operated in the electric generating state and the rotation speed thereof is gradually decreased, the whole speed change mechanism has the engine and the motor to transmit power simultaneously, stepless speed regulation is realized, the second electromechanical compound operating mode is formed, at the end of the second electromechanical compound operating mode, the speed of the second motor/generator MG2 is reduced to 0, which corresponds to the second sun gear 22 connected to the second motor/generator being stationary, creating a second mechanical point for electromechanical compound mode 2, which second mechanical point for electromechanical compound mode 2 is the beginning of electromechanical compound mode 3;
electromechanical composite mode 3: at the second mechanical point of the electromechanical compound mode 2, the electromechanical compound mode 2 is switched to the electromechanical compound mode 3, when the second brake B2 is released to release the third ring gear 34, the second clutch C2 is engaged, the second sun gear 22 and the third ring gear 34 are connected as a whole, the first clutch C1 is engaged, the first sun gear 12 and the second ring gear 24 are connected as a whole, at this time, the rotation speed of the second sun gear 22 is still 0, the first mechanical point of the electromechanical compound mode 3 is generated, at the same time, the first motor/generator MG1 is operated in the power generation state and the rotation speed thereof is gradually decreased, the second motor/generator MG2 is operated in the electric state and the rotation speed thereof is gradually increased, the whole speed change mechanism has the engine and the motors simultaneously transmitting power, stepless speed regulation is realized, a third electromechanical compound mode is formed, at the end of the third electromechanical compound mode, the rotational speed of the first motor/generator MG1 is reduced to 0, which corresponds to the second ring gear 24 connected to the first motor/generator MG1 being stationary, creating the second mechanical point of the electro-mechanical compound operating mode 3;
mechanical first gear: when the first brake B1 is engaged, the first sun gear 12 is fixed, the second brake B2 is engaged, the third ring gear 34 is fixed, the second clutch C2 is engaged, the second sun gear 22 and the third ring gear 34 are connected into a whole, the first motor/generator MG1 and the second motor/generator MG2 are not operated, only the engine input power is used, and the mechanical first gear is realized;
and (4) mechanically stopping: when the second brake B2 is engaged, the third ring gear 34 is fixed, the first clutch C1 is engaged, the first sun gear 12 and the second ring gear 24 are connected as a whole, the second clutch C2 is engaged, the second sun gear 22 and the third ring gear 34 are connected as a whole, the first motor/generator MG1 and the second motor/generator MG2 are not operated, only the engine input power is used, and the mechanical second gear is realized;
mechanical three-gear: when the first brake B1 is engaged, the first sun gear 12 is fixed, the first clutch C1 is engaged, the first sun gear 12 and the second ring gear 24 are connected as a whole, the second clutch C2 is engaged, the second sun gear 22 and the third ring gear 34 are connected as a whole, the first motor/generator MG1 and the second motor/generator MG2 are not operated, only the engine input power is used, and the mechanical third gear is realized;
pure electric gear 1: when the first brake B1 is engaged, the first sun gear 12 is fixed, the second brake B2 is engaged, the third ring gear 34 is fixed, the first clutch C1 is engaged, the first sun gear 12 and the second ring gear 24 are connected as a whole, the second motor/generator MG2 operates in a motor-driven state, and the vehicle can be driven forward or backward by adjusting the rotation direction of the second motor/generator MG 2.
Pure electric gear 2: when the first brake B1 is applied, the first sun gear 12 is fixed, the second brake B2 is applied, the third ring gear 34 is fixed, the second clutch C2 is engaged, the second sun gear 22 and the third ring gear 34 are connected as a whole, the first motor/generator MG1 operates in a motor-driven state, and the vehicle can be driven in forward or reverse by adjusting the rotation direction of the first motor/generator MG 1.
The operation and transmission ratio of the operating elements in each working condition are detailed in the following table:
TABLE 1 operating element control table for each operating condition
In table 1, v represents the engagement of the manipulating element, blank indicates the disengagement of the manipulating element, and the operating states of the first motor/generator MG1 and the second motor/generator MG2 are switched between the power generation and the motoring. k 1-k 3 are the characteristic parameters of the planet row of the first planet row, the second planet row and the third planet row respectively, and are equal to the ratio of the tooth numbers of the ring gear and the sun gear. k1 is the ratio of the number of teeth of the first ring gear 14 to the first sun gear 12, k2 is the ratio of the number of teeth of the second ring gear 24 to the second sun gear 22, and k3 is the ratio of the number of teeth of the third ring gear 34 to the third sun gear 32.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no conflict between the structures of the descriptions, and the combinations not exhaustively described in this specification are merely for brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (2)
1. A multi-mode vehicular electro-mechanical compound transmission is characterized by comprising an input shaft, a first planetary row (1), a second planetary row (2), a third planetary row (3), an output shaft, a first motor/generator (MG 1), a second motor/generator (MG 2), a first brake (B1), a second brake (B2), a first clutch (C1), a second clutch (C2) and an energy management system (4);
the first planet row (1) comprises a first sun gear (12), a first gear ring (14), a first planet carrier (11) and a first planet gear (13), wherein a first brake (B1) is arranged outside the first sun gear (12), a first clutch (C1) is arranged between the first sun gear (12) and a second gear ring (23), the first planet gear (13) is arranged on the first planet carrier (11) and meshed with the first sun gear (12), and the input shaft is used for connecting an engine and fixedly connected with the first gear ring (14);
the second planet row (2) comprises a second sun gear (22), a second ring gear (24), a second planet carrier (21) and second planet gears (23), a first motor/generator (MG 1) is arranged outside the second ring gear (24), a second motor/generator (MG 2) is arranged outside the second sun gear (22), a second clutch (C2) is arranged between the second sun gear (22) and the third ring gear (34), and the second planet gears (23) are arranged on the second planet carrier (21) and meshed with the second sun gear (22);
the third planetary row (3) comprises a third sun gear (32), a third planet gear (33), a third ring gear (34) and a third planet carrier (31), the third ring gear (34) is externally provided with a second brake (B2), and the third planet gear (33) is arranged on the third planet carrier (31) and is meshed with the third sun gear (32); the output shaft is fixedly connected with a third planet carrier (31);
the first motor/generator (MG 1) and the second motor/generator (MG 2) are operable in both power generating and motoring operating states;
the energy management system (4) comprises a power battery pack and is connected with the first motor/generator (MG 1) and the second motor/generator (MG 2) through electric wires for controlling and coordinating electric power;
stepless speed regulation and switching of different working modes are achieved through the engagement and disengagement of the first brake (B1), the second brake (B2), the first clutch (C1) and the second clutch (C2), and the cooperation of the first motor/generator (MG 1) and the second motor/generator (MG 2) under the cooperation of an energy management system (4).
2. The multi-mode automotive electro-mechanical compound transmission of claim 1, said first brake (B1) and second brake (B2) being both wet multi-disc brakes, and said first clutch (C1) and second clutch (C2) being both wet multi-disc clutches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210521236.4A CN114857222A (en) | 2022-05-13 | 2022-05-13 | Multi-mode automotive electromechanical compound transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210521236.4A CN114857222A (en) | 2022-05-13 | 2022-05-13 | Multi-mode automotive electromechanical compound transmission |
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| CN114857222A true CN114857222A (en) | 2022-08-05 |
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|---|---|---|---|
| CN202210521236.4A Pending CN114857222A (en) | 2022-05-13 | 2022-05-13 | Multi-mode automotive electromechanical compound transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325115A (en) * | 2022-10-17 | 2022-11-11 | 北京航空航天大学 | Three-stage planetary gear speed change mechanism and multi-gear automatic transmission |
-
2022
- 2022-05-13 CN CN202210521236.4A patent/CN114857222A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325115A (en) * | 2022-10-17 | 2022-11-11 | 北京航空航天大学 | Three-stage planetary gear speed change mechanism and multi-gear automatic transmission |
| CN115325115B (en) * | 2022-10-17 | 2023-01-06 | 北京航空航天大学 | Three-stage planetary gear speed change mechanism and multi-gear automatic transmission |
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