CN111731089A - Two series-parallel type oil-electricity hybrid power driving devices suitable for commercial vehicle - Google Patents

Two series-parallel type oil-electricity hybrid power driving devices suitable for commercial vehicle Download PDF

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Publication number
CN111731089A
CN111731089A CN202010660183.5A CN202010660183A CN111731089A CN 111731089 A CN111731089 A CN 111731089A CN 202010660183 A CN202010660183 A CN 202010660183A CN 111731089 A CN111731089 A CN 111731089A
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row
clutch
brake
planet
gear
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CN202010660183.5A
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王利英
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王利英
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Priority to CN202010660183.5A priority Critical patent/CN111731089A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/22Arrangement 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
    • B60K6/36Arrangement 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
    • B60K6/365Arrangement 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/42Arrangement 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 the architecture of the hybrid electric vehicle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60KARRANGEMENT 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
    • B60K6/00Arrangement 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
    • B60K6/20Arrangement 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
    • B60K6/50Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54Transmission for changing ratio
    • B60K6/547Transmission for changing ratio the transmission being a stepped gearing
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/80Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Abstract

The invention belongs to the field of vehicle transmission, and discloses two series-parallel hybrid power driving devices suitable for commercial vehicles, aiming at enabling an engine to continuously work at the maximum efficiency point, improving the fuel efficiency, saving energy and reducing emission, and simultaneously realizing stepless speed change by combining a single motor with an ISG motor and the engine for hybrid driving. The two transmission devices mainly comprise an engine, an ISG motor, a damping shock absorber, a driving motor, an electric power converter, an energy storage device and a power coupling speed change device. The power coupling speed change device consists of three planet rows, three brakes and three clutches. Through the combination of different control pieces and the control of the engine and the motor, the functions of a pure electric drive mode, a parallel mode, a series-parallel drive mode, a fixed mechanical gear and the like can be realized. The invention has the advantages that various working condition modes can be realized through the combination of different control parts, the engine can continuously work in a high-efficiency area, the vehicle can realize the working conditions of pure electric starting, medium and high speed cruising hybrid driving and the like, the requirements of vehicle climbing, frequent starting and stopping and the like can be met, and the energy is effectively saved and the emission is reduced. Meanwhile, the motor is low in power, space and weight are saved, a mechanical gear is arranged, and transmission efficiency is high.

Description

Two series-parallel type oil-electricity hybrid power driving devices suitable for commercial vehicle
Technical Field
The invention belongs to the field of power transmission, and particularly relates to a series-parallel hybrid transmission device suitable for a hybrid electric vehicle.
Background
Due to the shortage of energy and the enhancement of public environmental awareness, new energy environmental protection automobiles are increasingly gaining attention. However, due to technical restrictions, it is difficult to fully popularize a commercial vehicle, a pure electric or fuel cell type commercial vehicle, in a short time due to short driving mileage, charging difficulty, and the like, so that the hybrid type commercial vehicle is an ideal choice for a new energy environment-friendly vehicle at present.
Compared with the traditional automobile and the pure electric automobile, the hybrid electric automobile has the biggest difference of a power system. The hybrid electric vehicle can enable the engine to work in a high-efficiency area for a long time, improves the fuel economy, can realize the recovery of braking energy, saves energy, and simultaneously solves the problems of short endurance mileage and difficult charging of the pure electric vehicle. Hybrid vehicles are one of the mainstream forms of commercial vehicle development in the world today.
The hybrid power is in a series connection, a parallel connection and a parallel connection mode according to the power coupling mode of the motor and the engine. Because the planet row has the functions of multiple degrees of freedom and speed synthesis, a series-parallel hybrid power transmission device taking the planet row as a power coupling core is the main trend of the development of the current hybrid electric vehicles.
Disclosure of Invention
The purpose of the invention is: the hybrid oil-electricity hybrid power driving device has the advantages that two series-parallel type oil-electricity hybrid power driving devices suitable for commercial vehicles are provided, stepless speed change driving of the vehicles can be achieved, the engine works in a high-efficiency area constantly, energy is saved, meanwhile, the power requirement of the motor is reduced, power density is improved, and cost is saved.
In order to solve the technical problems, the invention adopts the following technical scheme, and provides two series-parallel type oil-electricity hybrid power driving devices suitable for commercial vehicles.
1. The first of two series-parallel hybrid power driving devices suitable for commercial vehicles comprises: the device comprises an engine, an ISG motor, a damping shock absorber, a driving motor, a power converter, an energy storage device and a power coupling speed change device. The power coupling speed change device comprises three planet rows, three clutches and three brakes, wherein:
the first planet row is an internal and external meshing single planet row and comprises a row of ring gears (R1), a row of planet carriers (PC 1), a row of sun gears (S1) and a row of planet gears (P1); a row of planet wheels (P1) are simultaneously meshed with a row of sun wheels (S1) and a row of ring gears (R1); a row of planet carriers (PC 1) supporting a row of planet wheels (P1);
the second planet row is an internal and external meshing single planet row and comprises a two-row ring gear (R2), a two-row planet carrier (PC 2), a two-row sun gear (S2) and a two-row planet gear (P2); the two-row planetary gear (P2) is simultaneously meshed with the two-row sun gear (S2) and the two-row ring gear (R2); the two-row planet carrier (PC 2) supports two-row planet wheels (P2);
the third planet row is an internal and external meshing single planet row and comprises three rows of gear rings (R3), three rows of planet carriers (PC 3), three rows of sun gears (S3) and three rows of planet gears (P3); the three rows of planet gears (P3) are simultaneously meshed with the three rows of sun gears (S3) and the three rows of ring gears (R3); the three-row planet carrier (PC 3) supports three rows of planet gears (P3);
a row of sun gears (S1) are fixedly connected with a driving Motor (MG), inner hubs of a third clutch (C3) and inner hubs of a third brake (B3), a row of planet carriers (PC 1) are fixedly connected with inner hubs of a second row of gear rings (R2) and a second brake (B2), and a row of gear rings (R1) are fixedly connected with inner hubs of a second clutch (C2), a second row of planet carriers (PC 2), a third row of gear rings (R3) and an inner hub of a first brake (B1);
the second row of sun gears (S2) is fixedly connected with an inner hub of the first clutch (C1) and the third row of sun gears (S3);
the three-row planet carrier (PC 3) is fixedly connected with an Output shaft (Output);
an output shaft of the Engine (Engine) is connected with an Integrated Starter Generator (ISG), and is fixedly connected with an outer hub of the first clutch (C1), an outer hub of the second clutch (C2) and an outer hub of the third clutch (C3) through a damping vibration absorber (ZN);
the first brake (B1) outer hub, the second brake (B2) outer hub, and the third brake (B3) outer hub are fixed to the transmission housing.
2. The second drive arrangement is substantially identical to the first arrangement except that the second clutch (C2) no longer connects the engine output member to the member of the row of ring gears (R1), but rather connects the engine output member to the member of the row of planet carriers (PC 1).
3. By combining different operating members, the two devices can realize different working modes.
And the first brake (B1) is combined to form a first pure electric driving mode of the driving motor.
And the second brake (B2) is combined to form a second pure electric drive mode of the drive motor.
In combination with the first brake (B1) and the first clutch (C1), a parallel driving mode one of the engine, the ISG motor and the driving motor may be formed.
And in combination with the second brake (B2) and the first clutch (C1), a second parallel driving mode of the engine, the ISG motor and the driving motor can be formed.
In conjunction with the first brake (B1) and the third clutch (C3), a parallel driving mode three of the engine, the ISG motor, and the driving motor may be formed.
In combination with the first clutch (C1), a first engine, ISG motor and drive motor power-split hybrid drive mode may be established.
And in combination with the second clutch (C2), a power-split hybrid driving mode II of the engine, the ISG motor and the driving motor can be formed.
4. By combining different operating members, the two devices can realize different mechanical gears.
In combination with the first clutch (C1) and the first brake (B1), a first mechanical gear can be formed.
In combination with the first clutch (C1) and the second brake (B2), a second mechanical gear can be formed.
In combination with the first clutch (C1) and the third brake (B3), a third mechanical gear can be formed.
In combination with the first clutch (C1) and the second clutch (C2), a fourth mechanical gear can be formed, which is a direct gear.
In combination with the second clutch (C2) and the third brake (B3), a fifth mechanical gear, which is an overdrive gear, can be formed.
In combination with the second clutch (C2) and the second brake (B2), the first hybrid drive can form a sixth mechanical gear, and the second hybrid drive cannot form an active gear.
In combination with the third clutch (C3) and the first brake (B1), a first reverse gear may be established.
In combination with the third clutch (C3) and the second brake (B2), a second reverse gear can be established.
5. The engine drives the ISG motor to generate electricity, and a series driving mode can be realized through the power converter or the energy storage device, so that the driving motor drives the vehicle to run.
6. When the ISG motor is replaced by other types of driving motors, the function of the hybrid driving device is unchanged; when any one or more of the second brake (B2), the third brake (B3) and the third clutch (C3) is removed, the hybrid drive unit can still be used in the vehicle powertrain.
7. The two hybrid driving devices further include a motor control unit, a battery controller, and a power transmission control unit.
Advantageous effects
The two series-parallel hybrid power driving devices suitable for the commercial vehicle, provided by the technical scheme, realize modes such as pure low-speed starting, parallel driving, series-parallel driving, fixed mechanical gear and the like through the engine, the ISG motor, the driving motor, the three planetary rows, the three clutches and the three brakes. The engine can work in a high-efficiency area, the motor can recover braking energy, energy is effectively saved, emission is reduced, the power requirement of the motor is low, the size of a transmission device is reduced, the weight of a gearbox is reduced, and manufacturing cost is reduced. And a plurality of modes are switched, the battery capacity requirement is low, and the cruising mileage of the automobile is improved. Possess mechanical fender, can improve its transmission efficiency.
Drawings
Fig. 1 is a schematic diagram of a first series-parallel hybrid drive apparatus according to an embodiment of the present invention.
The Engine is an Engine, the ISG is a starting and power generating integrated machine, the ZN is a damping shock absorber, the MG is a driving motor, the R1 is a row of gear rings, the PC1 is a row of planet carriers, the S1 is a row of sun gears, and the P1 is a row of planet gears; r2 is a two-row gear ring, PC2 is a two-row planet carrier, S2 is a two-row sun gear, and P2 is a two-row planet gear; r3 is three rows of gear rings, PC3 is three rows of planet carriers, S3 is three rows of sun gears, and P3 is three rows of planet gears. The operating members B1, B2 and B3 are brakes, and the operating members C1, C2 and C3 are clutches. Also included are a power converter and an energy storage device. In the figure: the engine input component, the output component, the driving motor input component and the transmission components.
Fig. 2 is a schematic diagram of a second series-parallel hybrid driving apparatus according to an embodiment of the present invention.
The components are numbered identically to those shown in FIG. 1, except that the C2 clutch-connected components are the Engine output member and the row of planet carriers PC 1.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following description will explain the present invention in further detail with reference to fig. 1 and examples. The detailed embodiment of the structure of fig. 2 is substantially the same as that of fig. 1, and therefore, will not be described herein again.
In order to solve the problems in the prior art, the technical scheme of the invention is shown in fig. 1, which describes a specific scheme of a hybrid driving device, and the hybrid driving device is composed of an engine, an ISG motor, a driving motor, three planetary rows, three clutches and three brakes to realize modes such as pure low-speed starting, parallel driving, series-parallel driving, series driving and fixed mechanical gear.
For convenience of description, the rotating parts are defined in turn as: firstly, an Engine and starting and generating integrated ISG Output shaft is connected with a clutch C1 outer hub, a clutch C2 outer hub and a clutch C3 outer hub through a damping vibration absorber ZN to form the integrated ISG Output shaft, secondly, the Output shaft Output and three rows of planet carriers PC3, thirdly, the Output shaft of a driving motor MG and a row of sun gears S1, a clutch C3 inner hub and a brake B3 inner hub, fourthly, a row of planet carriers PC1, a row of ring gears R2 and a brake B2 inner hub, fifthly, a row of ring gears R1, a clutch C2 inner hub, a row of planet carriers PC2, a row of ring gears R3 and a brake B1 inner hub, and sixthly, a row of sun gears S2, a row of sun gears S3 and a clutch C1 inner hub.
The outer hubs of the first and second brakes B1, B2 and the third brake B3 are fixed to the transmission housing.
The brake B1 is used for a braking member (c).
The brake B2 is used for braking the component (iv).
The brake B3 is used for braking the component (c).
The clutch C1 is used to connect the member (i) and the member (ii).
The clutch C2 is used to connect the member (r) and the member (C).
The clutch C3 is used to connect the member (r) and the member (C).
In the technical scheme, three planet rows are adopted, and six control parts (three clutches and three brakes) are used for directly or indirectly connecting basic components (a gear ring, a planet carrier and a sun gear) of each row with a driving motor, an engine, a starting and generating integrated machine, an output shaft and a box body.
The following is a description of the implementation of each working mode, and the hybrid drive device can implement the pure electric drive modes marked as EV1 and EV 2; three parallel drive modes PD1, PD2, and PDR; power split type series-parallel drive modes PS1 and PS 2; the six forward mechanical gears are respectively marked as: D1-D6; two reverse mechanical gears RD1 and RD 2; series drive mode SE. The specific analysis is as follows.
(1) And an electric vehicle drive mode EV.
The pure electric drive mode is mainly used for starting, reverse gear and low-speed city working conditions.
In conjunction with the first brake B1, power is input to a row of sun gears S1 through a driving motor MG, and power is output from three rows of carriers PC3, i.e., an output shaft, due to the fact that the members are braked and three planetary rows work together, thereby forming an electric vehicle drive mode EV 1.
In combination with the second brake B2, power is input to a row of sun gears S1 through a driving motor MG, and due to braking of a component (a), three planetary rows work together, and power is output from three rows of planetary carriers PC3, namely an output shaft (B), so that an electric vehicle driving mode EV2 is formed.
(2) The parallel driving mode PD.
The parallel driving mode PD1 is mainly used for working conditions such as starting and climbing, and when the power of the pure electric driving mode is insufficient, the engine assists power.
In combination with the first brake B1 and the first clutch C1, the power of the driving motor MG is input through a row of sun gears S1, the Engine power is input from a row of sun gears S2, the three planetary rows work together due to the braking of the component, and the power is output from a three-row planetary carrier PC3, namely an output shaft, so that a parallel driving mode PD1 of Engine boosting, driving of the driving motor and the Engine is formed.
The parallel driving mode two PD2 is mainly used for low-speed running working conditions, and when the power of the pure electric driving mode is insufficient, the engine assists power.
In combination with the second brake B2 and the first clutch C1, the power of the driving motor MG is input through a row of sun gears S1, the Engine power is input from a row of sun gears S2, the three planetary rows work together due to the braking of the component (iv), and the power is output from a three-row planetary carrier PC3, namely an output shaft, so that a parallel driving mode PD2 in which the Engine is assisted and the driving motor and the Engine are driven together is formed.
The three PDRs in the parallel driving mode are mainly used for the reverse gear working condition, and when the power of the pure electric driving mode is insufficient, the engine assists.
By combining the first brake B1 and the third clutch C3, Engine power and driving motor MG power are input through a row of sun gears S1, and power is output from a three-row planet carrier PC3 (output shaft) because of the braking of the component, three planet rows work together, and a parallel driving mode PDR in which the Engine is assisted and the driving motor and the Engine are driven together is formed.
(3) The power split type series-parallel drive mode PS.
The power split type series-parallel driving mode can be used for working conditions of low speed, medium speed, high speed and the like.
By combining the first clutch C1, Engine power is input from a second-row sun gear S2, driving motor MG power is input from a first-row sun gear S1, three planetary rows work together, and power is output through an output shaft II. The output stepless speed change is realized by adjusting the rotating speed of the driving motor, and the engine and the driving motor are coupled and driven to form a power split type hybrid driving mode PS1 which is mainly used for low-speed and medium-speed running working conditions.
In combination with the second clutch C2, Engine power is input from a row of ring gears R1, driving motor MG power is input from a row of sun gears S1, the three planetary rows work together, and power is output through an output shaft II. The output stepless speed change is realized by adjusting the rotating speed of the driving motor, and the engine and the driving motor are coupled and driven to form a power split type hybrid driving mode PS2 which is mainly used for medium-speed and high-speed running working conditions.
(4) Forward mechanical gear operating conditions D1-D6.
And by combining the first clutch C1 and the first brake B1, the three-row gear ring R3 is braked, one row and the second row do not work, the three rows work, Engine power is input from the three-row sun gear S3, and power is output from the three-row planet carrier PC3, namely an output shaft, so that the first forward mechanical gear D1 is formed.
By combining the first clutch C1 and the second brake B2, the second-row gear ring R2 is braked, one row does not work, the second row and the third row form gears, power is output from an Engine, input from a second-row sun gear S2 and output from a third-row planet carrier PC3, namely an output shaft, so that a second forward mechanical gear D2 is formed.
By combining the first clutch C1 and the third brake B3, the first-row sun gear S1 brakes, the three planetary rows work together to form a gear, power is output from an Engine, the second-row sun gear S2 inputs power, and the power is output from a third-row planet carrier PC3, namely an output shaft, so that a third forward mechanical gear D3 is formed.
The first clutch C1 and the second clutch C2 are combined, the three planetary rows rotate integrally, power is output from an Engine, the three planetary rows work, and a fourth forward mechanical gear D4 is formed through the output of the three planetary carriers PC3, namely an output shaft, and the gear is a direct gear.
In combination with the second clutch C2 and the third brake B3, the sun gear S1 of one row is braked and the three planetary rows work together to form a gear, power is output from the Engine, input from the fifth member, and output through the third row of planet carrier PC3, i.e. the output shaft, to form the fifth forward mechanical gear D5, which is an overdrive gear.
And by combining the second clutch C2 and the second brake B2, the second-row gear ring R2 is braked, one row does not work, the second row and the third row form a gear, power is output from the Engine, is input from the second-row planet carrier PC2, and is output through the third-row planet carrier PC3, namely an output shaft, so that a sixth forward mechanical gear D6 is formed, and the gear is an overdrive gear.
(5) And working condition RD of the reverse mechanical gear.
The third clutch C3 and the first brake B1 are combined, the component is braked, the three rows work together to form a gear, power is input from an Engine and output from a three-row planet carrier PC3, namely an output shaft, so that a first reverse gear RD1 is formed.
The third clutch C3 and the second brake B2 are combined, the component IV brakes, the three rows work together to form a gear, power is input from an Engine, and is output from a three-row planet carrier PC3, namely an output shaft, so that a second reverse gear RD2 is formed.
(6) Series drive mode SE.
The engine drives the ISG motor to generate electricity, and the driving motor drives the vehicle to run through the power converter and the energy storage device, so that a series driving mode can be realized.
When the engine assists, the ISG motor can assist and drive in an auxiliary mode according to requirements.
The hybrid drive device can be used in a vehicle hybrid drive system after removing any one or more of the second brake B2, the third brake B3 and the third clutch C3, although the mechanical gear is reduced.
Each mode ratio set is determined by the internal gear ratios of the three planetary rows, i.e., the tooth ratios of the ring gear to the sun gear of the planetary rows, e.g., the three row k values, respectively, as set forth below.
A row of gear rings (R1) and one row of sun gears (S1): zR1/ZS1=3.5。
Second-row ring gear (R2) and second-row sun gear (S2): zR2/ZS2=2.5。
Three rows of ring gears (R3) and three rows of sun gears (S3): zR3/ZS3=2.5。
Table 1 shows the hybrid drive mode implementations and ratio ranges, and describes the controls that need to be engaged to achieve the modes. In the table, "√" indicates a manipulation member engagement.
Table 1 implements the operating member engagement sequence and gear ratio for each mode.
The above description is only one of the preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (7)

1. Two kinds of series-parallel connection formula oil-electricity hybrid drive arrangement that are applicable to commercial car, its characterized in that, a drive arrangement includes:
the system comprises an engine, an ISG motor, a damping shock absorber, a driving motor, a power converter, an energy storage device and a power coupling speed change device;
wherein the power coupling speed change device is characterized by comprising:
the power coupling speed change device consists of three planet rows, three clutches and three brakes;
the first planet row is an internal and external meshing single planet row and comprises a row of ring gears (R1), a row of planet carriers (PC 1), a row of sun gears (S1) and a row of planet gears (P1); a row of planet wheels (P1) are simultaneously meshed with a row of sun wheels (S1) and a row of ring gears (R1); a row of planet carriers (PC 1) supporting a row of planet wheels (P1);
the second planet row is an internal and external meshing single planet row and comprises a two-row ring gear (R2), a two-row planet carrier (PC 2), a two-row sun gear (S2) and a two-row planet gear (P2); the two-row planetary gear (P2) is simultaneously meshed with the two-row sun gear (S2) and the two-row ring gear (R2); the two-row planet carrier (PC 2) supports two-row planet wheels (P2);
the third planet row is an internal and external meshing single planet row and comprises three rows of gear rings (R3), three rows of planet carriers (PC 3), three rows of sun gears (S3) and three rows of planet gears (P3); the three rows of planet gears (P3) are simultaneously meshed with the three rows of sun gears (S3) and the three rows of ring gears (R3); the three-row planet carrier (PC 3) supports three rows of planet gears (P3);
a row of sun gears (S1) are fixedly connected with a driving Motor (MG), inner hubs of a third clutch (C3) and inner hubs of a third brake (B3), a row of planet carriers (PC 1) are fixedly connected with inner hubs of a second row of gear rings (R2) and a second brake (B2), and a row of gear rings (R1) are fixedly connected with inner hubs of a second clutch (C2), a second row of planet carriers (PC 2), a third row of gear rings (R3) and an inner hub of a first brake (B1);
the second row of sun gears (S2) is fixedly connected with an inner hub of the first clutch (C1) and the third row of sun gears (S3);
the three-row planet carrier (PC 3) is fixedly connected with an Output shaft (Output);
an output shaft of an Engine (Engine) is connected with an Integrated Starter Generator (ISG), and then is fixedly connected with an outer hub of a first clutch (C1), an outer hub of a second clutch (C2) and an outer hub of a third clutch (C3) through a damping vibration absorber (ZN);
the first brake (B1) outer hub, the second brake (B2) outer hub and the third brake (B3) outer hub are all fixed to the transmission housing.
2. Two series-parallel hybrid drives suitable for commercial vehicles according to claim 1, characterized in that the second drive configuration is substantially identical to the first one, with the difference that the second clutch (C2) no longer connects the engine output member to the member of the row of ring gears (R1), but the engine output member to the member of the row of planet carriers (PC 1).
3. Two series-parallel hybrid drives suitable for commercial vehicles according to claim 2, wherein by combining different operating members, both of these drives can realize different operating modes, including:
the first brake (B1) is combined to form a first pure electric driving mode of the driving motor;
in combination with the second brake (B2), a second pure electric drive mode of the drive motor can be formed;
in combination with the first brake (B1) and the first clutch (C1), a first parallel driving mode of an engine, an ISG motor and a driving motor can be formed;
the second brake (B2) and the first clutch (C1) are combined to form a second parallel driving mode of an engine, an ISG motor and a driving motor;
the first brake (B1) and the third clutch (C3) are combined, and the engine reverse gear assisting power can form a third parallel driving mode of the engine, the ISG motor and the driving motor;
in combination with the first clutch (C1), a power-split hybrid driving mode I of an engine, an ISG motor and a driving motor can be formed;
and in combination with the second clutch (C2), a power-split hybrid driving mode II of the engine, the ISG motor and the driving motor can be formed.
4. Two series-parallel hybrid drives suitable for commercial vehicles according to claim 3, wherein by combining different operating elements, both of these drives can achieve different mechanical gears, including:
a first mechanical gear can be formed by combining the first clutch (C1) and the first brake (B1);
a second mechanical gear can be formed by combining the first clutch (C1) and the second brake (B2);
a third mechanical gear can be formed by combining the first clutch (C1) and the third brake (B3);
in combination with the first clutch (C1) and the second clutch (C2), a fourth mechanical gear can be formed, and the gear is a direct gear;
a fifth mechanical gear is formed by combining the second clutch (C2) and the third brake (B3);
in combination with the second clutch (C2) and the second brake (B2), the first hybrid drive can form a sixth mechanical gear, and the second hybrid drive cannot form an active gear;
a first reverse gear can be formed by combining the third clutch (C3) and the first brake (B1);
in combination with the third clutch (C3) and the second brake (B2), a second reverse gear can be established.
5. Two series-parallel hybrid drives suitable for commercial vehicles according to claim 4, characterized in that they comprise:
the engine drives the ISG motor to generate electricity, and a series driving mode can be realized through the power converter or the energy storage device, so that the driving motor drives the vehicle to run.
6. Two series-parallel hybrid drives suitable for commercial vehicles according to claim 5, characterized by comprising:
when the ISG motor is replaced by other types of driving motors, the function of the hybrid driving device is unchanged; when any one or more of the second brake (B2), the third brake (B3) and the third clutch (C3) is removed, the hybrid drive unit can still be used in the vehicle powertrain.
7. The hybrid-electric hybrid drive unit of claim 6, further comprising a motor control unit, a battery controller and a power transmission control unit.
CN202010660183.5A 2020-07-10 2020-07-10 Two series-parallel type oil-electricity hybrid power driving devices suitable for commercial vehicle Pending CN111731089A (en)

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