CN113071305A - Three-planet-row hybrid power driving device - Google Patents

Three-planet-row hybrid power driving device Download PDF

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Publication number
CN113071305A
CN113071305A CN202110465221.6A CN202110465221A CN113071305A CN 113071305 A CN113071305 A CN 113071305A CN 202110465221 A CN202110465221 A CN 202110465221A CN 113071305 A CN113071305 A CN 113071305A
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planet
gear
power
row
sun gear
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CN202110465221.6A
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Chinese (zh)
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CN113071305B (en
Inventor
孙少华
陈浩
田哲
刘翔宇
公茂森
程子硕
王英睿
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Qingdao Kelin Zhichuan Automobile Technology Co ltd
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Qingdao Kelin Zhichuan Automobile Technology Co ltd
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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
    • 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
    • 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
    • B60K6/42—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 the architecture of the hybrid electric vehicle
    • 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)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a three-planet-row hybrid power driving device, which comprises: a drive device housing; an engine disposed inside the drive device housing; a power battery disposed inside the housing; the first motor and the second motor are respectively and electrically connected with the power battery; the first sun wheel shaft and the second sun wheel shaft are coaxially arranged, and the first sun wheel shaft is connected with the output end of the engine; a clutch disposed between the first and second sun shafts selectively engaging the first and second sun gears; a third sun gear shaft disposed coaxially with the first sun gear shaft and the second sun gear shaft; a three planetary gear train; the first gear ring is fixedly connected with the second planet carrier, and the second planet row and the third planet row share the second gear ring; a first brake; a second brake; a third brake; a differential mechanism. Through multiple working mode switching, each power source is guaranteed to all work in the high efficiency district.

Description

Three-planet-row hybrid power driving device
Technical Field
The invention relates to a three-planet-row hybrid power driving device, and belongs to the technical field of new energy automobiles.
Background
At present, new energy automobiles are hot spots of automobile development in all countries in the world. New energy vehicles are largely classified into pure electric vehicles, fuel cell vehicles, and hybrid vehicles. The problems of overlong charging time, insufficient cruising ability and the like of the pure electric vehicle exist; although the fuel cell vehicle can realize real zero pollution, the technical threshold of the fuel cell vehicle is very high, and the problems of slow starting speed, low catalytic efficiency, safety of fuel storage and the like exist.
Because both pure electric vehicles and fuel cell vehicles have the defect of being difficult to break through in a short period, hybrid electric vehicles become a good choice. Hybrid vehicle has two power supplies of engine and motor, combines high-efficient power to divide and converge mechanism, realizes increasing form electricity generation, guarantees that the engine works in optimum economic zone as far as possible, improves the duration of vehicle greatly, and abundant drive mode has guaranteed that the motor works in optimum efficiency district all the time to realize multiple drive mode, can effectively deal with various application scenes, guarantee that the vehicle all possesses outstanding dynamic property and energy-saving rate in any circumstance.
However, the structure of the traditional series-parallel hybrid power system is very complex, the control difficulty is high, and the problems of how to realize a high-efficiency range-extending mode, realize the quick switching of a driving mode, improve the transmission efficiency of the system, reduce the cost of the system and the like in the series-parallel hybrid power system are not effectively solved, so that the truly feasible series-parallel hybrid power system in the automobile industry in China is very old.
Disclosure of Invention
The three-planet-row hybrid power driving device is designed and developed, the transmission structure is simple, the transmission efficiency is high, various working modes are switched, all power sources work in a high-efficiency area, the optimal power effect and the optimal skill effect are achieved, the extremely high endurance mileage is realized, and the hybrid power driving device has more excellent hybrid power performance.
The technical scheme provided by the invention is as follows:
a three-planetary-row hybrid drive, comprising:
a drive device housing;
an engine disposed inside the drive device housing;
a power battery disposed inside the housing;
the first motor and the second motor are respectively and electrically connected with the power battery;
the first sun wheel shaft and the second sun wheel shaft are coaxially arranged, and the first sun wheel shaft is connected with the output end of the engine;
a clutch disposed between the first and second sun shafts to selectively engage the first and second sun gears;
a third sun gear shaft disposed coaxially with the first sun gear shaft and the second sun gear shaft;
a three-planet row gear train, comprising: the planetary gear set comprises a first planet row planet carrier, a first planet row sun gear, a first planet row planet gear, a first planet row gear ring, a second planet row planet carrier, a second planet row sun gear, a second planet row planet gear, a second planet row gear ring, a third planet row planet carrier, a third planet row sun gear and a third planet row planet gear;
the first motor is connected with a first planet carrier, the second motor is connected with a third planet carrier, the first planet sun gear is fixedly arranged on the first sun gear shaft, the second planet sun gear is fixedly arranged on the second sun gear shaft, and the third planet sun gear is fixedly arranged on a third sun gear shaft;
the first gear ring is fixedly connected with the second planet carrier, and the second planet row and the third planet row share the second gear ring;
a first brake disposed between the housing and the first sun gear shaft to selectively engage and disengage the housing with and from the first sun gear shaft;
a second brake disposed within the housing and between the first carrier to selectively engage and disengage the housing with the first carrier;
a third brake provided between the housing and the first ring gear to selectively engage and disengage the housing with and from the first ring gear;
and a differential mechanism provided at the other end in the case, the external teeth of the second ring gear being meshed with the differential mechanism.
Preferably, the differential mechanism includes:
a left half shaft and a right half shaft coaxially rotatably supported within the housing;
the differential assembly is simultaneously and rotatably connected with the left half shaft and the right half shaft and selectively outputs power;
a differential ring gear disposed on the differential assembly.
Preferably, the second ring gear is provided with external teeth on an outer surface thereof, the external teeth meshing with the differential ring gear and forming a differential gear pair.
Preferably, a torsional damper is provided between the engine and the first sun gear shaft.
Preferably, the method further comprises the following steps:
a first inverter provided between the power battery and the first motor;
a second inverter provided between the power battery and the second motor;
the power battery is connected with the first inverter and the second inverter through high-voltage wire harnesses respectively and further connected with the first motor and the second motor, and electric energy storage and shunting are achieved.
Preferably, the first motor and the second motor are both motor generators.
Preferably, the clutch is a coupling clutch.
The invention has the following beneficial effects:
the invention provides a hybrid power system based on three planetary gear configuration and combined with a clutch, three brakes, two motors and an engine through reasonable layout of a mechanical structure, and realizes a plurality of working modes through different combinations of the clutch and the brakes in a mode switching mechanism.
The invention can realize eleven working modes, including an engine quick start mode, a parking power generation mode, two pure electric drive modes, two hybrid drive modes, an engine direct drive mode, two engine shunt drive modes, an extended range hybrid drive mode and a braking energy recovery mode; in the engine quick starting mode, the first motor has the function of an ISG motor, and an engine starting motor is not required to be additionally arranged; the braking energy recovery mode can ensure that the braking energy is fully utilized, improve the efficiency and reduce the oil consumption; the invention also has an engine and double-motor combined driving mode (two-stage hybrid mode) as a motion mode or a trap-free mode of the automobile; the second motor single drive mode (primary pure electric mode) is used as a standby working mode when the first motor and the engine can not work normally.
The three-planetary-row hybrid power driving device provided by the invention is simple in structure, high in transmission efficiency, small in loss, higher in transmission efficiency, and has better hybrid power performance (dynamic property and economical efficiency), can ensure that each power source works in a high-efficiency area, realizes the aims of low emission and low energy consumption, and has higher endurance mileage.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the power transfer of the present invention in an engine rapid start mode.
Fig. 3 is a power transmission diagram in the parking power generation mode of the present invention.
FIG. 4 is a power transmission diagram of the present invention in a first-stage pure electric drive mode.
FIG. 5 is a schematic power transmission diagram in the two-stage pure electric drive mode.
Fig. 6 is a schematic power transmission diagram of the present invention in the engine-only driving mode.
FIG. 7 is a schematic diagram of power transmission in the extended range hybrid driving mode according to the present invention.
Fig. 8 is a power transmission diagram of the present invention in the engine power-split drive mode.
Fig. 9 is a power transmission diagram of the present invention in the engine and second electric machine split combined driving mode.
Fig. 10 is a power transmission diagram of the present invention in a one-stage hybrid driving mode.
FIG. 11 is a schematic power transmission diagram of the present invention in a two-stage hybrid drive mode.
FIG. 12 is a schematic power transmission diagram of the present invention in a braking energy recovery mode.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
As shown in fig. 1 to 12, the present invention provides a three-planetary-row hybrid driving apparatus, which combines a hybrid system including a clutch, three brakes, two motors and an engine based on a three-planetary-row configuration, and implements a plurality of operation modes through different combinations of the clutch and the brake in a mode switching mechanism, and specifically includes: the power system, the power splitting and converging mechanism, the mode switching mechanism, the torsional damper 29, the first sun gear shaft 28, the second sun gear shaft 16, the third sun gear shaft 14, the differential gear 21 and the differential assembly 20.
As shown in fig. 1, the power system includes: the system comprises an engine 1, a first motor 26, a second motor 12, a first inverter 4, a second inverter 11 and a power battery 8; wherein, one end of the first sun gear shaft 28 is connected with the output end of the engine 1, the torsional damper 29 is arranged between the engine 1 and the first sun gear shaft 28, and the engine 1 inputs power to the first sun gear shaft 28 through the torsional damper 29; the first motor 26 is connected with the first planet carrier 3, and the second motor 12 is connected with the third planet carrier 15; the power battery 8 is respectively connected with the first inverter 4 and the second inverter 11 through high-voltage wire harnesses, and further connected with the first motor 26 and the second motor 12, so that the functions of storing and shunting electric energy are realized.
In the present invention, it is preferable that the first motor 26 and the second motor 12 are electric-power generating integrated machines.
The first sun gear shaft 28, the second sun gear shaft 16 and the third sun gear shaft 14 are coaxially arranged, and the first sun gear shaft 28 is in power connection with the engine 1 through a torsional damper 29; the external gear of the second gear ring 18 is externally meshed with a differential gear 21 to form a differential gear pair, the differential gear 21 is fixedly arranged on a differential assembly 20, and the differential assembly 20 outputs power through a left half shaft 22 and a right half shaft 19.
The power distribution and convergence mechanism is a three-planet-row gear train, comprising: a first planet row, a second planet row, and a third planet row, wherein the first planet row comprises: a first sun gear 5, a first planet carrier 3, a first ring gear 9 and a first planet wheel 6, the second planet row comprising: a second sun gear 24, a second planet carrier 25, a second ring gear 18, and second planet gears 23, the third planet row comprising: a third sun gear 12, a third carrier 15, a second ring gear 18 and a third planet gear 17, the first sun gear 5 being fixed to a first sun gear shaft 28, the second sun gear 24 being fixed to a second sun gear shaft 16, the third sun gear 13 being fixed to a third sun gear shaft 14; the first gear ring 9 is fixedly connected with the second planet carrier 25, and the second planet row and the third planet row share the second gear ring 18; the second ring gear 18 is externally provided with external teeth and meshes with the differential gear 21.
The mode switching mechanism includes: the clutch 10 is arranged between the first sun gear shaft 28 and the second sun gear shaft 16 and used for controlling the power connection between the first sun gear 5 and the second sun gear 24, the first brake 2 is arranged on the inner wall of the shell and used for controlling whether the first sun gear shaft 28 is locked, the second brake 27 is arranged on the inner wall of the shell and used for controlling whether the first planet carrier 3 is locked, and the third brake 7 is arranged on the inner wall of the shell and used for controlling whether the first gear ring 9 and the second planet carrier 25 are locked.
The clutch 10 is arranged between the first sun gear shaft 28 and the second sun gear shaft 16 and is used for controlling the first sun gear 5 to be in power connection with the second sun gear 24; the first brake 2 is disposed between the housing and the first sun gear shaft 28 to selectively engage and disengage the housing with and from the first sun gear shaft 28; a second brake 27 provided between the housing and the first carrier 3 for selectively engaging and disengaging the housing with and from the first carrier 3; the third brake 7 is provided between the housing and the first ring gear 9, and selectively engages and disengages the housing and the first ring gear 9.
Through the work of the mode switching mechanism, the three-planet-row hybrid power driving device can realize eleven working modes such as quick engine starting, parking power generation, primary pure electric drive (independent drive of the second motor 12), secondary pure electric drive (double-motor combined drive), independent drive of the engine, extended range type hybrid drive, engine power split type drive, split type combined drive of the engine and the second motor, primary hybrid drive (combined drive of the engine 1 and the second motor 12), secondary hybrid drive (combined drive of the engine 1, the first motor 26 and the second motor 12), and braking energy recovery.
The states of the clutches and brakes in the three-planetary-row hybrid drive apparatus in various operating modes are shown in table 1:
TABLE 1 Clutch and brake states in various operating modes
Figure BDA0003043528180000061
(Note: 1-indicates that the clutch and the brake are engaged; 0-indicates that the clutch and the brake are disengaged)
The power source conditions of the three-planetary-row hybrid power driving device provided by the invention under various working modes are shown in table 2:
TABLE 2 Power Source Condition under various operating modes
Figure BDA0003043528180000071
The following will further explain various operation modes of the three planetary row hybrid driving apparatus of the present invention in specific embodiments with reference to tables 1 and 2.
Example 1
Engine fast start mode:
as shown in fig. 2, the clutch 10 is in the disengaged state, the third brake 7 is in the braking state, and the first brake 2 and the second brake 27 do not brake. The first motor 26 obtains electric energy from the power battery 8 to generate power and transmits the power to the first planet carrier 3, the first planet carrier 3 transmits the power to the first sun gear 5 through the first planet gear 6, and the first sun gear 5 transmits the power to the engine 1 through the torsional damper 29 to reach the optimal starting rotating speed, so that the engine quick starting mode is realized.
Example 2
Parking power generation mode:
as shown in fig. 3, the clutch 10 is in the disengaged state, the third brake 7 is in the braking state, and the first brake 2 and the second brake 27 do not brake. The engine 1 transmits power to the first sun gear 5 through the torsion damper 29 and the first sun gear shaft 28, the first sun gear 5 transmits power to the first planet carrier 3 through the first planet gear 6, the first planet carrier 3 transmits power to the first motor 26, the first motor 26 converts the power into electric energy and stores the electric energy in the power battery 8, and a parking power generation mode is realized.
Example 3
A first-stage pure electric drive mode:
as shown in fig. 4, when the entire vehicle is in the medium-speed and medium-power driving condition, the clutch 10 is in the disengaged state, the first brake 2, the second brake 27, and the third brake 7 are not braked, and the engine 1 and the first motor 26 are in the off state. The second motor 12 obtains electric energy from the power battery 8 to generate power and transmits the power to the third planet carrier 15, the third planet carrier 15 transmits the power to the second gear ring 18 through the third planet gear 17, the second gear ring 18 transmits the power to the differential gear 21, and the differential gear 21 transmits the power to the left half shaft 22 and the right half shaft 19 through the differential assembly 20, so that a one-stage pure electric driving mode is realized.
Example 4
And a secondary pure electric drive mode:
as shown in fig. 5, when the whole vehicle is in a middle-low speed and ultra-large torque or middle-high speed and high power running condition, the clutch 10 is in an engaged state, the first brake 2 is in a braking state, the second brake 27 and the third brake 7 are not in braking, and the engine is in a closed state. The first motor 26 obtains electric energy from the power battery 8 to generate power and transmits the power to the first planet carrier 3, the first planet carrier 3 transmits the power to the first gear ring 9 through the first planet wheel 6, the first gear ring 9 transmits the power to the second planet carrier 25, the second planet carrier 25 transmits the power to the second gear ring 18 through the second planet wheel 23, the second motor 12 obtains electric energy from the power battery 8 to generate power and transmits the power to the third planet carrier 15, the third planet carrier 15 transmits the power to the second ring gear 18 through the third planet wheel 17, the second ring gear 18 superposes the power from the first motor 26 and the second motor 12 and transmits the superposed power to the differential gear 21, and the differential gear 21 transmits the power to the left half shaft 22 and the right half shaft 19 through the differential assembly 20, so that a two-stage pure electric driving mode is realized.
Example 5
Engine-only drive mode:
as shown in fig. 6, when the entire vehicle is in a medium-high speed large-power driving condition and the power of the power supply is higher than the preset value, the clutch 10 is in an engaged state, the second brake 27 is in a braking state, the first brake 2 and the third brake 7 are not braking, and the first motor 26 and the second motor 12 are in a closed state. The engine 1 transmits one path of power to the first sun gear 5 through the torsion damper 29 and the first sun gear shaft 28, the first sun gear 5 transmits the power to the first gear ring 9 through the first planetary gear 6, the first gear ring 9 transmits the power to the second planetary carrier 25, the other path of power is transmitted to the second sun gear 16 through the clutch 10, the second gear ring 18 superposes the two paths of power and transmits the superposed power to the differential gear 21, and the differential gear 21 transmits the power to the left half shaft 22 and the right half shaft 19 through the differential assembly 20, so that the independent mode of the engine is realized.
Example 6
Extended range hybrid drive mode:
as shown in fig. 7, when the entire vehicle is in a medium-low speed high-torque driving condition and the electric quantity of the power supply is lower than a preset value, the clutch 10 is in a disengaged state, the third brake 7 is in a braking state, and the first brake 2 and the second brake 27 do not brake. The engine 1 transmits power to the first sun gear 5 through the torsional damper 29 and the first sun gear shaft 28, the first sun gear 5 transmits power to the first planet carrier 3 through the first planet gear 6, the first planet carrier 3 transmits power to the first motor 26, the first motor 26 converts the power into electric energy to be preferentially supplied to the second motor 12 for operation, and the rest of the electric energy is stored in the power battery 8. The second motor 12 is powered by the first motor 26 and the power battery 8 to generate power and transmit the power to the third planet carrier 15, the third planet carrier 15 transmits the power to the second ring gear 18 through the third planet gear 17, the second ring gear 18 transmits the power to the differential gear 21, and the differential gear 21 transmits the power to the left half shaft 22 and the right half shaft 19 through the differential assembly 20, so that the range-increasing hybrid driving mode is realized.
Example 7
Engine power split drive mode:
as shown in fig. 8, when the entire vehicle is in a medium-speed and medium-power running condition, but the electric quantity of the power battery is lower than a preset value, the clutch 10 is in an engaged state, the third brake 7 is in a braking state, and the first brake 2 and the second brake 27 do not brake. The engine 1 transmits power to the first sun gear 5 through the torsion damper 29, the first sun gear shaft 28 transmits power to the first sun gear 5, the first planet gear 5 transmits power to the first planet carrier 3 through the first planet gear 6, the first planet carrier 3 transmits power to the first motor 26, and the first motor 26 converts the power into electric energy and stores the electric energy in the power battery 8. The other path is transmitted to a second sun gear 16 through a clutch 10, the second sun gear 16 transmits power to a second gear ring 18, the second gear ring 18 transmits power to a differential gear 21, and the differential gear 21 transmits power to a left half shaft 22 and a right half shaft 19 through a differential assembly 20, so that the power-split driving mode of the engine is realized.
Example 8
The engine and the second motor are driven in a shunting and combined mode:
as shown in fig. 9, when the entire vehicle is in a high-speed high-power driving condition and the electric quantity of the power battery 8 is lower than a preset value, the clutch 10 is in an engaged state, the third brake 7 is in a braking state, and the first brake 2 and the second brake 27 do not brake. The engine 1 transmits power to the first sun gear 5 through the torsion damper 29, the first sun gear 5 transmits the power to the first planet carrier 3 through the first planet gear 6, the first planet carrier 3 transmits the power to the first motor 26, the first motor 26 converts the power into electric energy to be preferentially supplied to the second motor 12 for operation, and the rest of the electric energy is stored in the power battery 8. The other path is transmitted to the second sun gear 16 via the clutch 10, and the second sun gear 16 transmits power to the second ring gear 18. In addition, the second motor 12 is powered by the first motor 26 and the power battery 8 jointly to generate power and transmit the power to the third planet carrier 15, the third planet carrier 15 transmits the power to the second ring gear 18 through the third planet gear 17, the second ring gear 18 superposes the power from the engine 1 and the second motor 12 and transmits the superposed power to the differential gear 21, and the differential gear 21 transmits the power to the left half shaft 22 and the right half shaft 19 through the differential assembly 20, so that the split-flow type combined driving mode of the engine and the second motor is realized.
Example 9
First-stage hybrid drive mode:
as shown in fig. 10, when the entire vehicle is in a high-speed high-power driving condition and the power battery capacity is higher than the preset value, the clutch 10 is in an engaged state, the second brake 27 is in a braking state, and the first brake 2 and the third brake 7 do not brake. The engine 1 transmits one path of power to the first sun gear 5 through the first sun gear shaft 28 via the torsional damper 29, the first sun gear 5 transmits the power to the first gear ring 9 via the first planet gear 6, the first gear ring 9 transmits the power to the second planet carrier 25, the other path of power is transmitted to the second sun gear 16 via the clutch 10, and the two paths of power are superposed and then transmitted to the second gear ring 18. In addition, the second motor 12 obtains electric energy from the power battery 8 to generate power and transmits the power to the third planet carrier 15, the third planet carrier 15 transmits the power to the second ring gear 18 through the third planet gear 17, the second ring gear 18 superposes the power from the engine 1 and the second motor 12 and transmits the superposed power to the differential gear 21, and a first-stage hybrid driving mode is realized.
Example 10
Two-stage hybrid drive mode:
as shown in fig. 11, when the entire vehicle is in a high-speed and ultra-high-power driving condition and the power battery capacity is higher than a preset value, the clutch 10 is in a combined state, and the first brake 2, the second brake 27 and the third brake 7 do not brake. The engine 1 transmits power to the first sun gear 5 through the torsional damper 29, the first motor 26 obtains electric energy from the power battery 8 to generate power and transmits the power to the first planet carrier 3, the first ring gear 9 transmits the power from the engine 1 and the 1 st motor 26 after being superposed to the second planet carrier 25, the other power of the engine 1 is transmitted to the second sun gear 16 through the clutch 10, and the power from the second planet carrier 25 and the second sun gear 16 is superposed and transmitted to the second ring gear 18. In addition, the second motor 12 obtains electric energy from the power battery 8 to generate power and transmits the power to the third planet carrier 15, the third planet carrier 15 transmits the power to the second ring gear 18 through the third planet gear 17, the second ring gear 18 superposes the power from the engine 1, the first motor 26 and the second motor 12 and transmits the superposed power to the differential gear 21, and a two-stage hybrid driving mode is realized.
Example 11
A braking energy recovery mode:
as shown in fig. 12, when the entire vehicle is in a braking condition and the electric quantity of the power battery is lower than the preset value, the clutch 10 is in a disengaged state, the first brake 2, the second brake 27 and the third brake 7 are not braked, and the engine 1 and the first motor 26 are in an off state. The kinetic energy of the whole vehicle is transmitted to a differential assembly 20 by a left half shaft 22 and a right half shaft 19, the differential assembly 20 transmits power to a second ring gear 18 through a differential gear 21, the second ring gear 18 transmits the power to a third planet carrier 15 through a third planet gear 17, the third planet carrier 15 transmits the power to a second motor 12, the second motor 12 converts the power into electric energy and stores the electric energy into a power battery 8, and a braking energy recovery mode is realized.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (7)

1. A three-planetary-row hybrid drive, comprising:
a drive device housing;
an engine disposed inside the drive device housing;
a power battery disposed inside the housing;
the first motor and the second motor are respectively and electrically connected with the power battery;
the first sun wheel shaft and the second sun wheel shaft are coaxially arranged, and the first sun wheel shaft is connected with the output end of the engine;
a clutch disposed between the first and second sun shafts to selectively engage the first and second sun gears;
a third sun gear shaft disposed coaxially with the first sun gear shaft and the second sun gear shaft;
a three-planet row gear train, comprising: the planetary gear set comprises a first planet row planet carrier, a first planet row sun gear, a first planet row planet gear, a first planet row gear ring, a second planet row planet carrier, a second planet row sun gear, a second planet row planet gear, a second planet row gear ring, a third planet row planet carrier, a third planet row sun gear and a third planet row planet gear;
the first motor is connected with a first planet carrier, the second motor is connected with a third planet carrier, the first planet sun gear is fixedly arranged on the first sun gear shaft, the second planet sun gear is fixedly arranged on the second sun gear shaft, and the third planet sun gear is fixedly arranged on a third sun gear shaft;
the first planet row and the second planet carrier are fixedly connected, and the second planet row and the third planet row share the second gear ring;
a first brake disposed between the housing and the first sun gear shaft to selectively engage and disengage the housing with and from the first sun gear shaft;
a second brake provided between the housing and the first carrier to selectively engage and disengage the housing with and from the first carrier;
a third brake provided between the housing and the first ring gear to selectively engage and disengage the housing with and from the first ring gear;
a differential mechanism disposed inside the case, the second ring gear being meshed with the differential mechanism.
2. The three-planetary-row hybrid drive arrangement according to claim 1, wherein the differential mechanism comprises:
a left half shaft and a right half shaft coaxially rotatably supported within the housing;
the differential assembly is simultaneously and rotatably connected with the left half shaft and the right half shaft and selectively outputs power;
a differential ring gear disposed on the differential assembly.
3. A three planetary row hybrid drive as claimed in claim 2, wherein the second ring gear is provided on its outer surface with external teeth which mesh with the differential ring gear and form a differential gear pair.
4. The three planetary row hybrid drive of claim 3, wherein a torsional damper is disposed between the engine and the first sun gear shaft.
5. The three-row planetary hybrid drive as claimed in claim 4, further comprising:
a first inverter provided between the power battery and the first motor;
a second inverter provided between the power battery and the second motor;
the power battery is connected with the first inverter and the second inverter through high-voltage wire harnesses respectively and further connected with the first motor and the second motor, and electric energy storage and shunting are achieved.
6. The three planetary row hybrid drive of claim 5, wherein the first and second electric machines are each a motor-generator.
7. The three planetary row hybrid drive of claim 6, wherein the clutch is a clutched clutch.
CN202110465221.6A 2021-04-28 2021-04-28 Three-planet-row hybrid power driving device Active CN113071305B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180304744A1 (en) * 2017-04-21 2018-10-25 Jilin University Dual-motor coupling drive axle with torque vectoring function
CN111114288A (en) * 2020-01-23 2020-05-08 广州市新域动力技术有限公司 Planetary wheel coaxial type double-planet-row hybrid power system
WO2020186399A1 (en) * 2019-03-15 2020-09-24 舍弗勒技术股份两合公司 Power split-type hybrid power system and hybrid power vehicle
CN112224007A (en) * 2020-10-26 2021-01-15 东风汽车集团有限公司 Special multi-mode hybrid transmission

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180304744A1 (en) * 2017-04-21 2018-10-25 Jilin University Dual-motor coupling drive axle with torque vectoring function
WO2020186399A1 (en) * 2019-03-15 2020-09-24 舍弗勒技术股份两合公司 Power split-type hybrid power system and hybrid power vehicle
CN111114288A (en) * 2020-01-23 2020-05-08 广州市新域动力技术有限公司 Planetary wheel coaxial type double-planet-row hybrid power system
CN112224007A (en) * 2020-10-26 2021-01-15 东风汽车集团有限公司 Special multi-mode hybrid transmission

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