CN108944405B - Hybrid electric driving device - Google Patents

Hybrid electric driving device Download PDF

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Publication number
CN108944405B
CN108944405B CN201810811430.XA CN201810811430A CN108944405B CN 108944405 B CN108944405 B CN 108944405B CN 201810811430 A CN201810811430 A CN 201810811430A CN 108944405 B CN108944405 B CN 108944405B
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gear
planet
hybrid electric
speed change
clutch element
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CN108944405A (en
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曾庆文
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Shenzhen Xingkang Powertrain Co ltd
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Shenzhen Xingkang Powertrain Co ltd
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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
    • B60K6/24Arrangement 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 combustion engines
    • 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
    • B60K6/26Arrangement 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 motors or the generators
    • 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
    • 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
    • B60K6/22Arrangement 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
    • B60K6/38Arrangement 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
    • 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
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles

Abstract

The present invention provides a hybrid electric drive device comprising: the system comprises an engine, a first motor, a second motor, a shunt speed change mechanism and a drive speed change mechanism; the split speed change mechanism comprises a first planet row, a second planet row, a first gear shift clutch element and a second gear shift clutch element, the first planet row comprises a first sun gear, a first planet carrier and a first gear ring, the second planet row comprises a second sun gear, a second planet carrier and a second gear ring, the engine is connected with the first planet carrier, the first motor is connected with the first sun gear, and the first planet carrier is connected with the second sun gear; the driving speed change mechanism comprises a third planet row, a third gear shift brake element and a fourth gear shift brake element, the power of the second motor is converged with the power output by the second planet carrier after passing through the driving speed change mechanism and then is output to drive the vehicle, and the gear switching is carried out through the arranged shunting speed change mechanism and the driving speed change mechanism, so that the performance of the hybrid electric driving device is improved.

Description

Hybrid electric driving device
Technical Field
The invention relates to the technical field of vehicle driving, in particular to a hybrid electric driving device.
Background
The existing power-split hybrid electric drive device based on the planet row utilizes the planet row to divide the power of an engine into two paths, one path of power flow drives a first motor to generate electricity, and the other path of power flow converges with the power output of a second motor to drive a vehicle. However, such a structural configuration has the following disadvantages: 1) the engine cannot directly drive the vehicle, particularly at high speeds, and therefore is less energy efficient; 2) the highest speed in the pure electric running mode is limited by the highest rotating speed of the first motor, so that the highest speed is lower, and the higher performance requirement cannot be met; 3) only one power split ratio is available, so that the performance in a wide vehicle speed range in a hybrid driving mode is difficult to ensure to be better; 4) and in the pure electric running mode, only the second motor is used for driving the vehicle after speed reduction, and the efficiency is lower when the highest vehicle speed in the mode is increased.
It would therefore also be desirable to provide a power-split hybrid electric drive with improved overall performance that addresses at least one of the above-mentioned problems.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a hybrid electric drive device which is provided with a shunt speed change mechanism and a drive speed change mechanism and can realize flexible gear switching.
The invention provides a hybrid electric drive device, which comprises an engine, a first motor, a second motor, a shunt speed change mechanism and a drive speed change mechanism, wherein the engine is connected with the first motor through a first transmission line; the split speed change mechanism comprises a first planet row, a second planet row, a first gear shift clutch element and a second gear shift clutch element, wherein the first planet row comprises a first sun gear, a first planet carrier and a first gear ring; the second planet row comprises a second sun gear, a second planet carrier and a second gear ring; the engine is connected with the first planet carrier, and the first motor is connected with the first sun gear; the first planet carrier is connected with the second sun gear; the first gear ring is connected with the second gear ring through the first gear shifting clutch element; the first ring gear is connected with the second planet carrier through the second gear shifting clutch element; the driving speed change mechanism comprises a third planet carrier, a third gear shift braking element and a fourth gear shift braking element, and the power of the second motor is converged with the power output by the second planet carrier after passing through the driving speed change mechanism and then is output to drive the vehicle.
Preferably, the third planet row comprises a third small sun gear, a third large sun gear, a third planet carrier, a third ring gear, a third short planet gear and a third long planet gear; the third short planet wheel is respectively in meshing transmission with the third small sun wheel and the third long planet wheel; the third long planet gear is also in meshing transmission with the third large sun gear; the third gear ring is in meshing transmission with the third long planet gear; the third shift brake element is used for braking the third ring gear; the fourth gear shifting brake element is used for braking the third small sun gear; the second motor is connected with the third large sun gear; the third planet carrier is connected with the second planet carrier.
Preferably, the first motor, the second motor, the split transmission mechanism, and the drive transmission mechanism are disposed coaxially with the engine.
Preferably, the first shifting clutch element and the second shifting clutch element are both in a disengaged state, and the second electric machine drives the vehicle.
Preferably, the first shifting clutch element and the second shifting clutch element are both in an engaged state, and the engine directly drives the vehicle.
Preferably, the hybrid electric drive has a first power split mode; and in the first power distribution mode, the first shift clutch element is engaged, the second shift clutch element is disengaged, and the first planetary row and the second planetary row determine a first power distribution ratio.
Preferably, the hybrid electric drive has a second power split mode; and in the second power distribution mode, the first gear shifting clutch element is disengaged, the second gear shifting clutch element is engaged, and the first planetary row determines a second power distribution ratio.
Preferably, the hybrid electric drive device has a high gear mode in which the fourth shift brake element is locked and the drive transmission mechanism realizes a high gear; the hybrid electric drive device has a low gear mode in which the third shift brake element is locked and the drive transmission mechanism realizes a low gear.
Preferably, the split transmission mechanism and the drive transmission mechanism shift gears in a time-sharing manner during the running of the vehicle.
According to the hybrid electric drive device, the gear switching is carried out through the shunting speed change mechanism and the driving speed change mechanism, so that the performance of the hybrid electric drive device is improved.
Drawings
Fig. 1 is a schematic system diagram of a hybrid electric drive device according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the hybrid electric drive device 20 includes an engine 1, a first electric machine 2, a second electric machine 3, a split speed change mechanism 4, and a drive speed change mechanism 8; the split transmission 4 includes a first planetary gear set 5, a second planetary gear set 6, a first shift clutch element 71, and a second shift clutch element 72, the first planetary gear set 5 includes a first sun gear 51, a first carrier 52, and a first ring gear 53, and the second planetary gear set 6 includes a second sun gear 61, a second carrier 62, and a second ring gear 63; the engine 1 is connected with the first planet carrier 52, and the first motor 2 is connected with the first sun gear 51; the first carrier 52 is connected to the second sun gear 61; the first ring gear 53 is connected to the second ring gear 63 via a first shift clutch element 71; the first ring gear 53 is connected to the second carrier 62 via a second shift clutch element 72; the driving speed change mechanism 8 comprises a third planet row 9, a third gear shift brake element 10 and a fourth gear shift brake element 11, and the power of the second motor 3 is output to drive the vehicle after being converged with the power output by the second planet carrier 62 after driving the speed change mechanism 8.
Preferably, the third planetary row 9 includes a third small sun gear 91, a third large sun gear 92, a third planet carrier 93, a third ring gear 94, a third short planet gear 95 and a third long planet gear 96, the third short planet gear 95 is in mesh transmission with the third small sun gear 91 and the third long planet gear 96 respectively, the third long planet gear 96 is also in mesh transmission with the third large sun gear 92, the third ring gear 94 is in mesh transmission with the third long planet gear 96, the third gear shift brake element 10 is used for braking the third ring gear 94, the fourth gear shift brake element 11 is used for braking the third small sun gear 91, the second electric machine 3 is connected with the third large sun gear 92, and the third planet carrier 93 is connected with the second planet carrier 62. The third planet row 9 is a compound planet row, which may also be other types of planet rows.
Preferably, the first motor 2, the second motor 3, the split transmission mechanism 4, and the drive transmission mechanism 8 are disposed coaxially with the engine 1.
Preferably, the first shifting clutch element 71 and the second shifting clutch element 72 are both in a disengaged state, and the second electric machine 3 drives the vehicle.
For example, in the electric-only driving mode, the engine 1 is off, the first shift clutch element 71 and the second shift clutch 72 are disengaged, and only the second electric machine 3 drives the vehicle to run. The maximum vehicle speed in this mode can be increased since it is no longer limited by the maximum rotational speed of the first electric machine 2.
Preferably, both the first shifting clutch element 71 and the second shifting clutch element 72 are in an engaged state, and the engine 1 directly drives the vehicle.
For example, in the hybrid driving mode, when both the first shift clutch element 71 and the second shift clutch element 72 are engaged, the first planetary gear set 5 and the second planetary gear set 6 rotate integrally, and the power split is not performed, and the power of the engine 1 directly drives the vehicle, thereby improving the efficiency. At this time, the first motor 2 and the second motor 3 may operate in a motoring, generating, or other mode.
Preferably, the hybrid electric drive 20 has a first power split mode; and in the first power split mode, the first shift clutch element 71 is engaged, the second shift clutch element 72 is disengaged, and the first planetary row 5 and the second planetary row 6 determine the first power split ratio.
From the kinematic equations of the first planetary row 5 and the second planetary row 6, the following kinematic and dynamic equations (1) and (2) can be obtained after analysis:
(1)
(2)
in the formula:n m1n outn eT m1T outT ek 1k 2the rotational speed of the first electric machine 2, the rotational speed of the output, the rotational speed of the engine 1, the torque of the first electric machine 2, the torque of the output, the torque of the engine 1, the structural characteristic variables of the first planetary gear set 5 and the structural characteristic variables of the second planetary gear set 6 are provided, respectively, wherein the output is the second planetary gear set shown in fig. 1A frame 62.
As can be seen from equations (1) and (2), the first power distribution ratio is determined by the first planetary row 5 and the second planetary row 6 in common.
Preferably, the hybrid electric drive 20 has a second power split mode; and in the second power split mode, the first shift clutch element 71 is disengaged, the second shift clutch element 72 is engaged, and the first planetary row 5 determines the second power split ratio.
When the first shifting clutch element 71 is disengaged and the second shifting clutch element 72 is engaged, the second planetary gear set 6 is at idle, so that only the first planetary gear set 5 has a power split function. From the kinematic equation of the first planet row 5, the following kinematic and kinetic equations (3) and (4) can be obtained after analysis:
n m1+ k 1 n out =(1+ k 1n e (3)
T m1:T out:T e=1:k 1:(1+ k 1) (4)
in the formula:n m1n outn eT m1T outT ek 1the rotational speed of the first electric machine 2, the rotational speed of the output, i.e. the second planet carrier 62 as shown in fig. 1, the rotational speed of the engine 1, the torque of the first electric machine 2, the torque of the output, i.e. the torque of the engine 1, and the structural characteristic parameters of the first planet carrier 5 are respectively.
As can be seen from equations (3) and (4), the second power distribution ratio is determined solely by the first planetary row 5.
Preferably, the hybrid electric drive device 20 has a high gear mode in which the fourth gearshift braking element 11 is locked to drive the transmission mechanism 8 to achieve the high gear; the hybrid electric drive 20 has a low gear mode in which the third shift brake element 10 is locked and drives the transmission 8 to a low gear.
The gear ratios of the low gear and the high gear are respectively shown as formulas (5) and (6):
1+ k 4 (5)
1+ k 4/ k 3 (6)
in the formula:k 3andk 4two structural characteristic parameters of the third planetary row 9, respectively, whereink 3Is the gear ratio of the third ring gear 94 to the third small sun gear 91,k 4is the gear ratio of the third ring gear 94 to the third large sun gear 92.
Preferably, during the running process of the vehicle, the split transmission mechanism 4 and the driving transmission mechanism 8 shift gears in a time-sharing manner, i.e. the two transmission mechanisms are prevented from shifting gears simultaneously, and the transmission mechanism which is not shifted can continuously drive the vehicle by using the power of the power machine connected with the transmission mechanism, so that the power interruption is avoided.
For example, in the electric-only running mode, when the transmission mechanism 8 is driven to shift gears, the first shift clutch element 71 or the second shift clutch element 72 is temporarily engaged, and the first electric machine 2 supplies power to perform power compensation. When the first shift clutch element 71 or the second shift clutch element 72 is temporarily engaged, the first electric machine 2 provides a suitable power output, and the power output is output from the second carrier 62 to drive the vehicle and drive the transmission mechanism 8 to shift gears without dragging the engine 1 to rotate.
Also for example, in the hybrid running mode, when the split transmission mechanism 4 is shifted, the second motor 3 outputs power to continue driving the vehicle, avoiding power interruption.
As shown in fig. 1, the first motor 2, the second motor 3, the split transmission mechanism 4, and the drive transmission mechanism 8 are disposed coaxially with the engine 1. It may be a partial component disposed coaxially with the engine 1, or a partial component disposed parallel to the engine 1, but not limited thereto.
The hybrid electric drive device according to the embodiment of the present invention is particularly suitable for a longitudinal engine vehicle, but is not limited thereto.
The hybrid electric drive device comprises an engine, a first motor, a second motor, a shunt speed change mechanism and a drive speed change mechanism; the split speed change mechanism comprises a first planet row, a second planet row, a first gear shift clutch element and a second gear shift clutch element, wherein the first planet row comprises a first sun gear, a first planet carrier and a first gear ring; the second planet row comprises a second sun gear, a second planet carrier and a second gear ring; the engine is connected with the first planet carrier, and the first motor is connected with the first sun gear; the first planet carrier is connected with the second sun gear; the first gear ring is connected with the second gear ring through a first gear shifting clutch element; the first gear ring is connected with the second planet carrier through a second gear shifting clutch element; the driving speed change mechanism comprises a third planet carrier, a third gear shift braking element and a fourth gear shift braking element, and the power of the second motor is converged with the power output by the second planet carrier after driving the speed change mechanism and then is output to drive the vehicle. The split-flow speed change mechanism and the driving speed change mechanism are arranged to switch gears, so that the performance of the hybrid electric drive device is improved.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (8)

1. A hybrid electric drive, characterized by: the system comprises an engine, a first motor, a second motor, a shunt speed change mechanism and a drive speed change mechanism; the split speed change mechanism comprises a first planet row, a second planet row, a first gear shift clutch element and a second gear shift clutch element, wherein the first planet row comprises a first sun gear, a first planet carrier and a first gear ring; the second planet row comprises a second sun gear, a second planet carrier and a second gear ring; the engine is connected with the first planet carrier, and the first motor is connected with the first sun gear; the first planet carrier is connected with the second sun gear; the first gear ring is connected with the second gear ring through the first gear shifting clutch element; the first ring gear is connected with the second planet carrier through the second gear shifting clutch element; the driving speed change mechanism comprises a third planet carrier, a third gear shifting brake element and a fourth gear shifting brake element, and the power of the second motor is converged with the power output by the second planet carrier after passing through the driving speed change mechanism and then is output to drive the vehicle; the third planet row comprises a third small sun gear, a third large sun gear, a third planet carrier, a third gear ring, a third short planet wheel and a third long planet wheel; the third short planet wheel is respectively in meshing transmission with the third small sun wheel and the third long planet wheel; the third long planet gear is also in meshing transmission with the third large sun gear; the third gear ring is in meshing transmission with the third long planet gear; the third shift brake element is used for braking the third ring gear; the fourth gear shifting brake element is used for braking the third small sun gear; the second motor is connected with the third large sun gear; the third planet carrier is connected with the second planet carrier.
2. The hybrid electric drive of claim 1, wherein: the first motor, the second motor, the shunt speed change mechanism, the drive speed change mechanism and the engine are coaxially arranged.
3. The hybrid electric drive of claim 1, wherein: the first shifting clutch element and the second shifting clutch element are both in a disengaged state, and the second motor drives the vehicle.
4. The hybrid electric drive of claim 1, wherein: the first shifting clutch element and the second shifting clutch element are both in an engaged state, and the engine directly drives the vehicle.
5. The hybrid electric drive of claim 1, wherein: the hybrid electric drive has a first power split mode; and in the first power distribution mode, the first shift clutch element is engaged, the second shift clutch element is disengaged, and the first planetary row and the second planetary row determine a first power distribution ratio.
6. The hybrid electric drive of claim 5, wherein: the hybrid electric drive has a second power split mode; and in the second power distribution mode, the first gear shifting clutch element is disengaged, the second gear shifting clutch element is engaged, and the first planetary row determines a second power distribution ratio.
7. The hybrid electric drive of claim 1, wherein: the hybrid electric drive device has a high-gear mode in which the fourth shift brake element is locked and the drive transmission mechanism realizes a high gear; the hybrid electric drive device has a low gear mode in which the third shift brake element is locked and the drive transmission mechanism realizes a low gear.
8. The hybrid electric drive of claim 1, wherein: and in the running process of the vehicle, the shunting speed change mechanism and the driving speed change mechanism shift gears in a time-sharing manner.
CN201810811430.XA 2018-07-23 2018-07-23 Hybrid electric driving device Active CN108944405B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105656241A (en) * 2016-02-26 2016-06-08 梁贱成 Hybrid electric driving device
CN105667302A (en) * 2016-03-03 2016-06-15 科力远混合动力技术有限公司 Deep hybrid transmission device for front-drive vehicle
JP2016107735A (en) * 2014-12-04 2016-06-20 本田技研工業株式会社 Hybrid vehicle driving device
CN205395751U (en) * 2016-02-29 2016-07-27 北京汽车动力总成有限公司 Hybrid assembly device and car
CN106246822A (en) * 2016-09-22 2016-12-21 中国北方车辆研究所 Wheel motor drive device with planet speed change mechanism
CN206781518U (en) * 2017-04-17 2017-12-22 南京理工大学 A kind of planetary multimodal fusion dynamic coupling device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016107735A (en) * 2014-12-04 2016-06-20 本田技研工業株式会社 Hybrid vehicle driving device
CN105656241A (en) * 2016-02-26 2016-06-08 梁贱成 Hybrid electric driving device
CN205395751U (en) * 2016-02-29 2016-07-27 北京汽车动力总成有限公司 Hybrid assembly device and car
CN105667302A (en) * 2016-03-03 2016-06-15 科力远混合动力技术有限公司 Deep hybrid transmission device for front-drive vehicle
CN106246822A (en) * 2016-09-22 2016-12-21 中国北方车辆研究所 Wheel motor drive device with planet speed change mechanism
CN206781518U (en) * 2017-04-17 2017-12-22 南京理工大学 A kind of planetary multimodal fusion dynamic coupling device

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