CN111284481A - Hybrid power driving system with bidirectional power interruption mechanism - Google Patents
Hybrid power driving system with bidirectional power interruption mechanism Download PDFInfo
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- CN111284481A CN111284481A CN202010244690.0A CN202010244690A CN111284481A CN 111284481 A CN111284481 A CN 111284481A CN 202010244690 A CN202010244690 A CN 202010244690A CN 111284481 A CN111284481 A CN 111284481A
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- power
- differential
- driving motor
- gear
- disconnecting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/20—Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a hybrid power driving system with a bidirectional power interruption mechanism, which comprises an engine, a transmission and a driving motor, wherein a power output gear of the transmission is connected with a differential mechanism, and the other end of the differential mechanism is connected with the driving motor; a first power disconnecting and combining structure is arranged between the power output gear and the differential mechanism, and a second power disconnecting and combining structure is arranged between the driving motor and the differential mechanism; this hybrid power drive system moves through set up on the power transmission route of engine first power disconnection and combination structure set up on driving motor's the power transmission route of second power disconnection and combination structure forms two-way power breakable structure, reduces gear idle running, can improve driving motor transmission efficiency to can also reduce the risk that derailleur and motor idle running produced the NVH problem, improve user's travelling comfort and reduce driving motor cost.
Description
Technical Field
The invention relates to the technical field of hybrid vehicle driving, in particular to a hybrid power driving system with a bidirectional power interruption mechanism.
Background
The basic structure of the hybrid automatic transmission on the market at present is only to arrange a clutch at the input end of an engine to interrupt the power input of the engine so as to realize pure electric driving. When a user runs purely electrically, the clutch disconnects the transmission from the engine, the driving motor is connected with the speed change mechanism, and the power of the driving motor is transmitted to the wheels through the output shaft, so that the vehicle runs purely electrically.
However, in the structure of the transmission, when the pure electric vehicle runs, the driving motor needs to additionally drive the gear of the power transmission path of the engine to idle, so that additional power loss of the motor is caused. Meanwhile, gear noise may increase due to gear idling of the engine power transmission path. The motor that these existing structure caused is low in transmission efficiency, and whole car energy consumption is high, and is not inconsistent with the theory that reduces transmission loss, reduces whole car energy consumption, and simultaneously, the additional NVH problem that produces can reduce user's travelling comfort.
Disclosure of Invention
The invention aims to provide a hybrid power driving system with a bidirectional power interruption mechanism, aiming at the problem of NVH (noise, vibration and harshness) generated by idle running of a gearbox and a driving motor in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
a hybrid power driving system with a bidirectional power interruption mechanism comprises an engine, a transmission and a driving motor, wherein a power output gear of the transmission is connected with a differential, and the other end of the differential is connected with the driving motor; a first power disconnecting and combining structure is arranged between the power output gear and the differential, and a second power disconnecting and combining structure is arranged between the driving motor and the differential.
The hybrid power driving system forms a bidirectional power disconnectable structure by arranging the first power disconnecting and combining structure on the power transmission path of the engine and arranging the second power disconnecting and combining structure on the power transmission path of the driving motor, is respectively connected with the differential, can independently and respectively control the input and the disconnection of the engine and the driving motor, optimizes the power input structure, and respectively protects the driving motor, the engine and the transmission in pure fuel and pure electric states; can improve driving motor transmission efficiency to can also reduce derailleur and motor idle running and produce the risk of NVH problem, improve user's travelling comfort and reduce driving motor cost.
By adding the bidirectional disconnectable mechanism, when the pure electric vehicle runs, the power of the driving motor can completely and directly drive the wheels, so that the transmission efficiency of the driving motor is improved, the energy consumption of the whole vehicle is reduced, meanwhile, the power transmission path of the engine is completely disconnected, and the phenomenon that the driving motor drives part of gears on the power transmission path of the engine to idle is avoided; when pure fuel high speed traveles, driving motor's rotational speed and the decoupling zero of the speed of a motor vehicle, driving motor performance requirement itself reduces to reduce driving motor cost can thoroughly break off driving motor's power transmission route simultaneously, reduces the meshing gear and avoids driving motor idles at a high speed, reduces the NVH problem, reduces gear wheel noise, promotes user's travelling comfort.
The first power disconnecting and combining structure and the second power disconnecting and combining structure are respectively and independently connected with the differential mechanism, so that the arrangement of connecting parts can be reduced, the power transmission of an engine and a driving motor can be output to wheels, and the differential mechanism is structurally and symmetrically arranged, so that the excessive burden of the differential mechanism cannot be increased, and the normal operation of an internal gear structure of the differential mechanism is not influenced.
Furthermore, the differential mechanism is provided with a differential mechanism shell and an internal differential planetary gear which are connected with each other, and a first differential mechanism gear ring and a second differential mechanism gear ring are respectively connected to two sides of the differential mechanism shell; one end of the first differential gear ring is connected with the power output gear, and the other end of the first differential gear ring is connected with the driving end of the first power disconnecting and combining structure; one end of the second differential gear ring is connected to a motor reduction gear of the driving motor, and the other end of the second differential gear ring is connected with a driving end of the second power disconnecting and combining structure; the output end of the differential planetary gear is connected to a wheel shaft.
Further, a driven end of the first power disconnection and connection structure is rigidly connected to the differential case on the side of the first differential ring gear; the driven end of the second power disconnection and engagement structure is rigidly connected to the differential case on the side of the second differential ring gear.
The first differential gear ring and the second differential gear ring play roles in connection and fixation, on one hand, the first differential gear ring and the second differential gear ring are fixed and connected with the differential shell together to form a power disconnecting and combining structure, and on the other hand, the first differential gear ring and the second differential gear ring are respectively meshed with the power output gear and the motor reduction gear to transmit power; the first and second differential ring gears are identical or similar in structure and are disposed on the differential in a symmetrical fashion.
Further, the first power disconnecting and connecting structure is a synchronizer structure or a clutch structure, and can also be other actuating mechanisms with similar interrupting and connecting functions, so that the first power disconnecting and connecting structure and the gear structure on the differential are disconnected or connected independently.
Further, the second power disconnecting and connecting structure may also be a synchronizer structure or a clutch structure, or may also be other actuators with similar interrupting and connecting functions, so as to independently realize the disconnection or connection of the second power disconnecting and connecting structure and the gear structure on the differential.
Further, the hybrid drive system includes a hybrid mode in which the first and second power disconnection and engagement structures are both engaged; the power transmission path of the engine sequentially passes through the power output gear, the first power disconnecting and combining structure and the differential mechanism and then reaches wheels; meanwhile, the power transmission of the driving motor sequentially passes through the second power disconnecting and combining structure and the differential mechanism and then reaches the wheels.
Further, the hybrid power drive system comprises an electric power mode, in the electric power mode, the engine stops working, the first power disconnecting and connecting structure is in a disconnecting state, and power of the drive motor is transmitted to the differential mechanism through the second power disconnecting and connecting structure in a connecting state and then reaches the wheels.
Further, the hybrid drive system includes a fuel only mode in which the drive motor stops operating, the second power disconnecting and coupling structure is in a disconnected state, and the power of the engine is transmitted to the differential through the coupled first power disconnecting and coupling structure to the wheels.
Compared with the prior art, the invention has the beneficial effects that: 1. the hybrid power driving system can independently and respectively control the input and the disconnection of the engine and the driving motor by a bidirectional power disconnectable structure, optimizes the power input structure, and respectively protects the driving motor, the engine and the transmission in pure fuel oil and pure electric states; the transmission efficiency of the driving motor can be improved, the risk of NVH (noise, vibration and harshness) caused by idling of a transmission and the motor can be reduced, the comfort of a user is improved, and the cost of the driving motor is reduced; 2. when the pure electric vehicle runs, the power of the driving motor can completely and directly drive the wheels, so that the transmission efficiency of the driving motor is improved, the energy consumption of the whole vehicle is reduced, meanwhile, the power transmission path of the engine is completely disconnected, and the phenomenon that the driving motor drives part of gears on the power transmission path of the engine to idle is avoided; 3. when pure fuel high speed traveles, driving motor's rotational speed and the decoupling zero of the speed of a motor vehicle, driving motor performance requirement itself reduces to reduce driving motor cost can thoroughly break off driving motor's power transmission route simultaneously, reduces the meshing gear and avoids driving motor idles at a high speed, reduces the NVH problem, reduces gear wheel noise, promotes user's travelling comfort.
Drawings
FIG. 1 is a schematic layout of a hybrid drive system having a bi-directional power interrupt mechanism in accordance with the present invention;
in the figure: 1. an engine; 2. a transmission (gearbox); 3. a power output gear; 4. a drive motor; 5. a differential housing; 6. a differential planetary gear; 7. a first differential ring gear; 8. a first power disconnect and connect structure; 9. a second differential ring gear; 10. a second power disconnect and join structure; 11. a motor reduction gear; 12. and (7) wheels.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The first embodiment is as follows:
as shown in fig. 1, a hybrid power drive system with a bidirectional power interruption mechanism comprises an engine 1, a transmission 2 and a drive motor 4, wherein the engine 1 is connected with the transmission 2, and is connected with a differential through a power output gear 3 connected with the transmission 2, and the other end of the differential is connected with the drive motor 4; a first power disconnecting and connecting structure 8 is arranged between the power output gear 3 and the differential mechanism, and a second power disconnecting and connecting structure 10 is arranged between the driving motor 4 and the differential mechanism.
The hybrid power driving system forms a bidirectional power disconnectable structure by arranging the first power disconnecting and combining structure 8 on the power transmission path of the engine 1 and arranging the second power disconnecting and combining structure 10 on the power transmission path of the driving motor 4, is respectively connected with the differential, can independently and respectively control the power input and disconnection of the engine 1 and the driving motor 4, optimizes the power output structure, and respectively protects the driving motor 4, the engine 1 and the transmission 2 in pure fuel oil and pure electric states; can improve driving motor 4 transmission efficiency to can also reduce derailleur 2 and driving motor 4 idle running and produce the risk of NVH problem, improve user's travelling comfort and reduce driving motor cost.
By adding the bidirectional disconnectable mechanism, when the pure electric vehicle runs, the power of the driving motor 4 can completely and directly drive the wheels, so that the transmission efficiency of the driving motor 4 is improved, the energy consumption of the whole vehicle is reduced, meanwhile, the power transmission path of the engine 1 is completely disconnected, and the phenomenon that the driving motor 4 drives part of gears on the power transmission path of the engine 1 to idle is avoided; when pure fuel high speed traveles, driving motor 4's rotational speed and the decoupling zero of the speed of a motor vehicle, driving motor 4 performance requirement itself reduces, thereby can reduce driving motor 4's cost (current driving motor because can not with the decoupling zero of the speed of a motor vehicle, need higher preparation technology, cause the cost of manufacture to improve), can thoroughly break off driving motor 4's power transmission route simultaneously, reduce the meshing gear and avoid driving motor 4 idles at a high speed, reduces the NVH problem, reduces gear wheel noise, promotes user's travelling comfort.
The first power disconnecting and combining structure 8 and the second power disconnecting and combining structure 10 are respectively and independently connected with the differential mechanism, so that the arrangement of connecting parts can be reduced, the power transmission of the engine 1 and the driving motor 4 can be output to wheels, and the structures are symmetrically arranged, so that the excessive burden of the differential mechanism cannot be increased, and the normal operation of an internal gear structure of the differential mechanism cannot be influenced.
Further, the differential is provided with a differential shell 5 and an internal differential planetary gear 6 which are connected with each other, and a first differential gear ring 7 and a second differential gear ring 9 are respectively connected with two sides of the differential shell 5; one end of the first differential gear ring 7 is in meshed connection with the power output gear 3, and the other end of the first differential gear ring is in meshed connection with the driving end of the first power disconnecting and combining structure 8; one end of the second differential gear ring 9 is in meshed connection with a motor reduction gear 11 of the driving motor 4, and the other end of the second differential gear ring is in meshed connection with a driving end of the second power disconnecting and combining structure 10; the output of the differential planetary gear 6 is connected to the wheel axle.
Further, the driven end of the first power disconnection and connection structure 8 is rigidly connected to the differential case 5 on the side of the first differential ring gear 7; the driven end of the second power disconnection and coupling arrangement 10 is rigidly connected to the differential housing 5 on the side of the second differential ring gear 9.
The first differential gear ring 7 and the second differential gear ring 9 play roles of connection and fixation, on one hand, the first differential gear ring and the second differential gear ring are fixed and connected with the two power disconnecting and connecting structures together with the differential case 5, and on the other hand, the first differential gear ring and the second differential gear ring are respectively meshed with the power output gear 3 and the motor reduction gear 11 to transmit power; the first and second differential ring gears 7, 9 are identical or similar in construction and are arranged in a symmetrical manner on the differential.
Further, the first power disconnecting and coupling structure 8 is a synchronizer structure, and may also be other mechanisms with similar interrupting and connecting functions, so as to independently realize the disconnection or the coupling of the first power disconnecting and coupling structure 8 and the gear structure on the differential.
Further, the second power disconnecting and connecting structure 10 is also a synchronizer structure, and may also be other mechanisms with similar interrupting and connecting functions, so as to independently realize the disconnection or connection of the second power disconnecting and connecting structure 10 and the gear structure on the differential.
That is to say that the first power disconnecting and coupling structure 8 (e.g. a synchronizer structure) enables the first differential ring gear 7 to be disconnected from or intermeshed with a gear transmission structure (e.g. a differential planetary gear) inside the differential, to the effect of disconnection or connection; similarly, the second power disconnecting and connecting structure 10 can also enable the first differential gear ring 7 and a gear transmission structure inside the differential (to be disconnected from engagement or mutually engaged to achieve the effect of interruption or connection, so as to realize three different engaging and disconnecting structures of hybrid driving, pure fuel driving and pure electric driving.
Example two:
this embodiment provides the hybrid mode of the hybrid drive system with the bidirectional power interrupting mechanism described in the first embodiment.
In the hybrid mode, both the first power disconnecting and coupling structure 8 and the second power disconnecting and coupling structure 10 are in a coupled state; the power transmission path of the engine 1 passes through the transmission 2, the power output gear 3, the first power disconnecting and connecting structure 8 and the differential in sequence and then reaches the wheels 12; meanwhile, the power transmission of the driving motor 4 sequentially passes through the motor reduction gear 11, the second power disconnecting and connecting structure 10 and the differential mechanism and then reaches the wheels 12.
The power of the engine 1 and the power of the drive motor 4 at this time are transmitted together and act on the wheels 12, so that hybrid running of the vehicle can be achieved, and the vehicle can be powered and fuel-efficient.
Example three:
the present embodiment provides the electric-only mode of the hybrid drive system with the bidirectional power interrupting mechanism described in the first embodiment.
In the pure electric mode, the engine 1 stops working, the first power disconnecting and connecting structure 8 is in a disconnecting state, and the power of the driving motor 4 is transmitted to the differential mechanism through the second power disconnecting and connecting structure 10 in a connecting state and then reaches wheels, so that pure electric running of the vehicle is realized.
At this time, the power of the engine is interrupted in two directions, even if the driving motor 4 still runs, internal gears such as the engine 1, the transmission 2 and the power output gear 3 can be idle without being driven, and the noise caused by idle running of a large gear is obviously reduced; the output power of the driving motor 4 is basically transmitted to the wheels 12, so that the power loss is reduced, and the efficiency of the driving motor 4 is improved.
Example four:
the present embodiment provides a fuel only mode of the hybrid drive system with the two-way power interrupt mechanism described in the first embodiment.
In the pure fuel mode, the driving motor 4 stops working, the second power disconnecting and connecting structure 10 is in a disconnected state, and the power of the engine 1 is transmitted to the differential mechanism through the combined first power disconnecting and connecting structure 8 and then reaches the wheels 12, so that the pure fuel running of the vehicle is realized.
At this moment, the power of the driving motor 4 is subjected to bidirectional power interruption, the rotating speed of the driving motor 4 is decoupled with the vehicle speed, even if the engine 1 works normally, the motor reduction gear 11 and the driving motor 4 cannot be driven to idle, the NVH problem can be obviously reduced, and the user comfort is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A hybrid power driving system with a bidirectional power interruption mechanism comprises an engine, a transmission and a driving motor, and is characterized in that a power output gear of the transmission is connected with a differential, and the other end of the differential is connected with the driving motor; a first power disconnecting and combining structure is arranged between the power output gear and the differential, and a second power disconnecting and combining structure is arranged between the driving motor and the differential.
2. A hybrid drive system with a two-way power interrupt mechanism as recited in claim 1, wherein the differential has an interconnected differential housing and internal differential planet gears, a first differential ring gear and a second differential ring gear being connected to either side of the differential housing; one end of the first differential gear ring is connected with the power output gear, and the other end of the first differential gear ring is connected with the driving end of the first power disconnecting and combining structure; one end of the second differential gear ring is connected to a motor reduction gear of the driving motor, and the other end of the second differential gear ring is connected with a driving end of the second power disconnecting and combining structure; the output end of the differential planetary gear is connected to a wheel shaft.
3. A hybrid drive system with a two-way power interrupt mechanism as recited in claim 2, wherein the driven end of the first power disconnection and coupling arrangement is rigidly connected to the differential housing on the side of the first differential ring gear; the driven end of the second power disconnection and engagement structure is rigidly connected to the differential case on the side of the second differential ring gear.
4. A hybrid drive system with a two-way power interrupt mechanism as recited in claim 1, wherein the first power disconnection and engagement structure is a synchronizer structure or a clutch structure.
5. A hybrid drive system with a two-way power interrupt mechanism as recited in claim 1, wherein the secondary power disconnect and engage structure is also a synchronizer structure or a clutch structure.
6. A hybrid drive system with a bi-directional power interrupt mechanism as set forth in claim 1 including a hybrid mode in which said first and second power disconnect and engage structures are both engaged; the power transmission path of the engine sequentially passes through the power output gear, the first power disconnecting and combining structure and the differential mechanism and then reaches wheels; meanwhile, the power transmission of the driving motor sequentially passes through the second power disconnecting and combining structure and the differential mechanism and then reaches the wheels.
7. A hybrid drive system with a bi-directional power interrupt mechanism as recited in claim 1, including an electric-only mode in which the engine is off, the first power disconnect and engage structure is in a disconnected state, and power from the drive motor is transferred through the second power disconnect and engage structure in an engaged state to the differential to the wheels.
8. A hybrid drive system with a bi-directional power interrupt mechanism as recited in claim 1, wherein said hybrid drive system includes a fuel only mode in which said drive motor is deactivated, said secondary power disconnect and connect structure is in a disconnected state, and power from said engine is transferred through said first power disconnect and connect structure, which is connected, to said differential to the wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010244690.0A CN111284481A (en) | 2020-03-31 | 2020-03-31 | Hybrid power driving system with bidirectional power interruption mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010244690.0A CN111284481A (en) | 2020-03-31 | 2020-03-31 | Hybrid power driving system with bidirectional power interruption mechanism |
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| Publication Number | Publication Date |
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| CN111284481A true CN111284481A (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010244690.0A Withdrawn CN111284481A (en) | 2020-03-31 | 2020-03-31 | Hybrid power driving system with bidirectional power interruption mechanism |
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| CN (1) | CN111284481A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011088907A1 (en) * | 2011-12-16 | 2013-06-20 | Schaeffler Technologies AG & Co. KG | Hybrid drive unit for vehicle, has drivable shaft that is driven by electrically operable power path, and electrically and combustion motor operable power path through intermediate clutch |
| CN103189626A (en) * | 2010-11-02 | 2013-07-03 | 本田技研工业株式会社 | Drive system |
| CN205059227U (en) * | 2015-10-27 | 2016-03-02 | 上海中科深江电动车辆有限公司 | Motor is indulged and is put formula hybrid power system |
| JP2016055653A (en) * | 2013-01-30 | 2016-04-21 | 日産自動車株式会社 | Driving apparatus for hybrid vehicle |
| DE102017128825A1 (en) * | 2017-12-05 | 2018-01-25 | FEV Europe GmbH | Dual-clutch transmission for a hybrid powertrain and hybrid vehicle |
-
2020
- 2020-03-31 CN CN202010244690.0A patent/CN111284481A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103189626A (en) * | 2010-11-02 | 2013-07-03 | 本田技研工业株式会社 | Drive system |
| DE102011088907A1 (en) * | 2011-12-16 | 2013-06-20 | Schaeffler Technologies AG & Co. KG | Hybrid drive unit for vehicle, has drivable shaft that is driven by electrically operable power path, and electrically and combustion motor operable power path through intermediate clutch |
| JP2016055653A (en) * | 2013-01-30 | 2016-04-21 | 日産自動車株式会社 | Driving apparatus for hybrid vehicle |
| CN205059227U (en) * | 2015-10-27 | 2016-03-02 | 上海中科深江电动车辆有限公司 | Motor is indulged and is put formula hybrid power system |
| DE102017128825A1 (en) * | 2017-12-05 | 2018-01-25 | FEV Europe GmbH | Dual-clutch transmission for a hybrid powertrain and hybrid vehicle |
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Application publication date: 20200616 |
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