CN107117071A - New-energy electric vehicle magnetic-powder-type two speed transmission and its process for gear - Google Patents
New-energy electric vehicle magnetic-powder-type two speed transmission and its process for gear Download PDFInfo
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- CN107117071A CN107117071A CN201710273756.7A CN201710273756A CN107117071A CN 107117071 A CN107117071 A CN 107117071A CN 201710273756 A CN201710273756 A CN 201710273756A CN 107117071 A CN107117071 A CN 107117071A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
- B60L15/2054—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed by controlling transmissions or clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/12—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/48—Drive Train control parameters related to transmissions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a kind of New-energy electric vehicle magnetic-powder-type two speed transmission and its control method, including housing, provided with the first driven gear, magnetic powder cluth, the second driven gear and the magnetic powder brake being sequentially connected in the housing；Planetary gear construction is additionally provided with the housing, the planetary gear construction includes planet carrier, and the planet carrier two ends are connected between two planetary gears or four planetary gears, the planetary gear and are connected with sun gear；Also include gear ring, the gear ring side is engaged with planetary gear, and opposite side is engaged with the second driven gear；The planet carrier is engaged by gear with the first driven gear.Control method of the present invention includes shifting to the shift mode of top gear from bottom gear and shifting to the shift mode of bottom gear from top gear；The work slippage interval of electromagnetic brake and electromagnetic clutch of the present invention is small, with reference to the quick individual features of electromagnetic brake and clutch, and the caloric value of whole speed changer is low, and reliability is high.
Description
Technical field
The present invention relates to New-energy electric vehicle magnetic-powder-type two speed transmission and its process for gear, belong to electric automobile certainly
Move gear technical field.
Background technology
According to the applicant understood, with expanding economy, environmental problem is increasingly serious, and pure electric automobile is due to its zero-emission
Characteristic, has obtained large-scale application in recent years.Electric-machine directly-driven system, which has, to operate steadily, the advantage of power failure-free, still
Electric automobile can not be always worked in high efficient area, especially transported in low rate start and at a high speed using a gear speed ratio, motor
Under capable operating mode.
Then electric automobile starts to use multi-speed transmission so that electric automobile can be operated in high efficient area, with
Exemplified by two speed transmission, traditional speed changer scheme being continued to use existing two speed transmission, the first speed changer scheme is more：Using
The scheme of synchronizer and hydraulic clutch, this speed changer exist shift shock, clutch reliability is relatively low and volume compared with
Big the problem of.Second of speed changer scheme be：Using the scheme of electromagnetic clutch, the problem of existing is as follows：1. clutch exists more
Installed on axial direction, due to the operation principle and end effect of electromagnetic brake, electromagnetic brake is easily for planetary gear
Gear produces influence, service life reduction；2. and axially mounted electromagnetic clutch is arranged on rotatable parts, is unfavorable for dissipating
Heat, often surplus is larger and working environment is severe for electromagnetic clutch, causes the life and reliability of whole speed changer to decline；3. magnetic
Powder clutch belongs to one kind of electromagnetic clutch, and in the scheme of existing use magnetic powder cluth, the heating of magnetic powder cluth
Be mainly derived from clutch is in the slip power produced under slippage operating mode, and the slippage operating mode of magnetic particle coupling is typically lasting
Time is in 1s or so, and the torque output of magnetic powder brake has certain hysteresis quality, the time of torque output step decrease response
Short compared with the time that step rises response, the rotating speed response of traditional engine is slower, the slippage produced by causing in shift process
Power is substantially undertaken by magnetic-powder-type magnetic powder cluth, causes the loss of speed changer larger.
The content of the invention
It is an object of the invention to：In view of the above-mentioned problems of the prior art, proposing that a kind of New-energy electric vehicle is used
The process for gear of magnetic-powder-type two speed transmission, can effectively shorten shift time, reduce the time of slippage operating mode, effective to reduce
The caloric value of magnetic powder cluth and magnetic powder brake, improves the life and reliability of speed changer.
Technical scheme is as follows：
It is provided with what is be sequentially connected in New-energy electric vehicle of the present invention magnetic-powder-type two speed transmission, including housing, the housing
First driven gear, magnetic powder cluth, the second driven gear and magnetic powder brake；Planetary gear knot is additionally provided with the housing
Structure, the planetary gear construction includes planet carrier, and the planet carrier two ends are connected to two planetary gears or four planetary gears,
Sun gear is connected between the planetary gear；Also include gear ring, the gear ring side engages with planetary gear, opposite side and second from
Moving gear is engaged；The planet carrier is engaged by gear with the first driven gear.
Further, the gear ring is double sided gear.
Further, the first driven gear side is connected by bearing with housing is used as support, the first driven gear
Opposite side is connected with magnetic powder cluth.
Further, the second driven gear side is connected with magnetic powder brake, and magnetic powder brake is fixed with housing.
Further, when the magnetic powder brake is in running order：The magnetic powder cluth disconnects, now two grades of changes
Fast device is operated in the working condition of epicyclic train, and fast ratio is：The gear ring number of teeth/（The sun gear number of teeth+1）.
Further, when the magnetic powder cluth works, the magnetic powder brake disconnects, and now two speed transmission is equivalent
For direct drive, speed is than being 1.
The control method of New-energy electric vehicle of the present invention magnetic-powder-type two speed transmission, including it is paramount from bottom gear gearshift
The shift mode of speed gear and the shift mode that bottom gear is shifted to from top gear；
The shift mode of top gear is shifted to from bottom gear：
Step 1: determining whether magnetic-powder-type two shift transmission shifts to top gear performing from bottom gear；
Step 2: obtaining rotating speed of the motor before gearshift by what electric machine controller fed back for Nmlth, magnetic powder brake is disconnected,
Magnetic powder cluth is closed, now the rotating speed of the shift transmission of magnetic-powder-type two link motor port needs to be reduced to Nmlth/ from Nmlth
Low speed notch speed ratio, is turning off magnetic powder brake, while closure magnetic powder cluth, by the mode of operation of motor from moment of torsion control
Molding formula is switched to rotating speed control mode, while the rotating speed of target of motor is set as into the shift transmission of magnetic-powder-type two links motor side
The motor speed that mouth needs after gearshift terminates；
Step 3: being completed in rotational speed regulation and after the completion of magnetic powder brake and magnetic powder cluth torque responsive by the control mould of motor
Formula switches back into torque control model from rotating speed control mode, completes the shift transmission of magnetic-powder-type two changing from bottom gear to top gear
Gear；
The shift mode of bottom gear is shifted to from top gear：
Step 4: determining whether magnetic-powder-type two shift transmission shifts to bottom gear performing from top gear；
Step 5: obtaining rotating speed of the motor before gearshift by what electric machine controller fed back for Nmhtl, magnetic powder brake is disconnected,
Close magnetic powder cluth, now the shift transmission of magnetic-powder-type two link motor port rotating speed need from Nmhtl bring up to Nmhtl ×
Low speed notch speed ratio, is carrying out closure magnetic powder brake, while disconnecting magnetic powder cluth, by the mode of operation of motor from moment of torsion control
Molding formula is switched to rotating speed control mode, while the rotating speed of target of motor is set as into the shift transmission of magnetic-powder-type two links motor side
The motor speed that mouth needs after gearshift terminates；
Step 6: being completed in rotational speed regulation and after the completion of magnetic powder brake and magnetic powder cluth torque responsive by the control mould of motor
Formula switches back into torque control model from rotating speed control mode, completes the shift transmission of magnetic-powder-type two changing from bottom gear to top gear
Gear.
In the step one and step 4, determine whether the shift transmission of magnetic-powder-type two shifts at a high speed in execution from bottom gear
Keep off, determination methods are：Meet two conditions, first condition is to judge whether speed is 30-40km/h, at the same rotating speed whether be
3000-4000r/m；
The gear Rule of judgment of the shift transmission of magnetic-powder-type two, when magnetic powder cluth work, when magnetic powder brake does not work, magnetic-powder-type
Two shift transmissions are in top gear；When magnetic powder cluth does not work, and magnetic powder brake works, the shift transmission of magnetic-powder-type two is in
Top gear；Whether gearshift interval judgement condition, judge speed in gearshift overall speed.
Beneficial effects of the present invention are as follows：
The present invention realizes the speed ratio of two gears using one group of epicyclic gear train, and simple in construction, small volume is lightweight, and redundancy is low, can
It is high by property；The present invention replaces traditional hydraulic clutch using electromagnetic brake with electromagnetic clutch, and small volume is lightweight, and
With reference to pure electric automobile, the excellent specific property of electric machine speed regulation, the work slippage interval of electromagnetic brake and electromagnetic clutch is small, with reference to
The quick individual features of electromagnetic brake and clutch, the caloric value of whole speed changer is low, and reliability is high；The present invention is using driven
Gear realizes the locking of all parts, spatially keeps apart electromagnetic brake with epicyclic train, the electromagnetic system delayed
Dynamic component extends the life-span of epicyclic train, improves reliability for the influence of epicyclic transmission；Magnetic of the present invention
Powder brake is directly connected with housing, is conducive to the radiating of brake, improves the reliability of speed changer.
The present invention is in the gearshift of the shift transmission of magnetic-powder-type two, the change for motor side rotating speed caused by gearshift
Change, become to be adjusted by magnetic powder cluth from the original mode individually adjusted by magnetic powder cluth and magnetic powder brake
While compensated by motor active speed governing, shorten the time in gearshift condition of the shift transmission of magnetic-powder-type two, improve
The ride comfort of gearshift, reduces magnetic powder brake and magnetic powder cluth is operated in the time of slippage operating mode, reduces magnetic powders brake
The power attenuation of device and magnetic powder cluth, reduces the caloric value of magnetic powder brake and magnetic powder cluth, improves magnetic-powder-type two
The reliability of shift transmission.
The present invention benefits from the high frequency sound of motor, can be in magnetic powder cluth under slippage operating mode, motor is adjusted
Speed, motor speed is adjusted the time that slippage operating mode is reduced to rotating speed of target, reduce the caloric value of magnetic powder brake, together in advance
When during electric machine speed regulation can also pass through motor feedback a part slip power, improve efficiency.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the schematic diagram of New-energy electric vehicle magnetic-powder-type two speed transmission of the present invention；
Fig. 2 is that bottom gear of the present invention shifts to top gear control logic schematic diagram；
Fig. 3 is that top gear of the present invention shifts to bottom gear control logic schematic diagram；
Fig. 4 is that bottom gear of the present invention shifts to top gear control timing diagram；
Fig. 5 is that top gear of the present invention shifts to bottom gear control timing diagram；
In figure：1- housings；The driven gears of 2- first；3- magnetic powder cluths；4- planet carriers；5- sun gears；6- gear rings；7- planets
Wheel；8- magnetic powder brakes；The driven gears of 9- second.
Embodiment
Embodiment one
As shown in figure 1, New-energy electric vehicle of the present invention magnetic-powder-type two speed transmission, including housing 1, set in the housing 1
There are the first driven gear 2 being sequentially connected, magnetic powder cluth 3, the second driven gear 9 and magnetic powder brake 8；In the housing 1
Planetary gear construction is additionally provided with, the planetary gear construction includes planet carrier 4, and the two ends of planet carrier 4 are connected with two planets
Sun gear 5 is connected between wheel 7 or four planetary gears 7, the planetary gear 7；Also include gear ring 6, the side of gear ring 6 and planet
Wheel 7 is engaged, and opposite side is engaged with the second driven gear 9；The planet carrier 4 is engaged by gear with the first driven gear 2.
Gear ring 6 of the present invention is double sided gear.The side of first driven gear 2 is connected work by bearing with housing 1
For support, the opposite side of the first driven gear 2 is connected with magnetic powder cluth 3.The side of second driven gear 9 and magnetic powder brake
8 are connected, and magnetic powder brake 8 is fixed with housing 1.When the magnetic powder brake 8 is in running order：The magnetic powder cluth 3
Disconnect, now two speed transmission is operated in the working condition of epicyclic train, fast ratio is：The gear ring number of teeth/（The sun gear number of teeth+1）.
When the magnetic powder cluth 3 works, the magnetic powder brake 8 disconnects, and now two speed transmission is equivalent to direct drive, speed ratio
For 1.
A kind of electric automobile two speed transmission of the present invention is included in housing 1, housing 1 by epicyclic train and lockable mechanism structure
Into wherein gear ring 6 is double sided gear, is connected by driven gear with magnetic powder brake 8, and also there is gear in the outside of planet carrier 4, leads to
Cross the first driven gear 2 with the side of magnetic powder cluth 3 to be connected, the opposite side of magnetic powder cluth 3 passes through driven gear 9 and tooth
Circle 6 is connected.The locking of magnetic powder brake 8, magnetic powder cluth 3 is opened, and the fast ratio of two grades of gearboxes is：6 numbers of teeth of gear ring/sun gear
5 numbers of teeth+1；Magnetic powder brake 8 is opened, the locking of magnetic powder cluth 3, and the speed of two grades of gearboxes is than being 1.Wherein magnetic powder brake 8 is pacified
On case of transmission, be conducive to the radiating of magnetic powder brake 8, the non-close clutch one end of the first driven gear 2 passes through axle
Hold on housing, be used as support.
As shown in Figure 2-5, the control method of New-energy electric vehicle of the present invention magnetic-powder-type two speed transmission, including from low
Speed gear shifts to the shift mode of top gear and the shift mode of bottom gear is shifted to from top gear；In Figure 4 and 5, T1- gearshifts are accurate
Standby time 0.02s；T2- shift processes, slippage operating mode duration 0.3s；T3- is the torsion of magnetic powder brake and magnetic powder cluth
Square response time 0.9s；
The shift mode of top gear is shifted to from bottom gear：During top gear is shifted to from low or first gear, gearshift control is patrolled
Volume as shown in Fig. 2 gearshift control sequential as shown in figure 4,
Step 1: determining whether magnetic-powder-type two shift transmission shifts to top gear performing from bottom gear；
Step 2: obtaining rotating speed of the motor before gearshift by what electric machine controller fed back for Nmlth, magnetic powder brake 8 is disconnected,
Magnetic powder cluth 3 is closed, now the rotating speed of the shift transmission of magnetic-powder-type two link motor port needs to be reduced to Nmlth/ from Nmlth
Low speed notch speed ratio, is turning off magnetic powder brake 8, while closure magnetic powder cluth 3, by the mode of operation of motor from moment of torsion
Control mode switch is to rotating speed control mode, while the rotating speed of target of motor is set as into the shift transmission of magnetic-powder-type two links motor
The motor speed that port needs after gearshift terminates；
Step 3: being completed in rotational speed regulation and after the completion of magnetic powder brake 8 and the torque responsive of magnetic powder cluth 3 by the control of motor
Pattern switches back into torque control model from rotating speed control mode, completes the shift transmission of magnetic-powder-type two changing from bottom gear to top gear
Gear；
The shift mode of bottom gear is shifted to from top gear：During top gear shifts to bottom gear, shift logic figure is such as
Shown in Fig. 3, gearshift control sequential as shown in figure 5,
Step 4: determining whether magnetic-powder-type two shift transmission shifts to bottom gear performing from top gear；
Step 5: obtaining rotating speed of the motor before gearshift by what electric machine controller fed back for Nmhtl, magnetic powder brake 8 is disconnected,
Magnetic powder cluth 3 is closed, now the rotating speed of the shift transmission of magnetic-powder-type two link motor port needs to bring up to Nmhtl from Nmhtl
× low speed notch speed ratio, is carrying out closing magnetic powder brake 8, while disconnecting magnetic powder cluth 3, by the mode of operation of motor from torsion
Square control mode switch is to rotating speed control mode, while the rotating speed of target of motor is set as into the shift transmission of magnetic-powder-type two links electricity
The motor speed that generator terminal mouthful needs after gearshift terminates；
Step 6: being completed in rotational speed regulation and after the completion of magnetic powder brake 8 and the torque responsive of magnetic powder cluth 3 by the control of motor
Pattern switches back into torque control model from rotating speed control mode, completes the shift transmission of magnetic-powder-type two changing from bottom gear to top gear
Gear.
In the step one and step 4, determine whether the shift transmission of magnetic-powder-type two shifts at a high speed in execution from bottom gear
Keep off, determination methods are：Meet two conditions, first condition is to judge whether speed is 30-40km/h, at the same rotating speed whether be
3000-4000r/m；
Current range state is judged by the working condition of magnetic powder brake and magnetic powder cluth, when magnetic powder cluth work
Make, when magnetic powder brake does not work, the shift transmission of magnetic-powder-type two is in top gear；When magnetic powder cluth does not work, magnetic powders brake
When device works, the shift transmission of magnetic-powder-type two is in low or first gear；
The gear Rule of judgment of the shift transmission of magnetic-powder-type two, when magnetic powder cluth work, when magnetic powder brake does not work, magnetic-powder-type
Two shift transmissions are in top gear；When magnetic powder cluth does not work, and magnetic powder brake works, the shift transmission of magnetic-powder-type two is in
Top gear；Whether gearshift interval judgement condition, judge speed in gearshift overall speed.
The present invention realizes the speed ratio of two gears using one group of epicyclic gear train, and simple in construction, small volume is lightweight, redundancy
Low, reliability is high；The present invention replaces traditional hydraulic clutch, small volume, weight using electromagnetic brake with electromagnetic clutch
Gently, and pure electric automobile is combined, the excellent specific property of electric machine speed regulation, the work slippage of electromagnetic brake and electromagnetic clutch is interval
Small, with reference to the quick individual features of electromagnetic brake and clutch, the caloric value of whole speed changer is low, and reliability is high；The present invention
The locking of all parts is realized using driven gear, spatially keeps apart electromagnetic brake with epicyclic train, is delayed
Electromagnetic braking part for the influence of epicyclic transmission, extend the life-span of epicyclic train, improve reliability；
Magnetic powder brake of the present invention is directly connected with housing, is conducive to the radiating of brake, improves the reliability of speed changer.
The present invention is in the gearshift of the shift transmission of magnetic-powder-type two, the change for motor side rotating speed caused by gearshift
Change, become to be adjusted by magnetic powder cluth from the original mode individually adjusted by magnetic powder cluth and magnetic powder brake
While compensated by motor active speed governing, shorten the time in gearshift condition of the shift transmission of magnetic-powder-type two, improve
The ride comfort of gearshift, reduces magnetic powder brake and magnetic powder cluth is operated in the time of slippage operating mode, reduces magnetic powders brake
The power attenuation of device and magnetic powder cluth, reduces the caloric value of magnetic powder brake and magnetic powder cluth, improves magnetic-powder-type two
The reliability of shift transmission.
The present invention benefits from the high frequency sound of motor, can be in magnetic powder cluth under slippage operating mode, motor is adjusted
Speed, motor speed is adjusted the time that slippage operating mode is reduced to rotating speed of target, reduce the caloric value of magnetic powder brake, together in advance
When during electric machine speed regulation can also pass through motor feedback a part slip power, improve efficiency.
Embodiment two
Embodiment one is only that, individually for the gearshift between two gears, the present embodiment is directed to multiple gears, and gear is n, and n is more than
Situation equal to 3.
It is specific to change to top gear from bottom gear and change to bottom gear still using the side as embodiment from top gear
Method.
The shift mode of top gear is shifted to from bottom gear：During top gear is shifted to from low or first gear, gearshift control
Logic processed as shown in Fig. 2 gearshift control sequential as shown in figure 4,
Step 1: determining whether magnetic-powder-type two shift transmission shifts to top gear performing from bottom gear；
Step 2: obtaining rotating speed of the motor before gearshift by what electric machine controller fed back for Nmlth, magnetic powder brake 8 is disconnected,
Magnetic powder cluth 3 is closed, now the rotating speed of the shift transmission of magnetic-powder-type two link motor port needs to be reduced to Nmlth/ from Nmlth
Low speed notch speed ratio, is turning off magnetic powder brake 8, while closure magnetic powder cluth 3, by the mode of operation of motor from moment of torsion
Control mode switch is to rotating speed control mode, while the rotating speed of target of motor is set as into the shift transmission of magnetic-powder-type two links motor
The motor speed that port needs after gearshift terminates；
Step 3: being completed in rotational speed regulation and after the completion of magnetic powder brake 8 and the torque responsive of magnetic powder cluth 3 by the control of motor
Pattern switches back into torque control model from rotating speed control mode, completes the shift transmission of magnetic-powder-type two changing from bottom gear to top gear
Gear；
The shift mode of bottom gear is shifted to from top gear：During top gear shifts to bottom gear, shift logic figure is such as
Shown in Fig. 3, gearshift control sequential as shown in figure 5,
Step 4: determining whether magnetic-powder-type two shift transmission shifts to bottom gear performing from top gear；
Step 5: obtaining rotating speed of the motor before gearshift by what electric machine controller fed back for Nmhtl, magnetic powder brake 8 is disconnected,
Magnetic powder cluth 3 is closed, now the rotating speed of the shift transmission of magnetic-powder-type two link motor port needs to bring up to Nmhtl from Nmhtl
× low speed notch speed ratio, is carrying out closing magnetic powder brake 8, while disconnecting magnetic powder cluth 3, by the mode of operation of motor from torsion
Square control mode switch is to rotating speed control mode, while the rotating speed of target of motor is set as into the shift transmission of magnetic-powder-type two links electricity
The motor speed that generator terminal mouthful needs after gearshift terminates；
Step 6: being completed in rotational speed regulation and after the completion of magnetic powder brake 8 and the torque responsive of magnetic powder cluth 3 by the control of motor
Pattern switches back into torque control model from rotating speed control mode, completes the shift transmission of magnetic-powder-type two changing from bottom gear to top gear
Gear.
In addition to the implementation, the present invention can also have other embodiment.All use equivalent substitution or equivalent transformation shape
Into technical scheme, all fall within the protection domain of application claims.
Claims (8)
1. New-energy electric vehicle magnetic-powder-type two speed transmission, including housing（1）, it is characterised in that：The housing（1）Inside set
There is the first driven gear being sequentially connected（2）, magnetic powder cluth（3）, the second driven gear（9）And magnetic powder brake（8）；It is described
Housing（1）Planetary gear construction is inside additionally provided with, the planetary gear construction includes planet carrier（4）, the planet carrier（4）Two ends point
Two planetary gears are not connected with（7）Or four planetary gears（7）, the planetary gear（7）Between be connected with sun gear（5）；Also include
Gear ring（6）, the gear ring（6）Side and planetary gear（7）Engagement, opposite side and the second driven gear（9）Engagement；The planet carrier
（4）Pass through gear and the first driven gear（2）Engagement.
2. New-energy electric vehicle according to claim 1 magnetic-powder-type two speed transmission, it is characterised in that：The gear ring
（6）For double sided gear.
3. New-energy electric vehicle according to claim 1 magnetic-powder-type two speed transmission, it is characterised in that：Described first
Driven gear（2）Side passes through bearing and housing（1）Connection is used as support, the first driven gear（2）Opposite side with it is magnetic powder clutched
Device（3）Connection.
4. New-energy electric vehicle according to claim 1 magnetic-powder-type two speed transmission, it is characterised in that：Described second
Driven gear（9）Side and magnetic powder brake（8）It is connected, magnetic powder brake（8）With housing（1）It is fixed.
5. New-energy electric vehicle according to claim 1 magnetic-powder-type two speed transmission, it is characterised in that：When the magnetic
Powder brake（8）When in running order：The magnetic powder cluth（3）Disconnect, now two speed transmission is operated in planetary gear
The working condition of system, fast ratio is：The gear ring number of teeth/（The sun gear number of teeth+1）.
6. New-energy electric vehicle according to claim 1 magnetic-powder-type two speed transmission, it is characterised in that：When the magnetic
Powder clutch（3）During work, the magnetic powder brake（8）Disconnect, now two speed transmission is equivalent to direct drive, and speed is than being 1.
7. the New-energy electric vehicle control method of magnetic-powder-type two speed transmission, it is characterised in that：Including being shifted gears from bottom gear
The shift mode of bottom gear is shifted to the shift mode of top gear and from top gear；
The shift mode of top gear is shifted to from bottom gear：
Step 1: determining whether magnetic-powder-type two shift transmission shifts to top gear performing from bottom gear；
Step 2: obtaining rotating speed of the motor before gearshift by what electric machine controller fed back for Nmlth, magnetic powder brake is disconnected
（8）, close magnetic powder cluth（3）, now the shift transmission of magnetic-powder-type two link the rotating speed of motor port and need to be reduced to from Nmlth
Nmlth/ low speed notch speed ratio, is turning off magnetic powder brake（8）, close magnetic powder cluth（3）While, by the work of motor
Pattern is switched to rotating speed control mode from torque control mode, while the rotating speed of target of motor is set as into magnetic-powder-type two keeps off speed change
Device links the motor speed that motor port needs after gearshift terminates；
Step 3: being completed and magnetic powder brake in rotational speed regulation（8）And magnetic powder cluth（3）By motor after the completion of torque responsive
Control model switches back into torque control model from rotating speed control mode, completes the shift transmission of magnetic-powder-type two from bottom gear to top gear
Gearshift；
The shift mode of bottom gear is shifted to from top gear：
Step 4: determining whether magnetic-powder-type two shift transmission shifts to bottom gear performing from top gear；
Step 5: obtaining rotating speed of the motor before gearshift by what electric machine controller fed back for Nmhtl, magnetic powder brake is disconnected
（8）, close magnetic powder cluth（3）, now the shift transmission of magnetic-powder-type two link the rotating speed of motor port and need to bring up to from Nmhtl
Nmhtl × low speed notch speed ratio, is carrying out closure magnetic powder brake（8）, disconnect magnetic powder cluth（3）While, by the work of motor
Operation mode is switched to rotating speed control mode from torque control mode, while the rotating speed of target of motor is set as into magnetic-powder-type two keeps off change
Fast device links the motor speed that motor port needs after gearshift terminates；
Step 6: being completed and magnetic powder brake in rotational speed regulation（8）And magnetic powder cluth（3）By motor after the completion of torque responsive
Control model switches back into torque control model from rotating speed control mode, completes the shift transmission of magnetic-powder-type two from bottom gear to top gear
Gearshift.
8. the New-energy electric vehicle according to claim 7 control method of magnetic-powder-type two speed transmission, its feature exists
In：In the step one and step 4, determine whether the shift transmission of magnetic-powder-type two from bottom gear shifts to top gear performing, institute
The gear Rule of judgment of the shift transmission of magnetic-powder-type two is stated, when magnetic powder cluth work, when magnetic powder brake does not work, magnetic-powder-type two
Shift transmission is in top gear；When magnetic powder cluth does not work, and magnetic powder brake works, the shift transmission of magnetic-powder-type two is in height
Fast shelves；Whether gearshift interval judgement condition, judge speed in gearshift overall speed.
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| CN201710273756.7A CN107117071B (en) | 2017-04-25 | 2017-04-25 | New-energy electric vehicle magnetic-powder-type two speed transmission and its process for gear |
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| CN107143645A (en) * | 2017-04-25 | 2017-09-08 | 南京汽车集团有限公司 | A kind of shift transmission of electric automobile two |
| CN111786509A (en) * | 2020-07-24 | 2020-10-16 | 合肥工业大学 | Integrated motor clutch coupling actuator |
| CN111828568A (en) * | 2019-04-17 | 2020-10-27 | 长城汽车股份有限公司 | Gear shifting device and vehicle |
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|---|---|
| CN107117071B (en) | 2019-11-19 |
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