CN108980337A - Two-speed automatic transmission and its control method - Google Patents
Two-speed automatic transmission and its control method Download PDFInfo
- Publication number
- CN108980337A CN108980337A CN201810752291.8A CN201810752291A CN108980337A CN 108980337 A CN108980337 A CN 108980337A CN 201810752291 A CN201810752291 A CN 201810752291A CN 108980337 A CN108980337 A CN 108980337A
- Authority
- CN
- China
- Prior art keywords
- gear
- synchronizer
- speed
- power reception
- engagement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/12—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with means for synchronisation not incorporated in the clutches
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/38—Inputs being a function of speed of gearing elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/46—Inputs being a function of speed dependent on a comparison between speeds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses a kind of two-speed automatic transmissions of single clutch, it can be used for electric car, it includes power reception portion, power output portion and speed ratio converter section, speed ratio converter section includes unilateral bearing and second gear clutch, and under unilateral bearing engagement state, rotary driving force passes to power output portion with the first rotating ratio, at this time, if the revolving speed in power reception portion reaches at or above the first shift rate, second gear clutch engagement, unilateral bearing disengages automatically；Under second gear clutched state, rotary driving force passes to power output portion with the second rotating ratio, at this point, if second gear throw-out-of clutch, unilateral bearing engages automatically when the revolving speed in power reception portion reaches or shift gears less than second rate.The present invention, which only controls a clutch, can be realized two gears, and does not need oil pump when one keeps off and reverses gear and support, reduces pump oil loss, improves course continuation mileage.
Description
Technical field
The present invention relates to the automatic transmission of automobile and the control methods of automatic transmission.Fluid drive of the invention
Device belongs to the automatic transmission of single clutch, is mainly used in electric car.
Background technique
Currently, pure electric automobile mainly selects to carry single gear retarder, although simple, the small in size, quality with structure
The advantages that light and at low cost, but there is also following disadvantages.First, it is higher to driving motor performance requirement.Due to driving motor
Generally high-speed motor then requires for the contradiction between climbing, accelerating ability demand and the max. speed in balancing when low speed
Driving motor possesses higher driving torque, thus then increases the volume and cost of driving motor；Second, electricity under Part load
The efficiency of machine working region is lower.Under the premise of meeting dynamic property demand, single transmission ratio is difficult to ensure motor long-term work
In high efficiency region, especially under highest, minimum speed and low load condition, driving motor efficiency can be greatly reduced, seriously
Vehicle-mounted electric energy is wasted to reduce course continuation mileage.Therefore, the power of pure electric automobile can be promoted by increasing gear number
Property and economy, reduce to the performance requirement of driving motor and increase course continuation mileage.
There are mainly two types of forms for the pure electric automobile two-speed automatic transmission of mainstream at present, the first is the two of AMT form
Speed automatic transmission, the two-speed automatic transmission of this form have many advantages, such as it is at low cost, high-efficient, do not need hydraulic oil pump,
But exist shift there are power interruption, smooth gear shifting it is bad, to the high fatal defects of motor requirement, therefore can not be in pure electric vehicle
It is promoted the use of on passenger car.It is for second the two-speed automatic transmission of DCT or AT form, the two-speed automatic transmission tool of this form
Have the advantages that shift gears power failure-free, smooth gear shifting is good, matched with motor simply, durability it is good.But the disadvantage is that need according to
Powerful electronic oil pump, electronic oil pump longevity of service power consumption is big, reduces the course continuation mileage of pure electric automobile.
Summary of the invention
(1) technical problems to be solved
The present invention is intended to provide a kind of single clutch two-speed automatic transmission for electric car, is slowed down with solving single gear
The problem of device dynamic property and economy cannot be taken into account.
(2) technical solution
In order to solve the above technical problems, the present invention mainly proposes a kind of two-speed automatic transmission comprising power reception portion,
Power output portion and speed ratio converter section, power reception portion are used to receive rotary driving force from outside, and speed ratio converter section is used for institute
It states rotary driving force and power output portion is passed to the first rotating ratio or the second rotating ratio, power output portion is for converting speed ratio
The rotary driving force of portion's transmitting is exported to the wheel shaft of automobile, and the speed ratio converter section includes the one-way shaft for being coupled to power reception portion
Hold with second gear clutch, also, under unilateral bearing engagement state, the rotary driving force passes to power with the first rotating ratio
Output section, at this point, if second gear clutch engages, one-way shaft when the revolving speed in power reception portion reaches at or above the first shift rate
Hold automatic disengagement；Under second gear clutched state, the rotary driving force passes to power output portion with the second rotating ratio,
At this point, if second gear throw-out-of clutch, unilateral bearing connects automatically when the revolving speed in power reception portion reaches or shift gears less than second rate
It closes；The second shift rate is less than the first shift rate.
According to the preferred embodiment of the present invention, the engaging force of the second gear clutch is provided by oil pressure, the oil pressure by
Oil pump provides, and the torque in the power output portion is higher, then the oil pressure that the oil pump provides is higher.
According to the preferred embodiment of the present invention, the oil pump is mechanical oil pump.
According to the preferred embodiment of the present invention, the engagement of the second gear clutch and disengagement are by an electrichydraulic control assembly
Control.
According to the preferred embodiment of the present invention, the speed ratio converter section further includes synchronizer, the power output portion packet
Engagement gear ring is included, power reception portion can be engaged or be separated with the engagement gear ring by the synchronizer.
According to the preferred embodiment of the present invention, when the synchronizer make power reception portion with it is described engage gear ring engagement and
When power reception portion reversely rotates, the engagement gear ring drives power output portion and power reception portion synchronous rotary, is formed
It reverses gear.
According to the preferred embodiment of the present invention, when the synchronizer make power reception portion with it is described engage gear ring engagement but
When power reception portion rotates in the forward direction, the engagement gear ring drives power output portion and power reception portion synchronous rotary, is formed
One gear.
According to the preferred embodiment of the present invention, when power reception portion rotates in the forward direction and revolving speed rises to the first synchronizer speed
When rate, the synchronizer separates power reception portion with the engagement gear ring；When power reception portion rotate in the forward direction and revolving speed decline
When to the second synchronizer rate, the synchronizer makes the rotation in power reception portion engage gear ring engagement with described.
According to the preferred embodiment of the present invention, the synchronizer is with the engagement for engaging gear ring and disengagement by an electricity
Son shift assembly control.
According to the preferred embodiment of the present invention, the second synchronizer rate is less than the first synchronizer rate.
According to the preferred embodiment of the present invention, the first synchronizer rate less than first shift rate, described second
Synchronizer rate is less than the second shift rate.
According to the preferred embodiment of the present invention, the power output portion includes a gear driving gear and second gear driving tooth
Wheel, a gear driving gear are fixedly connected with the outer ring of unilateral bearing, and engagement gear ring is fixed on a gear driving gear；Second gear is actively
Gear is fixed in the Partner of second gear clutch.
According to the preferred embodiment of the present invention, the power reception is a shaft, a gear driving gear and second gear
The equal free end bearing of driving gear is in the shaft.
According to the preferred embodiment of the present invention, the power output portion further includes a gear driven gear and second gear passive tooth
Wheel is engaged in a gear driving gear and two gear driving gear using as transmission gear respectively.
According to the preferred embodiment of the present invention, the power output portion further includes gear of output end, passive with a gear
Gear, second gear driven gear rotate synchronously.
According to the preferred embodiment of the present invention, the gear of output end, a gear driven gear, second gear driven gear are solid
It is connected on a jackshaft.
Meanwhile the present invention also proposes a kind of control method of corresponding two-speed automatic transmission, the two-gear automatic speed changing
Device includes power reception portion, power output portion and speed ratio converter section, and the speed ratio converter section includes being coupled to power reception portion
Unilateral bearing and second gear clutch, which comprises
Power reception portion receives rotary driving force from outside；Speed ratio converter section is by the rotary driving force with the first rotating ratio
Or second rotating ratio pass to power output portion, in which: under unilateral bearing engagement state, if the revolving speed in power reception portion reaches
Or when being higher than the first shift rate, engaging second gear clutch, unilateral bearing disengages automatically；In second gear clutched state
Under, if the revolving speed in power reception portion reaches or shift gears less than second rate, make second gear throw-out-of clutch, unilateral bearing connects automatically
It closes.Power output portion exports the rotary driving force that speed ratio converter section transmits to the wheel shaft of automobile.
According to the preferred embodiment of the present invention, the engagement of the second gear clutch is controlled by an electrichydraulic control assembly
With disengagement.
According to the preferred embodiment of the present invention, the speed ratio converter section further includes synchronizer, the power output portion packet
Engagement gear ring is included, power reception portion is engaged or separated with the engagement gear ring by the movement by controlling synchronizer.
According to the preferred embodiment of the present invention, when the synchronizer make power reception portion with it is described engage gear ring engagement and
When power reception portion reversely rotates, the engagement gear ring drives power output portion and power reception portion synchronous rotary, is formed
It reverses gear.
According to the preferred embodiment of the present invention, when the synchronizer make power reception portion with it is described engage gear ring engagement but
When power reception portion rotates in the forward direction, the engagement gear ring drives power output portion and power reception portion synchronous rotary, is formed
One gear.
According to the preferred embodiment of the present invention, when power reception portion rotates in the forward direction and revolving speed rises to the first synchronizer speed
When rate, the synchronizer separates power reception portion with the engagement gear ring；When power reception portion rotate in the forward direction and revolving speed decline
When to the second synchronizer rate, the synchronizer makes the rotation in power reception portion engage gear ring engagement with described.
According to the preferred embodiment of the present invention, the synchronizer and the engagement are controlled by an electric gear change assembly
The engagement and disengagement of gear ring.
According to the preferred embodiment of the present invention, the second synchronizer rate is less than the first synchronizer rate.
According to the preferred embodiment of the present invention, the first synchronizer rate less than first shift rate, described second
Synchronizer rate is less than the second shift rate.
(3) beneficial effect
Compared with the prior art, the invention has the following beneficial effects:
(1) present invention realizes two speed ratios, so that a gear dynamic property is stronger, motor speed is lower when second gear high speed,
So that motor working efficiency is higher, the course continuation mileage of pure electric automobile is improved.
(2) present invention uses the combination of single clutch and synchronizer and unilateral bearing, therefore at low cost.
(3) structure that the present invention is applied in combination using single clutch and synchronizer and unilateral bearing, so that one keeps off and reverses gear
When do not need operation of oil pump support.The efficiency losses for reducing oil pump pump oil improve the course continuation mileage of pure electric automobile.
(4) this hair has 1 clutch of control that two gears can be realized, and electronic controlling strategies are simpler, hydraulic behaviour
Control system is simpler, and cost is lower.
(5) only one clutch needs oil pump pump oil to support in the present invention, reduces oil pump volume and power loss, subtracts
Work oil mass is lacked, has improved pure electric automobile speed automatic transmission working efficiency, to increase the continuation of the journey of pure electric automobile
Mileage.
(6) for the present invention when oil pump breaks down, a gear is still can be used and traveling of reversing gear in pure electric automobile, it is ensured that security row
Sail go back to maintenance station.
(7) for the present invention in most of electronic system malfunction, a gear is still can be used and traveling of reversing gear in pure electric automobile, it is ensured that
Drive safely back maintenance station.
Detailed description of the invention
Fig. 1 is the component design drawing of one embodiment of two-speed automatic transmission of the invention；
Fig. 2 is the flow chart of the control method of the embodiment of Fig. 1.
Specific embodiment
Generally speaking, proposed by the present invention is a kind of two automatic transmission kept off, i.e., there are two forward gears for speed changer tool
Position, i.e. " gear " and " second gear ", " gear " are bottom gear, and " second gear " is top gear.Certainly, in the specific implementation, of the invention
Automatic transmission can also realize " reversing gear ".
Although present invention is preferably applied in pure electric automobile, this is not meant to that the present invention may not apply to
Use is not precluded in the automobile of non-pure electric vehicle, such as oil-electric vehicle or traditional fuel power automobile, the present invention, this
It is because which kind of engine is the present invention, which be not intended to limit by, provides the power of rotation.In addition, the present invention be not limited in four-wheel with
On automobile, in fact, the present invention is in being applied to three-wheel, two-wheeled or wheelbarrow there is no any technology barrier.Namely
It says, automatic transmission of the invention can actually be applied to the vehicles of two forward ranges of any required offer.
Automatic transmission of the invention may include power reception portion, power output according to saying in the division of functional component
Portion and speed ratio converter section, power reception portion are used to receive rotary driving force from outside, and speed ratio converter section is used to drive the rotation
Power passes to power output portion, and power output portion is for exporting the rotary driving force that speed ratio converter section transmits to the wheel of automobile
Axis.Since the present invention is the automatic transmission of two gears, speed ratio converter section can be enough with the first rotating ratio or the second rotating ratio
Transmit rotary driving force." the first rotating ratio " and " the second rotating ratio " herein refer to power output portion and power reception portion it
Between rotating ratio, or for driving ratio.In the description of the invention, " the first rotating ratio " can be defined and be greater than " the second revolving speed
Than ", i.e., it respectively corresponds " gear " and " second gear ".
Power reception portion and power output portion of the invention is single.Power reception portion is without being particularly limited to, Ren Heneng
Receiving any part that rotary driving force and revolving speed change with driving part can be used as power reception portion.But usually,
Power reception portion is embodied as a shaft, receives rotary driving force from such as motor.But the present invention is not limited to shafts
Specific structure.
Crucial innovation of the invention is to propose a kind of speed ratio converter section structure of innovation, specifically comprising
Be coupled to the unilateral bearing and second gear clutch in power reception portion, wherein second gear clutch be only used for " one gear " and
The clutch converted between " second gear ", therefore the present invention can be described as single clutch structure.
The structure of unilateral bearing is known technology, its working principle is that: torque can only from inner ring to outer ring unidirectional delivery,
It cannot be transmitted from outer ring to inner ring, inner ring and power reception portion are affixed, and outer ring and power output portion are affixed.Therefore, when torque side
To (or being referred to as to engage) when inner ring being made to drive outer ring, inner ring and outer ring is rotated synchronously, and can realize torque transfer；And works as and turn
When square direction makes a kind of outer ring driving inner ring (and non-genuine driving, only tendency), pass is freely rotated in inner ring and outer ring formation
System's (or to disengage), that is, cannot achieve torque transfer.According to the present invention, under unilateral bearing engagement state, by power reception
The received rotary driving force in portion passes to power output portion with the first rotating ratio, i.e. " gear ".At this point, if power reception portion turns
When speed reaches at or above the first shift rate, the engagement of second gear clutch, unilateral bearing disengages automatically, completes from " gear " to " two
The automatic conversion of gear ".And under second gear clutched state, it is defeated that the rotary driving force with the second rotating ratio passes to power
Portion out, as " second gear ", at this point, if second gear clutch is de- when the revolving speed in power reception portion reaches or shift gears less than second rate
It opens, unilateral bearing engages automatically, completes the automatic conversion from " second gear " to " gear ".
In view of the efficiency of gear-change operation in practical driving procedure, the preferably second shift rate is less than first shift
Rate.
Realize that the principle of above-mentioned gear conversion is to cooperate between unilateral bearing and second gear clutch.Therefore, this hair
As long as bright control second gear clutch engagement, the revolving speed decline in power reception portion, at this point, the inner ring revolving speed of unilateral bearing is under
Drop, when torque direction is to drive inner ring by outer ring by inner ring driving outer ring variation, thus inner ring and outer ring is disengaged, complete " one
Gear " arrives the automatic conversion of " second gear ".Opposite, as long as the present invention is when control second gear throw-out-of clutch, the revolving speed in power reception portion
It increases, at this point, the inner ring revolving speed of unilateral bearing increases, when torque direction is driven by the variation of outer ring driving inner ring by inner ring
Thus outer ring, inner ring and outer ring engage, complete the automatic conversion of " second gear " to " gear ".
As it can be seen that the present invention, which need to only control the engagement of second gear clutch and disengagement, to shift gears automatically.And second gear clutch
The control of device can then realize by the prior art, this makes structure of the invention compact and highly reliable.In the present invention, it is preferred that two
The engagement for keeping off clutch is provided with disengagement by hydraulic pressure, specifically oil pressure can be provided by an oil pump, by the way that oil pump to be coupled to
Power output portion (or arbitrarily being can provide in the shaft of revolving speed in speed changer), the torque in power output portion is higher, then the oil pump
The oil pressure of offer is higher.Preferably, the oil pump is mechanical oil pump, and structure thus can be made simple and reduce cost.
According to the preferred embodiment of the present invention, two-gear transmission can also additional realization reverse gear.It is of the invention as a result,
The speed ratio converter section preferably further includes synchronizer, and power output portion further includes engagement gear ring.Power is connect by synchronizer
Receipts portion engages or separates with engagement gear ring, and when engaged, power and power output portion rotate synchronously, and realizes driving when reversing gear.
Need to illustrate when, when reversing gear, since the rotation direction of rotary driving force is in inverted status, unilateral bearing is in de- automatically
Open state.And second gear clutch is also controlled by disengaged condition at this time.That is, when the synchronizer makes power reception portion
Gear ring engagement is engaged and when power reception portion reversely rotates with described, and the engagement gear ring drives power output portion and the power
Receiving unit synchronous rotary is now in " reversing gear " working condition.
According to the preferred embodiment of the present invention, when electric car is static, speed changer can not prejudge driver's next step
Operation is to hang forward gear or reverse gear.In order to reverse gear switch when it is more quick, the present invention rotates in the forward direction in power reception portion
And revolving speed in a certain range (normally below some value) when, control synchronizer in advance for power reception portion and the soldered tooth
Circle engagement.In this way, when driver hangs forward gear by static or low speed, when power reception portion rotates in the forward direction, electric car can be
One gear, which advances, to travel；When driver is reversed gear by static or low speed extension, when power reception portion reversely rotates, electric car can fallen
Gear falls back traveling.The advance or retroversion starting of electric car are more quick, without waiting for engagement gear ring and the power reception portion
Engaging process.
A kind of specific embodiment is, when power reception portion rotates in the forward direction and revolving speed rises to the first synchronizer rate
When, the synchronizer separates power reception portion with the engagement gear ring；When power reception portion rotates in the forward direction and revolving speed drops to
When the second synchronizer rate, the synchronizer makes the rotation in power reception portion engage gear ring engagement with described.Synchronizer with it is described
The engagement and disengagement for engaging gear ring can be controlled by an electric gear change assembly.In view of the optimization of actual operating efficiency, institute
Stating the second synchronizer rate can be set to less than the first synchronizer rate.
Further, since unilateral bearing is unable to the characteristic of back transfer torque, reverses gear and synchronizer is needed to be in joint shape always
State, therefore the output par, c with a gear common power output section of reversing gear, therefore the first synchronizer rate should be set and be less than
First shift rate, the second synchronizer rate is less than the second shift rate.
For power output portion, since there are two forward ranges for present invention design, and the output par, c reversed gear is preferred
Ground can share the output par, c of a gear, and therefore, there are two driving gear, i.e., one gears for power output portion of the invention preferably tool
Driving gear and two gear driving gear, a gear driving gear is fixedly connected with the outer ring of unilateral bearing, and is engaged gear ring and be fixed in
On one gear driving gear；Two gear driving gear is fixed in the Partner of second gear clutch.A gear driving gear can drive as a result,
By unidirectional bearing outer ring forward driving when dynamic portion rotates forward, it is back-driven into driving portion reversion via engagement gear ring.Second gear master
Moving gear is driven at " second gear " by second gear clutch.Preferably, a gear driving gear and the equal free end bearing of two gear driving gear
In the shaft as power reception portion.
In addition, preferably, power output portion of the invention correspondingly has a gear driven gear, second gear quilt
Moving gear is engaged in a gear driving gear and two gear driving gear using as transmission gear respectively.And as power output end,
It may also include the gear of output end rotated synchronously with a gear driven gear, second gear driven gear, gear of output end and differential mechanism tooth
Wheel engagement, and the structure of differential mechanism to wheel shaft is the prior art, is no longer described in detail in this specification.Gear of output end, one
Gear driven gear, second gear driven gear can be fixed on a jackshaft, be achieved in the synchronous rotation of three.
Certainly, in order to accommodate the above-mentioned all parts of speed changer of the invention, speed changer can also have a shell, described
Shaft as power reception portion and the jackshaft as intermediate transfer power can be supported on shell and be formed certainly with shell
By rotating.
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in further detail.
Fig. 1 is the component design drawing of one embodiment of two-speed automatic transmission of the invention.As shown in Figure 1, the implementation
Example is embodied as the automatic transmission of a pure electric automobile comprising input shaft 1, one keep off driving gear 2, two gear driving gear 3,
Jackshaft 4, second gear driven gear 5, gear of output end 6, differential gear 7, one keep off driven gear 8, differential assembly 9, second gear
Clutch drive end 16, second gear clutch Partner 17, unilateral bearing 12, synchronizer assembly 13, splined hub 14, engagement gear ring
15, mechanical oil pump assembly 18, shell 19, electric gear change assembly 20 and electrichydraulic control assembly 21.
Wherein, input shaft 1 is connect with the driving motor of external pure electric automobile by spline, the both ends difference of input shaft 1
Through bearing support on shell 19, and relationship is freely rotated with the formation of shell 19.The shell and speed change of mechanical oil pump assembly 18
Device shell 19 is bolted to connection.18 inner rotator of mechanical oil pump assembly is unidirectionally connect by unilateral bearing with input shaft 1.
When external drive motors are positive direction of rotation, input shaft 1 drives mechanical 18 inner rotator synchronous rotary of oil pump assy.It is external
Driving motor is when reversely rotating direction, and 18 inner rotator of oil pump assy and the formation of input shaft 1 rotate freely relationship.
Engagement gear ring 15 is integrated processing or welding etc. with a gear driving gear 2 and is fixedly connected with relationship.Splined hub 14 with it is defeated
Enter axis 1 to be fixedly connected by spline, and input shaft 1 is followed to rotate synchronously.Synchronizer assembly 13 can be in electric gear change assembly 20
Control under move, thus its can by splined hub 14 and engagement gear ring 15 link together, formed synchronous rotation relationship.
The inner ring of unilateral bearing 12 is that interference fit is fixedly connected, and input shaft 1 is followed to rotate synchronously with input shaft 1.It is single
It is fixedly connected to the outer ring of bearing 12 with a gear driving gear 2 for interference fit.Unilateral bearing 12 is known currently on the market produces
Product, its working principle is that torque is from inner ring to outer ring unidirectional delivery.I.e. when torque direction is that inner ring drives outer ring, inner ring and outer
Circle rotates synchronously, and can realize torque transfer；When torque direction is that outer ring drives inner ring, inner ring and outer ring is disengaged and is formed certainly
By rotation relation, torque transfer cannot achieve.
Two gear driving gear 3 is supported on input shaft 1 by bearing, and relationship is freely rotated with the formation of input shaft 1.Second gear
Clutch drive end 16 is connected to one with input shaft 1 by welding or be bolted etc., and follows input shaft 1 synchronous
Rotation.
The both ends of jackshaft 4 pass through bearing support on case of transmission 19 respectively, and are formed certainly with case of transmission 19
By rotation relation.One gear driven gear 8 by being integrally machined, welding, spline or arbitrarily be fixedly connected mode and jackshaft 4 fixation
Connection, and rotated synchronously with jackshaft 4.Second gear driven gear 5 by being integrally machined, welding, spline or any side of being fixedly connected
Formula is fixedly connected with jackshaft 4, and is rotated synchronously with jackshaft 4.Gear of output end 6 by be integrally machined, weld, spline or appoint
Meaning is fixedly connected with mode and is fixedly connected with jackshaft 4, and rotates synchronously with jackshaft 4.Differential gear 7 and differential assembly 9
It is bolted to connection, and is rotated synchronously with differential assembly 9.Differential assembly 9 is by bearing support in case of transmission
On 19, and relationship is freely rotated with the formation of case of transmission 19.Differential assembly 9 is known product currently on the market.
The right axle 10 and left hand side half shaft 11 of pure electric automobile pass through respectively to be connected inside spline and differential assembly 9,
And it is driven and is rotated according to itself working principle by differential assembly 9.Electric gear change assembly 20 can be manipulated according to control instruction and be synchronized
Device assembly 13 moves left and right.Electrichydraulic control assembly 21 can one second gear clutch drive end 16 and second gear are manipulated according to control instruction
Clutch Partner 17 is closed mutually, disengages or is formed the relatively sliding rotation relation that rubs of specific rotation speeds.
The working principle for stating the speed changer of embodiment is described below.
(1) one gear working principle
When pure electric automobile original place is static, 1 revolving speed of input shaft is zero, and mechanical oil pump assembly 18 does not work.Electric gear change is total
Synchronizer assembly 13 and the main Partner 16,17 of second gear clutch can not controlled 20 and electrichydraulic control assembly 21, so that synchronizer is total
At 13 and the main Partner of second gear clutch 16,17 all in default conditions.Two-speed automatic transmission automatically forms a gear at this time.
When pure electric automobile is started to walk, the revolving speed of input shaft 1 is gradually risen, and mechanical oil pump assembly 18 is started to work, machinery oil
Pump assembly 18 rotates the oil liquid flow pumped out and gradually increases, but flow is it is possible to too low without being able to satisfy use demand.Electronics
Shift assembly 20 and electrichydraulic control assembly 21 do not control synchronizer assembly 13 and the main Partner 16,17 of second gear clutch, so that together
Device assembly 13 and the main Partner of second gear clutch 16,17 are walked all in default conditions.Two-speed automatic transmission automatically forms at this time
One gear.
When pure electric automobile normally travel, the revolving speed of input shaft 1 is increased to 500 revolutions per minute kinds and (does not limit 500 revolutions per minute
Kind) more than, 18 rotary rpm of mechanical oil pump assembly satisfies the use demand enough the fuel-displaced flow quantity of rotary pump.Electric gear change is total
Synchronizer assembly 13 and the main Partner 16,17 of second gear clutch can not controlled 20 and electrichydraulic control assembly 21, so that synchronizer is total
At 13 and the main Partner of second gear clutch 16,17 all in default conditions.Two-speed automatic transmission automatically forms a gear at this time.
Mechanical oil pump assembly 18 breaks down or speed changer inner fluid deficiency causes the rotation of mechanical oil pump assembly 18 to pump out
When oil liquid underfed is required with meeting the main compression of Partner 16,17 of second gear clutch.And electric gear change assembly 20 does not control together
Step device assembly 13 makes synchronizer assembly 13 be in default conditions.Two-speed automatic transmission automatically forms a gear at this time.
When two-speed automatic transmission electric gear change assembly 20 or electrichydraulic control assembly 21 break down, electric gear change assembly 20
Synchronizer assembly 13 and the main Partner 16,17 of second gear clutch are not controlled with electrichydraulic control assembly 21, so that synchronizer assembly 13
With the main Partner of second gear clutch 16,17 all in default conditions.Two-speed automatic transmission automatically forms a gear at this time.
When two-speed automatic transmission forms a gear, the torque transfer route of external drive motors is successively are as follows: input shaft 1,
12 inner ring of unilateral bearing, 12 outer ring of unilateral bearing, to a gear driving gear 2, a gear driven gear 8, jackshaft 4, output end tooth
Take turns 6, differential gear 7, differential assembly 9, right side and left side semiaxis 10 and 11.
When two-speed automatic transmission forms a gear, the gear ratio calculation method of two-speed automatic transmission are as follows:
Wherein: i1For the speed ratio of a gear；z2、z8、z6、z7Respectively one gear driving gear 2, one keeps off driven gear 8, output end
The number of gear teeth of gear 6, differential gear 7.
(2) second gear working principle
When pure electric automobile normally travel, the revolving speed of input shaft 1 is increased to 500 revolutions per minute kinds and (does not limit 500 revolutions per minute
Kind) more than, 18 rotary rpm of mechanical oil pump assembly satisfies the use demand enough the fuel-displaced flow quantity of rotary pump.Electric gear change is total
Synchronizer assembly 13 can not controlled 20 so that synchronizer assembly 13 is in default conditions.Electrichydraulic control assembly 21 controls machinery oil
The oil liquid oil pressure that pump assembly 18 exports makes the main Partner 16,17 of second gear clutch compress closure mutually.So that input shaft 1 turns
Speed gradually decreases in the main Partner 16 of second gear clutch, 17 closing courses, and makes the revolving speed of a gear driving gear 2 lower than one
The revolving speed of driven gear 8 is kept off, relationship, a gear power transmission path interruptions are freely rotated in the formation of 12 inner ring and outer ring of unilateral bearing.
Two-speed automatic transmission forms second gear under the control action of electrichydraulic control assembly 21 at this time.
When two-speed automatic transmission forms second gear, the torque transfer route of external drive motors is successively are as follows: input shaft 1,
Two gear driving gear 3, second gear driven gear 5, jackshaft 4, gear of output end 6, differential gear 7, differential assembly 9, right side
With left hand side half shaft 10 and 11.
When two-speed automatic transmission forms second gear, the gear ratio calculation method of two-speed automatic transmission are as follows:Wherein: i2For the speed ratio of second gear；z3、z5、z6、z7Respectively two gear driving gear 3, second gear driven gear 5, defeated
The number of gear teeth of outlet gear 6, differential gear 7.
(3) it reverses gear working principle
When pure electric automobile original place is static, 1 revolving speed of input shaft is zero, and mechanical oil pump assembly 18 does not work.Electrichydraulic control is total
The main Partner 16,17 of second gear clutch can not controlled 21, so that the main Partner of second gear clutch 16,17 is all in default conditions.
Electric gear change assembly 20 controls the movement of synchronizer assembly 13, is connected splined hub 14 and engagement gear ring 15 by synchronizer assembly 13
Together, synchronous rotation relationship is formed.Two-speed automatic transmission formation at this time is reversed gear.
Pure electric automobile reverses gear starting or when normal reverse travel, reverse rotation of the external drive motors with driven input shaft 1,
Revolving speed gradually rises, and mechanical oil pump assembly 18 rotates freely under the action of unilateral bearing to work, and it is fuel-displaced to be unable to rotary pump
Liquid.Electrichydraulic control assembly 21 does not control the main Partner 16,17 of second gear clutch, so that the main Partner 16,17 of second gear clutch is all
In default conditions.It is mobile that electrichydraulic control assembly 21 controls synchronizer assembly 13, by synchronizer assembly 13 by 14 He of splined hub
Engagement gear ring 15 links together, and forms synchronous rotation relationship.Since external input motor is to reversely rotate, pure electric vehicle vapour
Vehicle travels backward, and two-speed automatic transmission formation at this time is reversed gear.
When the failure of mechanical oil pump assembly 18 or speed changer inner fluid deficiency, electric gear change assembly 20 is still controllable to be synchronized
Device assembly 13 is mobile, and splined hub 14 and engagement gear ring 15 are linked together by synchronizer assembly 13, is formed to rotate synchronously and be closed
System.Two-speed automatic transmission formation at this time is reversed gear.
When two-speed automatic transmission electrichydraulic control assembly 21 breaks down, the still controllable synchronizer of electric gear change assembly 20 is total
It is mobile at 13, splined hub 14 and engagement gear ring 15 are linked together by synchronizer assembly 13, form synchronous rotation relationship.This
When two-speed automatic transmission formation reverse gear.
When two-speed automatic transmission formation is reversed gear, the torque transfer route of external drive motors is successively are as follows: input shaft 1,
Splined hub 14, synchronizer assembly 13 engage gear ring 15, a gear driving gear 2, a gear driven gear 8, jackshaft 4, output end tooth
Take turns 6, differential gear 7, differential assembly 9, right side and left side semiaxis 10 and 11.
When two-speed automatic transmission formed to gear when, the gear ratio calculation method of two-speed automatic transmission are as follows:
Wherein: iRFor the speed ratio of a gear；z2、z8、z6、z7Respectively one gear driving gear 2, one keeps off driven gear 8, output end
The number of gear teeth of gear 6, differential gear 7.
Illustrate the control method of the embodiment of the invention below with reference to Fig. 2:
S0: electric car powers on, the electronic controller of two-speed automatic transmission of the invention (including electric gear change assembly 20
With electrichydraulic control assembly 21) it powers on and enters standby mode.
S1: judge whether gear lever is in the position P or N (P gear or N gear).
It is then driving motor to be allowed to start；Synchronizer 13 engages, and clutch 16 disengages (default conditions)；It is no, then do not allow
Driving motor starting.And return step S0 state.
S2: judge whether gear lever is linked into the position D.
It is that then automatic transmission enters a gear, synchronizer 13 engages, and clutch 16 disengages (default conditions)；It is no, then automatically
Speed changer enters the S7 stage.
S3: judge whether speed is higher than the first synchronizer vehicle velocity Va。
VaSpeed, V are judged for synchronizer stateaThe size of numerical value determines by throttle, i.e. Va=fa(throttle).Special,
When throttle is 0%, VaPer hour equal to 50 kilometers.V in actual mechanical processa=fa(throttle) can be appointing for engineer's setting
Meaning function.
It is that then synchronizer 13 disengages；It is no, then keep one gear state of previous step.
S4: judge whether speed is higher than the first shift vehicle velocity V1。
First shift vehicle velocity V1The shift for rising second gear for a gear judges speed, V1The size of numerical value determines by throttle, i.e. V1=
f1(throttle).Special, when throttle is 20%, speed V1Per hour equal to 75 kilometers.V in actual mechanical process1=f1
(throttle) can be the arbitrary function of engineer's setting.
It is that then clutch 16 engages, automatic transmission enters second gear；
It is no, then keep previous step one to keep off, and the state that synchronizer 13 disengages.
S5: judge whether speed is lower than the second shift vehicle velocity V2。
V2Shift for one gear of second gear drop judges speed, V2The size of numerical value determines by throttle, i.e. V2=f2(throttle).It is special
Different, when throttle is 0%, speed V2Per hour equal to 40 kilometers.V in actual mechanical process2=f2(throttle) can be work
The arbitrary function of Cheng Shi setting.
It is that then clutch 16 disengages, automatic transmission enters a gear；
It is no, then keep previous step second gear state.
S6: judge whether speed is lower than the second synchronizer vehicle velocity Vb。VbSpeed, V are judged for synchronizer engagementbNumerical value it is big
It is small to be determined by throttle, i.e. Vb=fb(throttle).Special, when throttle is 0%, speed VbPer hour equal to 35 kilometers.It is practical
V in operating processb=fb(throttle) can be the arbitrary function of engineer's setting.
It is that then synchronizer 13 engages；
It is no, then keep previous step one to keep off, and the state that synchronizer 13 disengages.
S7: judge whether gear lever is linked into the position R (reversing gear).
It is that then automatic transmission enters R gear, synchronizer 13 engages, and clutch 16 disengages (default conditions)；
It is no, then return to N or P the gear state of S1 step；
S8: judge whether gear lever has exited the position R.
It is N or P the gear state for then returning to S1 step；
It is no, then keep the R of S7 step to keep off state.
It should be noted that in above-mentioned control method, the first synchronizer vehicle velocity Va, the second synchronizer vehicle velocity Vb, first shift
Vehicle velocity V1, second shift vehicle velocity V2It is fast with first synchronizer of power reception portion above-mentioned (shaft or input shaft 1) rotation respectively
Rate, the second synchronizer rate, the first shift rate, the second shift rate are corresponding.That is, synchronizer state of the invention
Switching, clutch state switching are all based on speed to judge.And above-mentioned correspondence is when taken turns about current revolving speed is depended on
The outer diameter of tire.
By upper description it is found that two-gear transmission proposed by the present invention has following advantage compared with the existing technology:
(1) single clutch, synchronizer and unilateral bearing are applied in combination, so that the present invention is got rid of in a gear and while reversing gear
Dependence to oil pump, so that two gears can be realized in the opening and closing state that electrohydraulic control system only controls a clutch
Position.Also, under the fault conditions such as oil pump breaks down, oil liquid is insufficient, electrohydraulic system failure, pure electric automobile can still be adopted
With a gear and traveling of reversing gear.
(2) unilateral bearing is used, so that the one torque transfer route kept off when second gear clutch drive end and Partner are closed
It is automatic to disengage.
(3) mechanical oil pump with unilateral bearing is used, so that mechanical oil pump does not work when input shaft 1 inverts.
(4) synchronizer assembly structure is used, external motor is formed when reversely rotating and is reversed gear.
(5) synchronizer state of the present invention judges vehicle velocity Va, when speed is higher than VaWhen, synchronizer 13 disengages, when speed is lower than Vb
When, synchronizer 13 engages.Vehicle velocity VaLess than vehicle velocity Vb, VaAnd VbBuffering matching relationship is formed, 13 state of a control of synchronizer can be maintained
Stabilization, reduce synchronizer 13 state frequent switching.
(6) two speed ratios make a gear dynamic property stronger, and motor speed is lower when second gear high speed, and motor works as a result,
It is more efficient, improve the course continuation mileage of pure electric automobile.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Describe in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in protection of the invention
Within the scope of.
Claims (25)
1. a kind of two-speed automatic transmission, including power reception portion, power output portion and speed ratio converter section, power reception portion are used for
Rotary driving force is received from outside, speed ratio converter section is used to pass the rotary driving force with the first rotating ratio or the second rotating ratio
Power output portion is passed, power output portion is used to export the rotary driving force that speed ratio converter section transmits to the wheel shaft of automobile,
It is characterized in that:
The speed ratio converter section includes the unilateral bearing and second gear clutch for being coupled to power reception portion, also,
Under unilateral bearing engagement state, the rotary driving force passes to power output portion with the first rotating ratio, at this point, if dynamic
When the revolving speed of power receiving unit reaches at or above the first shift rate, second gear clutch engagement, unilateral bearing disengages automatically；
Under second gear clutched state, the rotary driving force passes to power output portion with the second rotating ratio, at this point, if
When the revolving speed in power reception portion reaches or shift gears less than second rate, second gear throw-out-of clutch, unilateral bearing engages automatically；
The second shift rate is less than the first shift rate.
2. two-speed automatic transmission as described in claim 1, which is characterized in that
The engaging force of the second gear clutch is provided by oil pressure, and the oil pressure is provided by oil pump, the torque in the power output portion
Higher, then the oil pressure that the oil pump provides is higher.
3. two-speed automatic transmission as claimed in claim 2, which is characterized in that the oil pump is mechanical oil pump.
4. two-speed automatic transmission as claimed in claim 2, which is characterized in that the engagement of the second gear clutch and disengage by
One electrichydraulic control assembly control.
5. two-speed automatic transmission as described in claim 1, which is characterized in that the speed ratio converter section further includes synchronizer,
The power output portion include engagement gear ring, the synchronizer can by power reception portion with it is described engage gear ring engage or divide
From.
6. two-speed automatic transmission as claimed in claim 5, which is characterized in that when the synchronizer makes power reception portion and institute
When stating the engagement of engagement gear ring and the reverse rotation of power reception portion, the engagement gear ring drives power output portion and the power reception
Portion's synchronous rotary, formation are reversed gear.
7. two-speed automatic transmission as claimed in claim 5, which is characterized in that when the synchronizer makes power reception portion and institute
The engagement of engagement gear ring but power reception portion are stated when rotating in the forward direction, the engagement gear ring drives power output portion and the power reception
Portion's synchronous rotary forms a gear.
8. two-speed automatic transmission as claimed in claim 7, which is characterized in that when power reception portion rotates in the forward direction and on revolving speed
When rising to the first synchronizer rate, the synchronizer separates power reception portion with the engagement gear ring；When power reception portion just
To rotation and when revolving speed drops to the second synchronizer rate, the synchronizer makes the rotation in power reception portion and the engagement gear ring
Engagement.
9. two-speed automatic transmission as claimed in claim 8, which is characterized in that the synchronizer engages connecing for gear ring with described
It closes and disengages by an electric gear change assembly control.
10. two-speed automatic transmission as claimed in claim 8, which is characterized in that the second synchronizer rate is less than first
Synchronizer rate.
11. two-speed automatic transmission as claimed in claim 10, which is characterized in that the first synchronizer rate is less than first
Shift rate, the second synchronizer rate is less than the second shift rate.
12. two-speed automatic transmission as claimed in claim 5, which is characterized in that the power output portion includes a gear active
Gear and two gear driving gear, a gear driving gear are fixedly connected with the outer ring of unilateral bearing, and engagement gear ring is fixed in a gear master
On moving gear；Two gear driving gear is fixed in the Partner of second gear clutch.
13. two-speed automatic transmission as claimed in claim 12, which is characterized in that the power reception is a shaft, described
One gear driving gear and the equal free end bearing of two gear driving gear are in the shaft.
14. two-speed automatic transmission as claimed in claim 12, which is characterized in that the power output portion further includes a gear quilt
Moving gear and second gear driven gear are engaged in a gear driving gear and two gear driving gear using as transmission gear respectively.
15. two-speed automatic transmission as claimed in claim 14, which is characterized in that the power output portion further includes output end
Gear is rotated synchronously with a gear driven gear, second gear driven gear.
16. two-speed automatic transmission as claimed in claim 15, which is characterized in that the gear of output end, a gear passive tooth
Wheel, second gear driven gear are fixed on a jackshaft.
17. a kind of control method of two-speed automatic transmission, the two-speed automatic transmission includes power reception portion, power output
Portion and speed ratio converter section, the speed ratio converter section includes the unilateral bearing and second gear clutch for being coupled to power reception portion, described
Method includes:
Power reception portion receives rotary driving force from outside；
The rotary driving force is passed to power output portion with the first rotating ratio or the second rotating ratio by speed ratio converter section, in which:
Under unilateral bearing engagement state, if the revolving speed in power reception portion reaches at or above the first shift rate, make second gear clutch
Engagement, unilateral bearing disengage automatically；Under second gear clutched state, if the revolving speed in power reception portion reaches or less than second
When rate of shifting gears, make second gear throw-out-of clutch, unilateral bearing engages automatically；
Power output portion exports the rotary driving force that speed ratio converter section transmits to the wheel shaft of automobile.
18. the control method of two-speed automatic transmission as claimed in claim 17, which is characterized in that pass through an electrichydraulic control
Assembly controls the engagement and disengagement of the second gear clutch.
19. the control method of two-speed automatic transmission as claimed in claim 17, which is characterized in that the speed ratio converter section is also
Including synchronizer, the power output portion include engagement gear ring, by control synchronizer movement by power reception portion with it is described
Engage gear ring engagement or separation.
20. two-speed automatic transmission as claimed in claim 19, which is characterized in that when the synchronizer make power reception portion with
When the engagement gear ring engagement and the reverse rotation of power reception portion, the engagement gear ring drives power output portion to connect with the power
Receipts portion synchronous rotary, formation are reversed gear.
21. the control method of two-speed automatic transmission as claimed in claim 20, which is characterized in that when the synchronizer makes
Power receiving unit engages gear ring engagement but when power reception portion rotates in the forward direction with described, the engagement gear ring drive power output portion and
Power reception portion synchronous rotary forms a gear.
22. the control method of two-speed automatic transmission as claimed in claim 21, which is characterized in that when power reception portion forward direction
Rotation and revolving speed is when rising to the first synchronizer rate, the synchronizer separates power reception portion with the engagement gear ring；When
When power reception portion rotates in the forward direction and revolving speed drops to the second synchronizer rate, the synchronizer make the rotation in power reception portion with
The engagement gear ring engagement.
23. the control method of two-speed automatic transmission as claimed in claim 22, which is characterized in that pass through an electric gear change
Assembly controls the synchronizer and the engagement and disengagement for engaging gear ring.
24. the control method of two-speed automatic transmission as claimed in claim 22, which is characterized in that the second synchronizer speed
Rate is less than the first synchronizer rate.
25. the control method of two-speed automatic transmission as claimed in claim 24, which is characterized in that the first synchronizer speed
Rate is less than the first shift rate, and the second synchronizer rate is less than the second shift rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810752291.8A CN108980337B (en) | 2018-07-10 | 2018-07-10 | Two-gear automatic transmission and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810752291.8A CN108980337B (en) | 2018-07-10 | 2018-07-10 | Two-gear automatic transmission and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980337A true CN108980337A (en) | 2018-12-11 |
| CN108980337B CN108980337B (en) | 2020-10-16 |
Family
ID=64537704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810752291.8A Active CN108980337B (en) | 2018-07-10 | 2018-07-10 | Two-gear automatic transmission and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108980337B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110725907A (en) * | 2019-09-04 | 2020-01-24 | 淮阴工学院 | Two-gear transmission of electric automobile and control method thereof |
| CN113048198A (en) * | 2019-12-10 | 2021-06-29 | 博格华纳公司 | Method for operating a gear shift system for a vehicle transmission |
| EP3961065A4 (en) * | 2019-04-23 | 2022-12-21 | HJ Transmission Co., Ltd. | Power transmission device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771310A (en) * | 2010-01-29 | 2010-07-07 | 重庆宗申发动机制造有限公司 | Driving motor of electric vehicle |
| CN201928136U (en) * | 2011-01-11 | 2011-08-10 | 秦廷修 | Two-gear electrically-controlled speed change motor of electric motorcycle |
| CN104057821A (en) * | 2014-06-04 | 2014-09-24 | 合肥工业大学 | Power system assembly for two-speed electric vehicles |
| CN205715483U (en) * | 2016-06-23 | 2016-11-23 | 浙江长兴德纳克斯动力科技有限公司 | A kind of isolated conjunction two speed transmission |
| CN205780633U (en) * | 2016-07-12 | 2016-12-07 | 浙江长兴德纳克斯动力科技有限公司 | A kind of novel isolated conjunction two speed transmission |
| CN106321744A (en) * | 2016-11-04 | 2017-01-11 | 吉林大学 | Dual-motor two-gear speed changing box for electric vehicle and gear-shifting control method thereof |
-
2018
- 2018-07-10 CN CN201810752291.8A patent/CN108980337B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771310A (en) * | 2010-01-29 | 2010-07-07 | 重庆宗申发动机制造有限公司 | Driving motor of electric vehicle |
| CN201928136U (en) * | 2011-01-11 | 2011-08-10 | 秦廷修 | Two-gear electrically-controlled speed change motor of electric motorcycle |
| CN104057821A (en) * | 2014-06-04 | 2014-09-24 | 合肥工业大学 | Power system assembly for two-speed electric vehicles |
| CN205715483U (en) * | 2016-06-23 | 2016-11-23 | 浙江长兴德纳克斯动力科技有限公司 | A kind of isolated conjunction two speed transmission |
| CN205780633U (en) * | 2016-07-12 | 2016-12-07 | 浙江长兴德纳克斯动力科技有限公司 | A kind of novel isolated conjunction two speed transmission |
| CN106321744A (en) * | 2016-11-04 | 2017-01-11 | 吉林大学 | Dual-motor two-gear speed changing box for electric vehicle and gear-shifting control method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3961065A4 (en) * | 2019-04-23 | 2022-12-21 | HJ Transmission Co., Ltd. | Power transmission device |
| CN110725907A (en) * | 2019-09-04 | 2020-01-24 | 淮阴工学院 | Two-gear transmission of electric automobile and control method thereof |
| CN110725907B (en) * | 2019-09-04 | 2021-06-22 | 淮阴工学院 | Two-gear transmission of electric automobile and control method thereof |
| CN113048198A (en) * | 2019-12-10 | 2021-06-29 | 博格华纳公司 | Method for operating a gear shift system for a vehicle transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108980337B (en) | 2020-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208232814U (en) | A kind of vehicle dual power source double drive assembly | |
| CN108909426B (en) | Double-motor coupling planetary gear type two-gear variable speed drive axle | |
| US11162562B2 (en) | Transversely-placed vehicle driving assembly | |
| US11738629B2 (en) | Vehicle two-power-source dual driving assembly | |
| CN106321744A (en) | Dual-motor two-gear speed changing box for electric vehicle and gear-shifting control method thereof | |
| CN108980337A (en) | Two-speed automatic transmission and its control method | |
| CN110030332A (en) | Double overdrive clutch axle sleeve output adaptive automatic transmission | |
| CN109296721A (en) | The two-speed automatic transmission of electric vehicle | |
| CN204845500U (en) | Electric automobile multi -mode power control system | |
| CN109968972A (en) | The rear axle assy and process for gear of electronic integrated vehicle automatic shifting transmission | |
| CN207814352U (en) | Speed changer, power-driven system and vehicle | |
| CN107559389A (en) | Parallel Dual-motors Driving transmission assembly | |
| CN103307222A (en) | Mechanical automatic transmission of electric automobile provided with overrun clutch | |
| CN109990060A (en) | Speed changer, power-driven system and vehicle | |
| CN208364707U (en) | Three clutch hybrid gearboxes | |
| CN209240861U (en) | Power-driven system and vehicle | |
| CN109058397A (en) | The double clutch two-speed automatic transmission and its control method of tape synchronizer | |
| CN108016277A (en) | Power drive system and there is its vehicle | |
| JP5075177B2 (en) | Hydraulic traveling vehicle | |
| CN209483882U (en) | Power-driven system and vehicle | |
| CN218661381U (en) | Pure electric power assembly and vehicle | |
| CN213145242U (en) | Integrated two-gear speed change drive axle mechanism for electrified automobile | |
| CN212251024U (en) | Magnetic electromechanical automatic gear transmission | |
| CN212564309U (en) | One-way transmission shaft and one-way speed change mechanism | |
| CN211195862U (en) | Two grades of integrated bridge assemblies and car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210825 Address after: 100080 Room 501, 4th floor, building 3, courtyard 10, Ronghua South Road, Yizhuang Development Zone, Daxing District, Beijing Patentee after: Lvchuan (Beijing) Automotive Technology Co.,Ltd. Address before: 100080 F16 17, No. 1 Zhongguancun Avenue, Haidian District, Beijing. Patentee before: G-EDRIVE (BEIJING) TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |