CN110435419A - A kind of two grades of rear axle power systems of pure electric automobile - Google Patents
A kind of two grades of rear axle power systems of pure electric automobile Download PDFInfo
- Publication number
- CN110435419A CN110435419A CN201910697439.7A CN201910697439A CN110435419A CN 110435419 A CN110435419 A CN 110435419A CN 201910697439 A CN201910697439 A CN 201910697439A CN 110435419 A CN110435419 A CN 110435419A
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- Prior art keywords
- clutch
- gear
- shaft
- grades
- sun gear
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- 230000005540 biological transmission Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005183 dynamical system Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
Two grades of rear axle power systems of a kind of pure electric automobile disclosed by the invention, including motor, motor shaft, clutch, one-way clutch, inner shaft, outer shaft, planet row, rear sun gear, rear planetary gear and output shaft；Planet row includes: gear ring, preceding planetary gear, preceding sun gear, planet axis and planet carrier.By control one-way clutch outer race and inside race combine with disconnection, form two grades of powershifts.One grade of power path is provided by driving motor 1, successively passes through motor shaft, clutch, outer shaft, preceding sun gear, preceding planetary gear, planet axis and planet carrier, is exported from output shaft；Two grades of power will increase a paths by driving motor while provide, successively by motor shaft, clutch, inner shaft, rear sun gear, after planetary gear, planet axis and planet carrier, from output shaft export.This system simplifies clutch configuration, and control is simple, reduces costs, while realizing two grades of rear axle power functions of electric car.
Description
Technical field
The present invention relates to pure electric automobiles, and in particular to a kind of two grades of rear axle power systems of pure electric automobile.
Background technique
Two grades of rear axle power systems of pure electric automobile of the prior art, including driving motor, planet row, rear sun gear, after
Planetary gear, first clutch and second clutch and output shaft；Wherein, planet row includes preceding sun gear, gear ring, planet carrier and preceding
Planetary gear；Driving motor carries out power biography with preceding sun gear and rear sun gear respectively by first clutch and second clutch
It passs, realizes two grades of functions.Thus, two grades of power transmitting is realized using two clutches, structure is complicated for two clutches,
Occupied space is larger, and control system needed for the powershift to meet two gears is more complex；The combination of two clutches with
It disconnects in gear switch to reduce overload sliding wear, to the more demanding of control system, in order to meet shift performance requirement, two
A clutch often uses wet clutch, leads to that structure is complicated, higher cost.
Summary of the invention
The invention discloses a kind of two grades of rear axle power systems of pure electric automobile, simplify clutch configuration, and control is simple,
It reduces costs, while realizing two grades of rear axle power functions of electric car.
Two grades of rear axle power systems of a kind of pure electric automobile disclosed by the invention, including motor, motor shaft, clutch, list
To clutch, inner shaft, outer shaft, planet row, rear sun gear, rear planetary gear, output shaft；
The planet row includes: gear ring, preceding planetary gear, preceding sun gear, planet axis and planet carrier；The preceding sun gear and the rear sun
Wheel left and right is arranged in juxtaposition, and the preceding planetary gear mutually connects firmly with rear planetary gear and controls empty set side by side in the planet carrier of planet row
In planet axis, the preceding sun gear and rear sun gear are meshed with preceding planetary gear with rear planetary gear respectively, the preceding planetary gear with
Gear ring is meshed；
The motor power is exported by motor shaft；
The clutch is between driving motor and planet row, and the outer hub and motor shaft output of the clutch are connected, institute
The input terminal of the interior hub and outer shaft of stating clutch is connected；
In the outer shaft, inner shaft stretches out outer shaft both ends to the inner shaft empty set, and the outer hub of input terminal and clutch is connected, output end with
Rear sun gear is connected；The outer shaft output end and preceding sun gear are connected；
The one-way clutch placement is outside gear ring, and the outer race of one-way clutch is fixed, the inside race of one-way clutch 4
It is mutually connected firmly with gear ring；
The output end of the planet carrier of the planet row is mutually connected firmly with output shaft.
Further, the number of gear teeth of the gear ratio rear sun gear of the preceding sun gear 7 is more, the preceding planetary gear
The number of gear teeth of planetary gear is few after gear ratio.
Further, the clutch is dry clutch.
Further, the clutch is dry type electromagnetic clutch.
Further, the clutch is dry hydraulic clutch.
Advantageous effects of the present invention are as follows:
1) by the clutch and one-way clutch of setting, the clutch controlled using a need and the list for not needing control
General double clutch is replaced to clutch, realizes two grades of power transmitting；Its structure is simple, small in size, at low cost；
2) gear switch is realized by the combination and disconnection control of both clutch and one-way clutch, since one-way clutch has
Unidirectional delivery torque capability and avoid dual-clutch gear-shifting and overload sliding wear, and the control plan of one-way clutch and clutch occur
Slightly simpler, stability improves, and cost reduces.
3) number of gear teeth of the gear ratio rear sun gear 12 of sun gear 7 is more before, and the gear ratio of preceding planetary gear 8
The number of gear teeth of planetary gear 11 is few afterwards.Can be realized bigger transmission ratio, promote second speed so that the dynamical system have compared with
Big slewing range, and then the more efficient of system, economic performance are more excellent.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
Of the invention is described further with reference to the accompanying drawing.
Referring to Fig. 1, a kind of two grades of rear axle power systems of pure electric automobile, comprising: motor 1, motor shaft 2, clutch 3, list
To clutch 4, inner shaft 6, outer shaft 5, planet row, rear sun gear 12, rear planetary gear 11, output shaft 15.
Planet row includes: gear ring 10, preceding planetary gear 8, preceding sun gear 7, planet axis 13 and planet carrier 14.Preceding 7 He of sun gear
Rear sun gear 12 or so is arranged in juxtaposition, preceding planetary gear 8 connect firmly with rear 11 phase of planetary gear and left and right side by side empty set in planet row
In the planet axis 13 of planet carrier 14, preceding sun gear 7 and rear sun gear 12 are meshed with preceding planetary gear 8 with rear planetary gear 11 respectively,
Preceding planetary gear 8 is meshed with gear ring 10.The number of gear teeth of the gear ratio rear sun gear 12 of preceding sun gear 7 is more, described to move ahead
The number of gear teeth of planetary gear 11 is few after the gear ratio of star-wheel 8.
1 power of motor is exported by motor shaft 2.
For clutch 3 between driving motor 1 and planet row, the outer hub and 2 output end of motor shaft of the clutch 3 are solid
Even, the input terminal of the interior hub of the clutch 3 and outer shaft 5 is connected.
6 empty set of inner shaft is in outer shaft 5, and inner shaft 6 stretches out 5 both ends of outer shaft, and the outer hub of input terminal and clutch 3 is connected, defeated
Outlet and rear sun gear 12 are connected；5 output end of outer shaft and preceding sun gear 7 are connected.
One-way clutch 4 is arranged in outside gear ring 10, and the outer race of one-way clutch 4 is fixed, one-way clutch 4 it is interior
Seat ring is connected firmly with 10 phase of gear ring.The outer race of one-way clutch 4 is fixed on vehicle by vehicle frame 9.
The output end of the planet carrier 14 of planet row is connected firmly with 15 phase of output shaft.
Clutch 3 may be selected to be: dry clutch or dry type electromagnetic clutch or dry hydraulic clutch.Clutch 3 is
Dry clutch, the cost of dry clutch is low, control is simple, and its mechanically operated efficiency is also high.Clutch 3 is dry
Formula electromagnetic clutch, electromagnetic clutch can be connect with the electric-control system of automobile, and response is exceedingly fast.Clutch 3 be dry hydraulic from
The equal simple and stable of the control of clutch, electromagnetic clutch and hydraulic clutch, dry hydraulic clutch can be with the hydraulic systems of automobile
Connection, it can transmit big torque, and volume is also smaller.
The structure clutch controlled using a need and is not needed by the clutch and one-way clutch of setting
The one-way clutch of control replaces general double clutch, realizes two grades of power transmitting；Its structure is simple, small in size, cost
It is low；
Gear switch is realized by the combination and disconnection control of both clutch and one-way clutch, since one-way clutch has list
It avoids dual-clutch gear-shifting to transmitting torque capability and overload sliding wear, and the control strategy of one-way clutch and clutch occurs
Opposite double clutch is simpler, and stability improves, and cost reduces.
The number of gear teeth of the gear ratio rear sun gear 12 of preceding sun gear 7 is more, and after the gear ratio of preceding planetary gear 8
The number of gear teeth of planetary gear 11 is few.It can be realized bigger transmission ratio, promote second speed, so that the dynamical system is with larger
Slewing range, and then the more efficient of system, economic performance are more excellent.
Working principle；
One grade of operating mode: driving motor 1 works, and the external drum of clutch 3 and interior hub disconnect, the outer race of one-way clutch 4 and
Inside race combines；The power of driving motor 1 passes to rear sun gear 12 by inner shaft 6, and preceding planetary gear 8 and rear planetary gear 11 are together
On the one hand it around 13 rotation of planet wheel spindle of planet carrier 14, while revolving around the center line of rear sun gear 12, in one-way clutch 4
Outer race, inside race and gear ring 10 maintain static it is dynamic in the case where, the power of driving motor 1 successively pass through motor shaft 2, inner shaft 6,
Rear sun gear 12, rear planetary gear 11, preceding planetary gear 8, planet axis 13 and planet carrier 14, it is finally by output shaft 15 that power is defeated
Out.At this point, forming one grade of transmission ratio.One grade of power path: driving motor 1, motor shaft 2, inner shaft 6, rear sun gear 12, rear planet
Take turns 11, preceding planetary gear 8, planet axis 13, planet carrier 14, output shaft 15.
Two grades of operating modes: driving motor 1 works, and the external drum of clutch 3 and interior hub combine, the outer seat of one-way clutch 4
Circle and inside race disconnect；One paths of power pass to outer shaft 5, preceding sun gear 7, another paths warp of power via clutch 3
Rear sun gear 12 is passed to by inner shaft 6；Preceding sun gear 7 is passed to simultaneously with after from two power paths of driving motor 1
Sun gear 11, so that preceding sun gear 7, preceding planetary gear 8, planet axis 13, planet carrier 14 and rear sun gear 12, rear planetary gear 11 are fixed
It rotates around the center line of preceding sun gear 7, outputs power finally by output shaft 15 together.At this point, forming two grades of transmission ratios.
Two grades of power paths are as follows:
First power is provided by driving motor 1, successively passes through motor shaft 2, clutch 3, outer shaft 5, preceding sun gear 7, preceding planet
Wheel 8, planet axis 13 and planet carrier 14 are exported from output shaft 15；
Article 2 power is provided simultaneously by driving motor 1, successively by motor shaft 2, clutch 3, inner shaft 6, rear sun gear 12, after
Planetary gear 11, planet axis 13 and planet carrier 14 are exported from output shaft 15.
Gear switch: for automobile in one grade of operation, speed changer automatic control unit knows vehicle row according to related sensor
State is sailed, and then is judged, just enters two grades if you need to accelerate.Specifically: vehicle reaches in one grade of operation need to change such as two grades
When shifting points, clutch 3 is gradually combined, and planet row and rear sun gear 12, rear planetary gear 11 rotate together, one-way clutch 4
Inside race is detached from the locking of outer race and rotates, and inside race and the outer race of one-way clutch 4 are gradually turned off, while clutch 3
Further combined with until being completely combined, entire shift terminates, and vehicle changes to two grades.Vehicle changes to one grade of process just from two grades
With two grades of process contrary of change, specifically: vehicle when two grades of operations need to change one grade, the clutch 3 in bonding state by
It gradually disconnects, while the one-way clutch 4 being in an off state gradually combines, until clutch 3 is fully disconnected, one-way clutch 4
It is completely combined, entire shift terminates, and vehicle changes to one grade.
Automobile encounters special road section in one grade of driving process, and the excessively high appearance of vehicle wheel rotational speed is counter to drag, and can reduce drive at this time
Dynamic 1 revolving speed of motor, while the combination for controlling clutch 3 is switched to two grades to realize that dynamical stability is transmitted.
Claims (5)
1. a kind of two grades of rear axle power systems of pure electric automobile, it is characterised in that: including motor (1), motor shaft (2), clutch
(3), one-way clutch (4), inner shaft (6), outer shaft (5), planet row, rear sun gear (12), rear planetary gear (11), output shaft
(15)；
The planet row includes: gear ring (10), preceding planetary gear (8), preceding sun gear (7), planet axis (13) and planet carrier (14)；Institute
State preceding sun gear (7) and rear sun gear (12) left and right be arranged in juxtaposition, the preceding planetary gear (8) mutually connected firmly with rear planetary gear (11) and
Empty set is in the planet axis (13) of the planet carrier (14) of planet row side by side for left and right, the preceding sun gear 7 and rear sun gear (12)
It is meshed respectively with preceding planetary gear (8) with rear planetary gear (11), the preceding planetary gear (8) is meshed with gear ring (10)；
Motor (1) power is exported by motor shaft (2)；
The clutch (3) is located between driving motor (1) and planet row, and the outer hub and motor shaft (2) of the clutch (3) are defeated
Outlet is connected, and the interior hub of the clutch (3) and the input terminal of outer shaft (5) are connected；
For inner shaft (6) empty set in outer shaft (5), inner shaft (6) stretches out outer shaft (5) both ends, and input terminal is outer with clutch (3)
Hub is connected, and output end and rear sun gear (12) are connected；Outer shaft (5) output end and preceding sun gear (7) are connected；
It is external that the one-way clutch (4) is arranged in gear ring (10), and the outer race of one-way clutch (4) is fixed, one-way clutch
The inside race of device (4) is mutually connected firmly with gear ring (10)；
The output end of the planet carrier (14) of the planet row is mutually connected firmly with output shaft (15).
2. two grades of rear axle power systems of a kind of pure electric automobile according to claim 1, it is characterised in that: the preceding sun
The number of gear teeth for taking turns the gear ratio rear sun gear (12) of (7) is more, planetary gear after the gear ratio of the preceding planetary gear (8)
(11) number of gear teeth is few.
3. two grades of rear axle power systems of a kind of pure electric automobile according to claim 2, it is characterised in that: the clutch
It (3) is dry clutch.
4. two grades of rear axle power systems of a kind of pure electric automobile according to claim 3, it is characterised in that: the clutch
Device (3) is dry type electromagnetic clutch.
5. two grades of rear axle power systems of a kind of pure electric automobile according to claim 3, it is characterised in that: the clutch
It (3) is dry hydraulic clutch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910697439.7A CN110435419A (en) | 2019-07-30 | 2019-07-30 | A kind of two grades of rear axle power systems of pure electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910697439.7A CN110435419A (en) | 2019-07-30 | 2019-07-30 | A kind of two grades of rear axle power systems of pure electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110435419A true CN110435419A (en) | 2019-11-12 |
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ID=68432404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910697439.7A Pending CN110435419A (en) | 2019-07-30 | 2019-07-30 | A kind of two grades of rear axle power systems of pure electric automobile |
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| CN (1) | CN110435419A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090390A (en) * | 2014-05-13 | 2015-11-25 | 通用汽车环球科技运作有限责任公司 | Vehicle transmission with common carrier planetary gear set |
| CN105128700A (en) * | 2015-09-10 | 2015-12-09 | 福建工程学院 | Double-power system of electric vehicle and control method |
| CN105972165A (en) * | 2016-07-29 | 2016-09-28 | 重庆青山工业有限责任公司 | Double-clutch planet row type blade electric vehicle transmission |
| CN106347098A (en) * | 2016-12-01 | 2017-01-25 | 重庆青山工业有限责任公司 | Power system of hybrid automobile |
| CN106882039A (en) * | 2017-04-14 | 2017-06-23 | 重庆青山工业有限责任公司 | A kind of two keep off pure electric vehicle power system |
| CN108177512A (en) * | 2017-03-29 | 2018-06-19 | 上海迪鲲机电科技有限公司 | Two grades of speed change electricity of integrated form drive assembly system and application process |
| CN211617427U (en) * | 2019-07-30 | 2020-10-02 | 重庆青山工业有限责任公司 | Two-gear rear axle power system of pure electric vehicle |
-
2019
- 2019-07-30 CN CN201910697439.7A patent/CN110435419A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090390A (en) * | 2014-05-13 | 2015-11-25 | 通用汽车环球科技运作有限责任公司 | Vehicle transmission with common carrier planetary gear set |
| CN105128700A (en) * | 2015-09-10 | 2015-12-09 | 福建工程学院 | Double-power system of electric vehicle and control method |
| CN105972165A (en) * | 2016-07-29 | 2016-09-28 | 重庆青山工业有限责任公司 | Double-clutch planet row type blade electric vehicle transmission |
| CN106347098A (en) * | 2016-12-01 | 2017-01-25 | 重庆青山工业有限责任公司 | Power system of hybrid automobile |
| CN108177512A (en) * | 2017-03-29 | 2018-06-19 | 上海迪鲲机电科技有限公司 | Two grades of speed change electricity of integrated form drive assembly system and application process |
| CN106882039A (en) * | 2017-04-14 | 2017-06-23 | 重庆青山工业有限责任公司 | A kind of two keep off pure electric vehicle power system |
| CN211617427U (en) * | 2019-07-30 | 2020-10-02 | 重庆青山工业有限责任公司 | Two-gear rear axle power system of pure electric vehicle |
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