CN109050228A - Pure electric automobile and power assembly system - Google Patents
Pure electric automobile and power assembly system Download PDFInfo
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- CN109050228A CN109050228A CN201811120737.1A CN201811120737A CN109050228A CN 109050228 A CN109050228 A CN 109050228A CN 201811120737 A CN201811120737 A CN 201811120737A CN 109050228 A CN109050228 A CN 109050228A
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- gear
- motor
- assembly system
- power assembly
- shell
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- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 17
- 238000000034 method Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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Classifications
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- 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
- B60K1/00—Arrangement or mounting of electrical propulsion units
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- 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
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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- 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
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
Abstract
The present invention provides a kind of pure electric automobile and power assembly system, including shell, motor, the first planet row, gear and control gearshift；First planet row includes three the first rotating elements, one of them first rotating element in three the first rotating elements is connected by control gearshift with the output shaft of shell, motor, control the work of gearshift selectivity, to realize braking or rotation, the other two in three the first rotating elements is connected with the input terminal of the output shaft of motor, gear one-to-one correspondence respectively；The output end of gear is for being sequentially connected in the wheel end of automobile.Two grades of rank ratios of its transmission mechanism so as to reduce the output torque of the torque demand of motor and then increase automotive wheels end, and then guarantee the ride comfort of vehicle, and its compact overall structure, integrated level is high, and control is simple, and cost is relatively low less than 2.
Description
Technical field
The present invention relates to automobile technical field more particularly to a kind of pure electric automobiles and power assembly system.
Background technique
With the enhancing of environment environmental consciousness, the development and utilization of new energy is more and more important and universal, garage
Industry needs the epoch of complying with to be designed and develop new energy pure electric automobile, therewith as a ring important in environmental protection cause
Bring is exactly the variation and update of the transmission system of new energy pure electric automobile.The power assembly system of traditional pure electric automobile
The transmission work of system realizes that use is this generally by the Parallel offset formula second level involute helical wheel construction of fixed speed ratio
If desired structure reaches biggish wheel end torque output, the make use of momentum necessary torque output for improving motor or increase transmission ratio, but
It is to improve the torque output meeting of motor so that motor volume increases, to increase cost；And increase transmission ratio then can be total to power
General layout requirement at the drive mechanism of system is higher, and makes power assembly system difficult using the drive mechanism of fixed speed ratio
To take into account acceleration and economy, using effect is poor.
Two grades of current drive mechanism schemes include fixed shaft type and planetary gear type, since power assembly system is to speed ratio
Demand it is larger, so the general layout of fixed shaft type is difficult to meet the requirements；And two grades of ranks of single planetary bevel gear planetary gear mechanism
Than being greater than 2, to be difficult to ensure the ride comfort of vehicle.
Summary of the invention
Based on above-mentioned the deficiencies in the prior art, the purpose of the present invention is to provide a kind of pure electric automobile and power assembly systems
System, two grades of rank ratios of the transmission mechanism of the power assembly system are less than 2, so as to reduce the torque demand of motor and then increase
The output torque at automotive wheels end, and then guarantee the ride comfort of vehicle, and its compact overall structure, integrated level is high, and control is simple, at
This is lower.
Based on this, the technical solution of the present invention is as follows: a kind of power assembly system comprising shell, motor, the first planet
Row, gear and control gearshift；
The control gearshift is connected with the output shaft of the motor, and the control gearshift is connected to institute
Shell is stated, first planet row is connected between the control gearshift and the gear；
First planet row includes three the first rotating elements, and three first rotating elements are respectively first sun
Wheel, first planet carrier and the first gear ring；
One of them first rotating element in three first rotating elements passes through the control gearshift and institute
State shell, the output shaft of the motor is connected, the work of the control gearshift selectivity, to realize and the shell
The output shaft braking or rotation of the first rotating element that are connected of body, the motor, in three first rotating elements
Other two respectively with the input terminal of the output shaft of the motor, the gear one-to-one correspondence be connected；
The output end of the gear is for being sequentially connected in the wheel end of automobile.
Optionally, the control gearshift includes brake and clutch, the brake and the clutch linkage
Connection, the clutch are connected with the output shaft of the motor, and the brake is connected with the shell, the braking
Device and the clutch are connected with one of them first rotating element of three first rotating elements respectively, when the system
When dynamic device combines, the clutch cuts off the motor output shaft and be connected with this with the brake and the clutch
The connection of first rotating element, when the releasing of brake, the clutch restores the motor output shaft and is somebody's turn to do and institute
State the connection for the first rotating element that brake is connected with the clutch.
Optionally, first sun gear is assemblied on the output shaft of the motor, first gear ring and the change
The input terminal of fast mechanism is connected, and the first planet carrier is connected with the brake, the clutch.
Optionally, the gear includes the second planet row, and second planet row includes a fixing element and two
A second rotating element, the fixing element are fixedly connected with the shell, described two second rotating elements respectively with it is described
First gear ring, automobile wheel end correspond be connected.
Optionally, the fixing element be the second gear ring, described two second rotating elements be respectively the second sun gear and
Second planet carrier, second sun gear are connected with first gear ring, and second planet carrier is connected with the wheel end of automobile
It connects.
Optionally, the gear includes first gear device, shaft and second gear device, the first gear dress
It sets and is connected with the second gear device by the shaft, the first gear device is connected with first gear ring,
The second gear device is connected to the wheel end of automobile.
Optionally, the power assembly system further includes differential mechanism and electric machine controller, the output end of the gear
The wheel end of automobile, the electric machine controller and the electronic mechatronics are connected to by the differential mechanism.
Optionally, the shell of the electric machine controller, the motor shell, it is described control gearshift shell and
The shell of the differential mechanism is integrated into the shell an of entirety.
Optionally, optionally, the power assembly system includes two kinds of working conditions, under one grade of control, the control
Gearshift make in three the first rotating elements of first planet row one of them be fixedly connected with the casing realization system
It is dynamic, power from the motor output and pass through first planet row three the first rotating elements in other two to institute
Gear is stated to be transmitted；Under second gear control, the control gearshift makes three first of first planet row
One of them in rotating element is connected to be rotated by the driving of the motor with the output shaft of the motor, described
The output power of motor is synchronously transmitted to first rotating element and another first rotating element, remaining first rotation
Element is used for the power output to gear；Under two grades of controls of the control gearshift, first planet row
The rank ratio to work under above-mentioned two gear is less than 2.
Identical in order to solve the problems, such as, the present invention also provides a kind of pure electric automobiles comprising any of the above-described scheme
Power assembly system.
The implementation of the embodiments of the present invention has the following beneficial effects:
Power assembly system of the invention realizes two grades of gear using planet row structure, by control
The alternative work of gearshift, so that power assembly system obtains two kinds of working conditions, under one grade of control, control shift
Device make in three the first rotating elements of the first planet row one of them be fixedly connected with the casing, thus first rotation
Element is braked, then power by motor output and passes through the other two in three the first rotating elements of the first planet row
It is transmitted to gear, to realize the purpose of speed change；Under second gear control, control gearshift makes the first planet row
One of them in three the first rotating elements is connected with the output shaft of motor, so that first rotating element is by motor
Driving and normally rotate, then the output power of motor can be synchronously transmitted to first rotating element and another first rotation
Turn element, remaining first rotating element is used for the purpose by the power output to gear, with realization etc. than rotation.It is controlling
Under two grades of gearshift processed controls, which comes the rank ratio to work under two gears less than 2, can be sufficient
Guarantee the ride comfort of vehicle driving, and two grades of speed changes for controlling gearshift can also reduce the demand of Motor torque, increases vapour
The output torque of road wheel end has advanced optimized the working condition of motor, has made so that the structure arrangement of whole device is more compact
The efficiency for obtaining entire power assembly system is improved.In addition, this power assembly system is using double planet wheel rows of mixing structure, power
The stationarity of transmitting is higher, so that whole system is more easily coaxially arranged, to reduce the requirement to installation space, and planet row knot
Structure can make system obtain bigger transmission ratio according to demand, to reduce the requirement to the output torque of motor, avoid
Occur that production cost can be effectively reduced since the excessive volume for causing total system of the diameter of motor is excessive.
Further, the power assembly system directly by motor, control gearshift, the first planet row, gear,
Differential mechanism and electric machine controller are integrated, and are controlled by electric machine controller power assembly system, so that total system
Integrated level it is very high, Each part directly connect it is compact, using the shell for being processed and formed at one time integrated each section, letter
Change mutual assembly and positioning relation, avoiding the power assembly system from causing in the process of running because of installation error can
It is low by property, improve the reliability of power assembly system work.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of power assembly system described in the embodiment of the present invention one；
Fig. 2 is the power transmission line that power assembly system described in the embodiment of the present invention one works under one grade of state
Schematic diagram；
Fig. 3 is the power transmission line that power assembly system described in the embodiment of the present invention one works under two grades of states
Schematic diagram；
Fig. 4 is the structural schematic diagram of power assembly system described in the embodiment of the present invention two.
Description of symbols:
1, shell, 2, motor, 21, the output shaft of motor, the 3, first planet row, the 31, first sun gear, 32, first
Planet carrier, the 33, first gear ring, the 34, first planetary gear, 4, gear, the 41, second planet row, the 411, second sun gear, 412,
Second planet carrier, the 413, second gear ring, the 414, second planetary gear, 42, first gear device, 43, shaft, 44, second gear dress
It sets, 5, control gearshift, 51, clutch, 52, brake, 6, the wheel end of automobile, 7, differential mechanism, 8, electric machine controller.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, the orientation or position of the instructions such as term " on ", "lower", "left", "right"
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplification of the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is interpreted as limitation of the present invention.
Embodiment one
Referring to Fig. 1 to Fig. 3, the power assembly system of this preferred embodiment include shell 1, motor 2, the first planet row 3,
Gear 4 and control gearshift 5；Control gearshift 5 is connected with the output shaft 21 of motor, and controls gearshift
5 are connected to shell 1, and the first planet row 3 is connected between control gearshift 5 and gear 4；First planet row 3 includes three
A first rotating element, three the first rotating elements are respectively the first sun gear 31, first planet carrier 32 and the first gear ring 33；Institute
One of them first rotating element stated in three the first rotating elements passes through the control gearshift 5 and the shell 1, institute
The output shaft 21 for stating motor is connected, the work of control gearshift 5 selectivity, to realize and the shell 1, described
The braking or rotation for the first rotating element that the output shaft 21 of motor is connected, remaining in three first rotating elements
Two are connected with the input terminal of the output shaft 21 of the motor, the gear 4 one-to-one correspondence respectively；Gear 4
Output end for being sequentially connected in the wheel end 6 of automobile.
Based on the above structure, which is different from common pure electric vehicle gearbox, by using planet row two
Shelves gear 4 replaces the Parallel offset formula second level involute helical gear of fixed speed ratio to be driven, and carries out two by control gearshift 5
The alternate control of shelves, the power changed in the first planet row 3 transmit situation, when control gearshift 5 carries out one grade of control work
When, control gearshift 5 is fixedly connected with the first coupled rotating element with shell 1, to inhibit first rotation
The rotation of element at this point, motor 2 is spread out of its power by the output shaft 21 of motor, then is transmitted to the output with motor
Power is transferred to gear 4 finally by remaining first rotating element by the first rotating element that axis 21 is connected,
The wheel end 6 of automobile is transferred to after progress speed change in gear 4.In the process, the first planet row 3 carries out speed change transmitting,
If the characteristic parameter of the first planet row 3 is K, under one grade of control of control gearshift 5, the transmission speed of the first planet row 3
Than for K.When controlling the progress second gear control work of gearshift 5, control gearshift 5 rotates coupled first
Element is connected with the output shaft 21 of motor, so that first rotating element can carry out under the driving of motor 2
Normal rotation, at this point, motor 2 is spread out of its power by the output shaft 21 of motor, and will by the output shaft of motor 21
Power synchronous passes to the two of them of three the first rotating elements, then is passed power by remaining first rotating element
It is handed to gear 4, the wheel end 6 of automobile is transferred to after gear 4 carries out speed change.In the process, the first planet row 3 is
It carries out etc. than rotation, if the characteristic parameter of the first planet row 3 is K, under the second gear control of control gearshift 5, the first row
The transmission speed ratio of star row 3 is 1.Rank ratio of first planet row 3 under two gears is K as a result, as K≤2, two shelves
The rank ratio of position is less than or equal to 2, so that two grades of control gears 4 of first planet row 3 enable to the choosing of the first planet row 3
Select that space is bigger, and the wheel end 6 of automobile can also obtain biggish output torque；Further, entire power assembly system energy
Enough demands reduced to the output torque of motor 2, avoid the occurrence of that 2 overall dimensions of motor are excessive and the integral power of assembly is total
At the excessive phenomenon of the volume of system, requirement of the power assembly system to general layout and installation space is reduced.It is entire dynamic
The structure of power assembly system designs very simple, reliable for operation, easy to control and lower production costs.
Wherein, control gearshift 5 includes brake 52 and clutch 51, and brake 52 is connected with clutch 51,
Clutch 51 is connected with the output shaft 21 of motor, and brake 52 is connected with shell 1, and brake 52 and clutch 51 are distinguished
It is connected with one of them first rotating element of three the first rotating elements, when brake 52 combines, clutch 51 is cut off
The connection of motor 2 output shaft and first rotating element, when brake 52 unclamps, clutch 51 restores the motor 2
The connection of output shaft and first rotating element.The control work of gearshift 5 is controlled as a result, by brake 52 and clutch 51
Alternation realize that the combination of brake 52 makes and control the first rotating element and shell 1 that gearshift 5 is connected
It is fixedly connected and brakes, clutch 51 disengages the connection between first rotating element and the output shaft 21 of motor, pine at this time
Open brake 52, then clutch 51 combines so that defeated with the first rotating element for being connected of control gearshift 5 and motor
Shaft 21 is connected, and brake 52 disengages being fixedly connected between first rotating element and shell 1 at this time.Control gearshift
5 determined by the control of the working condition to the first coupled rotating element the first planet row 3 realize speed change or
Realization etc. is than rotation, to realize two grades of controls, structure is very simple.First planet row 3 further includes several first planetary gears
34, the first sun gear 31 and the first gear ring 33 are meshed with the first planetary gear 34 respectively, first planet carrier 32 and each first planet
Wheel 34 is connected, and in the present embodiment, the quantity of the first planetary gear 34 is preferably two, and thus, it is possible to guarantee the first sun gear 31
With rotating in same direction for the first gear ring 33, so that controlling gearshift 5 during alternation, power transmitting can be more steady
Reliably.
In the preferred embodiment, the first sun gear 31 is assemblied on the output shaft 21 of motor, the first gear ring 33 and change
The input terminal of fast mechanism 4 is connected, and first planet carrier 32 is connected with brake 52, clutch 51, i.e., with the first sun gear 31
As the input terminal of the first planet row 3, output end of first gear ring 33 as the first planet row 3, and the work of first planet carrier 32
Make then to depend on control gearshift 5, when brake 52 combines, first planet carrier 32 is fixed, and 3 speed change of the first planet row passes
It passs, when brake 52 unclamps, and clutch 51 combines, first planet carrier 32 is coupled synchronous rotation, the first planet row 3 with sun gear
Deng than rotation transmitting.It should be noted that company of three the first rotating elements of the first planet row 3 in the power assembly system
It connects the method for salary distribution not limited by the present embodiment, when can be suitable to select the first sun gear 31, first according to actual needs
Planet carrier 32, the output shaft 21 of the first gear ring 33 and motor, control gearshift 5, gear 4 input terminal between phase
Mutually distribution connection relationship.
In addition, gear 4 includes the second planet row 41, the second planet row 41 includes a fixing element and two second
Rotating element, fixing element are fixedly connected with shell 1, two the second rotating elements wheel end 6 with the first gear ring 33, automobile respectively
One-to-one correspondence is connected, and fixing element is the second gear ring 413, and two the second rotating elements are respectively the second sun gear 411 and
Two planet carriers 412, the second planet row 41 further include several second planetary gears 414, the second sun gear 411 and the second gear ring 413
It is meshed respectively with the second planetary gear 414, the second planet carrier 412 is connected with each second planetary gear 414, and the second gear ring 413 is solid
Surely it is connected on the shell 1 of the power assembly system, power is passed to the second planet by the first gear ring 33 by the first planet row 3
The second sun gear 411 of row 41, and the second planet carrier 412 is passed to by the second sun gear 411, then by the second planet carrier 412
Power is reached to the wheel end 6 of automobile.Second gear ring 413 is fixed, and power is inputted by the second sun gear 411, the second planet carrier 412
Output, the second planet carrier 412 are to rotate in same direction with the second sun gear 411, and second planet row 41 is relative to traditional dead axle tooth
Taking turns transmission system has higher transmission ratio, whole system is realized in the structure arrangement of double planet wheel rows of mixing further
Speed changing effect, and the effect is transferred to the wheel end 65 of automobile, the output torque at the effective wheel end 65 for increasing automobile.Each
Two planetary gears 414 can passing movement and power, each second planetary gear 414 be on business changed the line of production life simultaneously in the second sun gear 411
Centrifugal intertia force and flank profil between the radial component of reaction force mutually balance so that its main shaft stress is smaller, to improve biography
Power is passed, and the second planetary gear 414 is inside engaged gear, adequately utilizes the space in transmission process, entire second planet
The input shaft and output shaft of row 41 is on same straight line, and compared to fixed axis gear, the setting of the second planet row 41 is then more convenient for
It realizes the coaxially arranged of entire power drive system, the structure of whole system is facilitated to arrange, so that integral power assembly system
Small volume reduces its requirement in arrangement to space, installs and very easy to use.Further, the second planet row 41
Fixing element be also possible to the second planet carrier 412, then two the second rotating elements are respectively the second gear ring 413 and second at this time
Sun gear 411.
Further, which further includes differential mechanism 7 and electric machine controller 8, the output of the second planet row 41
End is connected to the wheel end 6 of automobile by differential mechanism 7, and differential mechanism 7 enables to the driving wheel of arranged on left and right sides to realize with different turns
Speed is rotated, and guarantees the reliability of entire power assembly system work；Electric machine controller 8 then can change driving by control
Electric current come realize motor 2 speed adjustment, in the power assembly system of pure electric automobile, electric machine controller 8 can be by vapour
Stored electric energy is converted into drive motor 2 and works required electric energy in the power battery of vehicle, thus to control pure electric vehicle
The driving status of automobile.The shell 1 of electric machine controller 8, motor 2 shell 1, control the shell 1 and differential mechanism of gearshift 5
7 shell 1 is integrated into an entirety, and as the shell of this power assembly system 1, thus, it is possible to reduce motor 2, motor control
Device 8 processed, control gearshift 5 and differential mechanism 7 during the connection process used by transitional part, effectively simplify each component it
Between the positioning relation that assembles, directly adopt and be processed and formed at one time, avoid the power assembly system during the work time due to dress
The error matched and there is noise greatly and the low problem of reliability, improve the integrated level of whole system, guarantee work to a certain extent
Reliability, and extend the service life of the power assembly system.
Identical in order to solve the problems, such as, it to include above-mentioned power assembly that the present invention also provides a kind of pure electric automobiles
System.
Embodiment two
Referring to fig. 4, the topology layout of the power assembly system of this preferred embodiment and being substantially the same in embodiment one, area
It is not only that, what gear 4 included is first gear device 42, shaft 43 and second gear device 44, first gear device
42 are connected with second gear device 44 by shaft 43, and first gear device 42 is connected with the first gear ring 33, second gear
Device 44 is connected to the wheel end 6 of automobile, and first gear device 42 includes the first driving gear and the first driven gear, the second tooth
Wheel apparatus 44 includes the second driving gear and the second driven gear, and the power of the first planet row 3 is spread out of by the first gear ring 33,
First gear ring 33 is connected with the first driving gear, drives the rotation of the first driving gear, the first driving gear and the first driven tooth
Wheel intermeshing, power are spread out of by the first driven gear, and the first driven gear is connected by shaft 43 with the second driving gear,
Second driving gear and the second driven gear are intermeshed, and are thus spread out of power to differential mechanism 7 from the second driven gear, and lead to
The wheel end 6 that differential mechanism 7 is transferred to automobile is crossed, whole process passes through the fixing axle of first gear device 42 and second gear device 44
Formula is driven, although be not it is coaxially arranged, the purpose of speed change can be also played, and have certain transmission ratio, with
One planet row 3 cooperates with each other, and entire power assembly system is enabled to obtain biggish transmission ratio, and then the wheel end of automobile
6 can reach biggish torque output.Motor 2, the first planet row 3, motor control in addition to above-mentioned difference, in the present embodiment
The structure of device 8 and the mutual connection relationship and each section of differential mechanism 7 with it is completely the same in embodiment one, accordingly
Principle is also consistent with working condition, and details are not described herein.
Power assembly system of the invention realizes two grades of gear 4 using planet row structure, by control
The alternative work of gearshift 5, so that power assembly system obtains two kinds of working conditions, under one grade of control, control is changed
Blocking means 5 make in three the first rotating elements of the first planet row 3 one of them be fixedly connected with shell 1, thus this
One rotating element is braked, then power is exported by motor 2 and passed through in three the first rotating elements of the first planet row 3
Other two is transmitted to gear 4, to realize the purpose of speed change；Under second gear control, control gearshift 5 makes the
One of them in three the first rotating elements of one planet row 3 is connected with the output shaft 21 of motor, thus first rotation
Turn element normally to be rotated by the driving of motor 2, then the output power of motor 2 can be synchronously transmitted to the first rotation member
Part and another first rotating element, remaining first rotating element is used for the power output to gear 4, with realization etc.
Than the purpose of rotation.Under two grades of controls of control gearshift 5, what which worked under two gears
Rank ratio can adequately guarantee the ride comfort of vehicle driving less than 2, and two grades of speed changes for controlling gearshift 5 can also reduce
The demand of Motor torque increases the output torque at automotive wheels end, so that the structure arrangement of whole device is more compact, it is further excellent
The working condition of motor is changed, so that the efficiency of entire power assembly system is improved.In addition, this power assembly system uses
Be double planet wheel rows of mixing structure, the stationarity of power transmitting is higher, so that whole system is more easily coaxially arranged, to reduce to installation
The requirement in space, and planet row structure can make system obtain bigger transmission ratio according to demand, to reduce to motor 2
Output torque requirement, avoid the occurrence of since the excessive volume for causing total system of the diameter of motor 2 is excessive, can be effective
Reduce production cost.
Further, the power assembly system is directly by motor 2, control gearshift 5, the first planet row 3, variable-speed motor
Structure 4, differential mechanism 7 and electric machine controller 8 are integrated, and are controlled by electric machine controller 8 power assembly system, so that whole
The integrated level of system system is very high, Each part directly connect it is compact, using being processed and formed at one time integrated each section
Shell 1 simplifies mutual assembly and positioning relation, avoids the power assembly system in the process of running because of installation error
And cause reliability low, improve the reliability of power assembly system work.
It should be understood that various information are described in the present invention using term " first ", " second " etc., but these information
It should not necessarily be limited by these terms, these terms are only used to for same type of information being distinguished from each other out.For example, not departing from the present invention
In the case where range, " first " information can also be referred to as " second " information, and similar, " second " information can also be referred to as
" first " information.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principle of the present invention, several improvement and deformations can also be made, these improvement and deformations are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of power assembly system, which is characterized in that changed including shell, motor, the first planet row, gear and control
Blocking means；
The control gearshift is connected with the output shaft of the motor, and the control gearshift is connected to the shell
Body, first planet row are connected between the control gearshift and the gear；
First planet row include three the first rotating elements, three first rotating elements be respectively the first sun gear,
First planet carrier and the first gear ring；
One of them first rotating element in three first rotating elements passes through the control gearshift and the shell
Body, the motor output shaft be connected, it is described control gearshift selectivity work, with realize and the shell, institute
The braking or rotation of the first rotating element that the output shaft of motor is connected are stated, remaining in three first rotating elements
Two are connected with the input terminal of the output shaft of the motor, gear one-to-one correspondence respectively；
The output end of the gear is for being sequentially connected in the wheel end of automobile.
2. power assembly system as described in claim 1, which is characterized in that the control gearshift include brake and from
Clutch, the brake are connect with the clutch linkage, and the clutch is connected with the output shaft of the motor, described
Brake is connected with the shell, the brake and the clutch respectively with three first rotating elements wherein
One the first rotating element is connected, and when the brake combines, the clutch cuts off the motor output shaft and is somebody's turn to do
The connection for the first rotating element being connected with the brake and the clutch, when the releasing of brake, it is described from
Clutch restores the company of the motor output shaft with the first rotating element that should be connected with the brake and the clutch
It connects.
3. power assembly system as claimed in claim 2, which is characterized in that first sun gear is assemblied in the motor
Output shaft on, first gear ring is connected with the input terminal of the gear, the first planet carrier and the braking
Device, the clutch are connected.
4. power assembly system as claimed in claim 3, which is characterized in that the gear includes the second planet row, institute
Stating the second planet row includes a fixing element and two the second rotating elements, and the fixing element and the shell, which are fixed, to be connected
It connects, described two second rotating elements are corresponded with the wheel end of first gear ring, automobile respectively to be connected.
5. power assembly system as claimed in claim 4, which is characterized in that the fixing element be the second gear ring, described two
A second rotating element is respectively the second sun gear and the second planet carrier, and second sun gear is connected with first gear ring
It connects, second planet carrier is connected with the wheel end of automobile.
6. power assembly system as claimed in claim 3, which is characterized in that the gear include first gear device,
Shaft and second gear device, the first gear device is connected with the second gear device by the shaft, described
First gear device is connected with first gear ring, and the second gear device is connected to the wheel end of automobile.
7. such as power assembly system as claimed in any one of claims 1 to 6, which is characterized in that further include differential mechanism and motor control
Device processed, the output end of the gear are connected to the wheel end of automobile by the differential mechanism, the electric machine controller with it is described
Electronic mechatronics.
8. power assembly system as claimed in claim 7, which is characterized in that the shell of the electric machine controller, described electronic
The shell of the shell of machine, the shell of the control gearshift and the differential mechanism is integrated into the shell an of entirety.
9. power assembly system as described in claim 1, which is characterized in that the power assembly system includes two kinds of work shapes
State, under one grade of control, the control gearshift makes in three the first rotating elements of first planet row wherein
One is fixedly connected with the casing realization braking, and power is by the motor output and by three first of first planet row
Other two in rotating element is transmitted to the gear；Under second gear control, the control gearshift makes
One of them in three the first rotating elements of first planet row be connected with the output shaft of the motor to by
The driving of the motor rotates, the output power of the motor be synchronously transmitted to first rotating element and another the
One rotating element, remaining first rotating element are used for the power output to gear；In the control gearshift
Under two grades of controls, first planet comes the rank ratio to work under above-mentioned two gear less than 2.
10. a kind of pure electric automobile, which is characterized in that including power assembly system as described in any one of claim 1 to 9.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018109715633 | 2018-08-23 | ||
| CN201810971563 | 2018-08-23 |
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| CN109050228A true CN109050228A (en) | 2018-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811120737.1A Pending CN109050228A (en) | 2018-08-23 | 2018-09-25 | Pure electric automobile and power assembly system |
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| Country | Link |
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| CN (1) | CN109050228A (en) |
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