CN107091305A - Planetary transmission for electric automobile - Google Patents

Planetary transmission for electric automobile Download PDF

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Publication number
CN107091305A
CN107091305A CN201710480370.3A CN201710480370A CN107091305A CN 107091305 A CN107091305 A CN 107091305A CN 201710480370 A CN201710480370 A CN 201710480370A CN 107091305 A CN107091305 A CN 107091305A
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CN
China
Prior art keywords
gear
motor
output shaft
planetary
engaged
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
Application number
CN201710480370.3A
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Chinese (zh)
Other versions
CN107091305B (en
Inventor
王勇
王敬
姚晶晶
李蕊
王腾
周均
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Chongqing College of Electronic Engineering
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Chongqing College of Electronic Engineering
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Publication of CN107091305A publication Critical patent/CN107091305A/en
Application granted granted Critical
Publication of CN107091305B publication Critical patent/CN107091305B/en
Active legal-status Critical Current
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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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/46—Gearings having only two central gears, connected by orbital gears
    • F16H3/48—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears
    • F16H3/52—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears
    • F16H3/54—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears one of the central gears being internally toothed and the other externally toothed
    • 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
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/46—Gearings having only two central gears, connected by orbital gears
    • F16H3/58—Gearings having only two central gears, connected by orbital gears with sets of orbital gears, each consisting of two or more intermeshing orbital gears
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0436—Pumps
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0441—Arrangements of pumps
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion
    • F16H57/0484—Gearings with gears having orbital motion with variable gear ratio or for reversing rotary motion
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
    • 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
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing
    • 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
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H2057/087—Arrangement and support of friction devices in planetary gearings, e.g. support of clutch drums, stacked arrangements of friction devices
    • 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
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
    • F16H2200/2038—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with three engaging means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Details Of Gearings (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The invention discloses a kind of planetary transmission for electric automobile, including the first motor, the second motor and planetary gears, in addition to two brakes for being respectively used to brake the first motor and the second motor output shaft；The planetary gears includes the sun gear being solidly set on the first motor output shaft, the planetary gear engaged with sun gear, the planet carrier with power output shaft and the external toothing engaged with planetary gear, and the external toothing is provided with external tooth；The biased gear of synchronous rotation is connected with the output shaft of second motor, the biased gear is engaged with external tooth；Clutch is provided between the sun gear and external toothing, when the clutch is combined, the sun gear and external toothing can be connected.The present invention disclosure satisfy that the speed change request under the different operating modes of electric automobile, with compact conformation, good reliability, the advantages of lubricating abundant.

Description

Planetary transmission for electric automobile
Technical field
The invention belongs to technical field of mechanical transmission, it is related to a kind of planetary transmission for electric automobile.
Background technology
In order to make full use of the advantage that electric machine speed regulation scope is wide, electric automobile generally uses electrodeless variable-speed, in the prior art, Have and realize electrodeless variable-speed using planetary gears, but the structure is difficult to the best match with the various operating modes of vehicle, example Such as, into motor charging process, power of motor is unnecessarily being wasted in sliding or travelling, in climbing or heavy duty starting, and it is difficult To meet big torque-demand.
The content of the invention
To solve above technical problem, the invention provides a kind of planetary transmission for electric automobile, transmission Efficiency high, and disclosure satisfy that the speed change request under the different operating modes of electric automobile.
Its technical scheme is as follows：
A kind of planetary transmission for electric automobile, including including the first motor, the second motor and planetary gear Mechanism, in addition to two brakes for being respectively used to brake the first motor and the second motor output shaft；
The planetary gears includes the sun gear being solidly set on the first motor output shaft, the planet engaged with sun gear Gear, the planet carrier with power output shaft and the external toothing engaged with planetary gear, the external toothing are provided with external tooth；
The biased gear of synchronous rotation is connected with the output shaft of second motor, the biased gear is nibbled with external tooth Close；
Clutch is provided between the sun gear and external toothing, can be by the sun gear and outer when the clutch is combined Gear ring is connected.
Using the gearbox of above structure, in driving, charging and coasting mode, it is possible to use the electricity of brake first One in machine and the second motor, i.e., using single electrical machine working mode；Two brakes unclamp simultaneously, planetary gears work, Entirety is equivalent to rotating speed coupler, into speed governing mode of operation, to adapt to low torque demand of the vehicle in the case of running at high speed； When vehicle is in climbing and heavy load starting, then can by clutch combination sun gear and gear ring, now planetary gears into For rigid body, torque coupling is carried out, to meet its big torque-demand.
Further, the brake includes brake outer cover, the output hub being installed in rotation in brake outer cover Just to the platen of the output hub, the brake outer cover is fixed on gear box casing, can be slided on the brake outer cover inwall It is embedded with dynamicly in the middle part of at least two slip steel disks, output hub and is provided with output shaft mounting hole, outer is provided with frictional disk, the frictional disk Stretch between two neighboring slip steel disk, be connected with holding stage clip between output hub and platen, be distributed with least on the outside of platen Piston is slidably mounted with two hydraulic jacks, the hydraulic jack, the piston is rigidly connected on platen.Using this Brake in the form of piston, can brake force of the Reliable guarantee when the output shaft to the first motor and the second motor is braked, Improve the reliability of gearbox.
In order to which the brake force that hydraulic jack and piston are provided is evenly applied on platen, to ensure that braking procedure is steady It is non-slip, the hydraulic jack altogether be 4, along platen on the outside of external circumferential be uniformly distributed.
Further, input gear is installed with the output shaft of second motor, centre is engaged with the input gear Gear, the idler gear is engaged with biased gear, and the idler gear and biased gear pass through intermediate gear shaft and biasing respectively Gear shaft is pivotally mounted in transmission housing body, so, and the second motor kinetic energy is delivered in biased gear through idler gear, Transmission internal can be facilitated to arrange, be easy to assembling, and increase the speed adjustable range of the second motor.
Further, a grease pump driving tooth is arranged with the output shaft of the power output shaft and the second motor Wheel, two lubricating oil pump driving gears are engaged with a lubricating oil pump driven gear, each grease pump driven tooth respectively Corresponding oil duct is respectively equipped with wheel one grease pump of each driving, two output shafts, so as to be driven using two output shaft self powers Two grease pumps are moved, to ensure the proper lubrication to gearbox.
Beneficial effect：Using the planetary transmission for electric automobile of above technical scheme, it disclosure satisfy that electronic Speed change request under automobile difference operating mode, with compact conformation, good reliability, the advantages of lubricating abundant.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the installation diagram of one of specific embodiment of the invention；
Fig. 3 is the structural representation of planetary gears；
Fig. 4 is the structural representation of brake；
Fig. 5 is the lubrication system schematic diagram on the second motor output shaft.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, by the following examples, and with reference to attached Figure, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain this hair It is bright, it is not intended to limit the present invention.
A kind of planetary transmission for electric automobile as depicted in figs. 1 and 2, including gear box casing 8, first Motor 1, the second motor 2 and planetary gears 3, the first motor 1 and the second motor 2 are arranged on the outside of gear box casing 8, and its is defeated Go out end and be each provided with a brake 4, the output shaft for braking the motor 2 of the first motor 1 and second, planetary gears 3 In gear box casing 8.
Input gear 21 is installed with the output shaft of second motor 2, idler gear 22 is engaged with the input gear 21, with Idler gear 22 is engaged with biased gear 6, and the idler gear 22 and biased gear 6 pass through intermediate gear shaft 23 and biased teeth respectively Wheel shaft 61 is pivotally mounted in gear box casing 8, biased gear 6 and the external toothing of external toothing 34, and can be in the second motor 2 Drive under with its output shaft synchronous rotate.
Fig. 3 shows the concrete structure of planetary gears 3, sun gear 31, the planetary gear 32 engaged with sun gear 31, Planet carrier 33 with power output shaft 5 and the external toothing 34 engaged with planetary gear 32.
Sun gear 31 is solidly set on the output shaft 1a of the first motor 1, and external toothing 34 is located at the outside of sun gear 31, sun gear 31 Multiple planetary gears 32 are engaged between external toothing 34, clutch 7 is also equipped between sun gear 31 and external toothing 34, from When clutch 7 is combined, the sun gear 31 and external toothing 34 can be connected.
The side of external toothing 34 is fixedly connected with the external tooth 34a of fluted disc structure to nibble with biased gear 6 by retainer 34b Close, by bearings between external tooth 34a and power output shaft 5, between the planet carrier 33 and power output shaft 5 of planetary gear 32 Connected by spline.
Fig. 4 is the structural representation for the brake 4 being set on the output shaft 2a of the second motor 2, and the brake 4 includes braking Device outer cover 41, the output hub 42 and platen 43 just to the output hub 42 being installed in rotation in brake outer cover 41, braking Device outer cover 41 is fixed on gear box casing 8, and the inwall of brake outer cover 41 is provided with chute 41a, and is slideably embedded with 4 Individual slip steel disk 44, chute 41a left end is fixed with a fixed steel disk 44a in figure.
Export the middle part of hub 42 and be provided with output shaft mounting hole 42a, and the second motor is set to by output shaft mounting hole 42a admittedly On 2 output shaft 2a, output hub 42 outer is provided with 4 frictional disks 45 stretched out, and the frictional disk 45 stretches into two neighboring cunning Between dynamic steel disk 44.
Platen 43 is rotatably sleeved on output shaft 2a by rolling bearing, is provided between output hub 42 and platen 43 Keep stage clip 46, under normality, i.e., non-brake state when, keep frictional disk 45 not to be in close contact with slip steel disk 44, in platen 43 Outside has been uniformly distributed circumferentially four hydraulic jacks 47, and piston 48, piston 48 are slidably mounted with the hydraulic jack 47 It is rigidly connected on platen 43, when being passed through hydraulic oil liquid into hydraulic jack 47 and then promoting piston 48 to be moved to the left, pressure Disk 43 can force the slip transverse shifting of steel disk 44 and extrusion friction disk 45, so that by the output shaft 2a and speed change of the second motor 2 Tank shell 8 is locked, to realize the braking to the output shaft 2a of second motor 2.
Another brake 4, i.e., for brake the output shaft 1a of the first motor 1 brake 4 and clutch 7 structure with it is above-mentioned The structure for the brake 4 being set on the output shaft 2a of the second motor 2 is similar, using oil cylinder piston form, for braking first The output shaft 1a of motor 1 brake 4 is acted directly on sun gear 31.
For convenience of lubricating, a grease pump driving tooth is arranged with the output shaft of the motor 2 of power output shaft 5 and second Wheel 9, two lubricating oil pump driving gears 9 are engaged with a lubricating oil pump driven gear 9a, each grease pump driven tooth respectively Take turns 9a respectively one grease pump 9b of driving.
Fig. 5 show upper left side in Fig. 1, that is, the schematic diagram for the lubrication system being arranged on the output shaft 2a of the second motor 2, Lubricating oil pump driving gear 9 is solidly set on the output shaft 2a of the second motor 2, and lubricating oil pump driven gear 9a is solidly set on grease pump Engage, become with driving grease pump 9b, grease pump 9b to be arranged on 9b oil pump shaft and with lubricating oil pump driving gear 9 In fast tank shell 8.
Corresponding oil leab is provided with the output shaft 2a of the motor 2 of power output shaft 5 and second, and is lubricated with corresponding Oil pump 9b is connected, to be lubricated to output shaft, planetary gears, brake and clutch.
It should be noted that above example is only to illustrate technical solution of the present invention rather than restriction technologies scheme, although Applicant is explained in detail with reference to preferred embodiment to the present invention, it will be understood by those within the art that, those are right Modification or equivalent substitution that technical solution of the present invention is carried out, it is impossible to depart from the objective and scope of the technical program, all should cover Among scope of the invention as claimed.

Claims (5)

1. a kind of planetary transmission for electric automobile, including the first motor (1), the second motor (2) and planetary gear Mechanism (3), it is characterised in that：Also include two brakings for being respectively used to brake the first motor (1) and the second motor (2) output shaft Device (4)；
The planetary gears (3) includes the sun gear (31) being solidly set on the first motor (1) output shaft and sun gear (31) The planetary gear (32) of engagement, the planet carrier (33) with power output shaft (5) and the external toothing engaged with planetary gear (32) (34), the external toothing (34) is provided with external tooth (34a)；
The biased gear (6) of synchronous rotation is connected with the output shaft of second motor (2), the biased gear (6) with External tooth (34a) is engaged；
Between the sun gear (31) and external toothing (34) be provided with clutch (7), when the clutch (7) is combined, can will described in Sun gear (31) and external toothing (34) are connected.
2. the planetary transmission according to claim 1 for electric automobile, it is characterised in that：The brake (4) brake outer cover (41), the output hub (42) being installed in rotation in brake outer cover (41) are included and just to the output The platen (43) of hub (42), the brake outer cover (41) is fixed on gear box casing (8), brake outer cover (41) inwall On be slideably embedded with least two slip steel disks (44), output shaft mounting hole (42a), outer are provided with the middle part of output hub (42) Provided with frictional disk (45), the frictional disk (45) is stretched between two neighboring slip steel disk (44), output hub (42) and platen (43) Between be connected with holding stage clip (46), at least two hydraulic jacks (47), the hydraulic jack are distributed with the outside of the platen (43) (47) piston (48) is slidably mounted with, the piston (48) is rigidly connected on platen (43).
3. the planetary transmission according to claim 2 for electric automobile, it is characterised in that：The hydraulic jack (47) it is 4 altogether, is uniformly distributed along platen (43) outside external circumferential.
4. the planetary transmission according to claim 2 for electric automobile, it is characterised in that：Second motor (2) input gear (21) is installed with output shaft, idler gear (22), the center tooth are engaged with the input gear (21) Wheel (22) is engaged with biased gear (6), and the idler gear (22) and biased gear (6) are respectively by intermediate gear shaft (23) and inclined Gear shaft (61) is put to be pivotally mounted in gear box casing (8).
5. the planetary transmission according to any one of claim 1 to 4 for electric automobile, it is characterised in that： A lubricating oil pump driving gear (9), two are arranged with the output shaft of the power output shaft (5) and the second motor (2) The lubricating oil pump driving gear (9) is engaged with a lubricating oil pump driven gear (9a), each grease pump driven tooth respectively Take turns (9a) respectively one grease pump (9b) of driving.
CN201710480370.3A 2017-04-01 2017-06-22 Planetary gear gearbox for electric automobile Active CN107091305B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2017102120228 2017-04-01
CN201710212022.8A CN106931101A (en) 2017-04-01 2017-04-01 For the planetary transmission of electric automobile

Publications (2)

Publication Number Publication Date
CN107091305A true CN107091305A (en) 2017-08-25
CN107091305B CN107091305B (en) 2023-11-07

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CN201710212022.8A Pending CN106931101A (en) 2017-04-01 2017-04-01 For the planetary transmission of electric automobile
CN201710480370.3A Active CN107091305B (en) 2017-04-01 2017-06-22 Planetary gear gearbox for electric automobile

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CN201710212022.8A Pending CN106931101A (en) 2017-04-01 2017-04-01 For the planetary transmission of electric automobile

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Cited By (2)

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CN109442005A (en) * 2018-12-28 2019-03-08 东风商用车有限公司 A kind of large speed ratio high-speed planets system reducer structure
CN113236731A (en) * 2021-05-10 2021-08-10 柳工柳州传动件有限公司 Planetary gearbox and electric engineering machinery

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WO2019153146A1 (en) * 2018-02-07 2019-08-15 深圳市万维博新能源技术有限公司 New-energy at transmission

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