CN111396516B - Planetary gear speed change device for electric automobile - Google Patents

Planetary gear speed change device for electric automobile Download PDF

Info

Publication number
CN111396516B
CN111396516B CN202010487214.1A CN202010487214A CN111396516B CN 111396516 B CN111396516 B CN 111396516B CN 202010487214 A CN202010487214 A CN 202010487214A CN 111396516 B CN111396516 B CN 111396516B
Authority
CN
China
Prior art keywords
rotating shaft
shaft
gear set
brake
planetary gear
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.)
Active
Application number
CN202010487214.1A
Other languages
Chinese (zh)
Other versions
CN111396516A (en
Inventor
董鹏
徐向阳
王书翰
刘艳芳
郭伟
吴潇潇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beihang University
Original Assignee
Beihang University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beihang University filed Critical Beihang University
Priority to CN202010487214.1A priority Critical patent/CN111396516B/en
Publication of CN111396516A publication Critical patent/CN111396516A/en
Application granted granted Critical
Publication of CN111396516B publication Critical patent/CN111396516B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • F16H3/62—Gearings having three or more central gears
    • F16H3/66—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another
    • 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
    • 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
    • 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
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/70—Gearings
    • B60Y2400/73—Planetary gearings
    • 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
    • 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
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward 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
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/20—Transmissions using gears with orbital motion
    • F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
    • F16H2200/2007—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with two sets of 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
    • 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
    • F16H2200/2035—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with two engaging means
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Structure Of Transmissions (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The invention discloses a planetary gear speed change device for an electric automobile, which comprises a first rotating shaft, a second rotating shaft, a third rotating shaft, a fourth rotating shaft, a box body, a first planetary gear set, a second planetary gear set, a first brake and a second brake, wherein the first rotating shaft is connected with the second rotating shaft; the sun gear of the first planetary gear set is arranged on a first rotating shaft, the planet carrier is arranged on a second rotating shaft, the gear ring is positioned on a third rotating shaft, the sun gear of the second planetary gear set is arranged on the first rotating shaft, the planet carrier is arranged on the third rotating shaft, the gear ring is arranged on a fourth rotating shaft, the first brake is connected with the third rotating shaft and the box body, the second brake is connected with the fourth rotating shaft and the box body, the driving motor inputs power into the first rotating shaft, and the second rotating shaft outputs the power to the wheels. The speed change structure of the invention realizes two gears with different speed ratios, obtains a large transmission ratio while keeping a compact structure, and is particularly suitable for electric automobiles.

Description

Planetary gear speed change device for electric automobile
Technical Field
The invention belongs to an electric automobile speed change device, and particularly relates to a two-gear speed change device based on a planetary gear, which is compact in structure.
Background
In modern society, air pollution is becoming more serious, energy consumption is increasing day by day, and the development of electric vehicles is gaining wide attention all over the world. The electric automobile adopts the motor to replace the engine of the traditional automobile, the motor can be started with load, and the use requirement of the automobile is met through reasonable configuration. And for electric vehicles, multi-speed transmissions have not been available, so it has been necessary to redesign the powertrain of an electric vehicle for the operating characteristics of the electric motor.
Patent ZL201580078041.5 discloses an electric axle drive for a motor vehicle, as shown in fig. 1, which uses a simple plus planetary gear set 10, a clutch 26 and a brake 29 to achieve two gears of different speed ratios. The planet row, the clutch and the brake are all positioned on a parallel shaft system parallel to the input shaft 4, the brake is closed, the clutch is opened to form a 1 gear, and the clutch is closed, the brake is opened to form a 2 gear. But with a simple plus planetary row (inherent ratio greater than 0) as shown in fig. 3. This type planet row planet wheel is many, and the sun gear is passed through 2 planet wheels to the ring gear between, and the part is more, and the structure is complicated, forms the auto-lock easily. In addition, since the clutch occupies a large space in structural arrangement, it is difficult to achieve a compact structural design.
Patent zl201610238070.x discloses an integrated two-gear automatic electric drive assembly for an electric vehicle, in which 2 different speed ratio gears are realized using a fixed-axis gear set plus two clutches arranged on an input shaft, as shown in fig. 2. This patent adopts dead axle gear and two clutches to have following shortcoming: firstly, the occupied space is large, which is not beneficial to the design and the arrangement of compact structure; secondly, a larger transmission ratio is not easy to form, and the large transmission ratio scheme needs larger space.
Disclosure of Invention
In order to solve the defects of the prior art, the invention utilizes two simple minus planetary rows to be matched with two brakes, realizes two gears with different speed ratios, obtains a large transmission ratio while keeping a compact structure, and is particularly suitable for electric automobiles.
The specific technical scheme of the invention is as follows:
a planetary gear transmission for an electric vehicle, comprising:
the brake device comprises a first rotating shaft 1, a second rotating shaft 2, a third rotating shaft 3, a fourth rotating shaft 4, a box body 9, a first planetary gear set 5, a second planetary gear set 6, a first brake 7 and a second brake 8;
the sun gear of the first planetary gear set 5 is arranged on the first rotating shaft 1, the planet carrier is arranged on the second rotating shaft 2, the gear ring is positioned on the third rotating shaft 3, the sun gear of the second planetary gear set 6 is arranged on the first rotating shaft 1, the planet carrier is arranged on the third rotating shaft 3, the gear ring is arranged on the fourth rotating shaft 4, the first brake 7 is connected with the third rotating shaft 3 and the box body 9, and the second brake 8 is connected with the fourth rotating shaft 4 and the box body 9;
the driving motor 10 inputs power to the first rotating shaft 1, and the second rotating shaft 2 outputs power to the wheels.
Alternatively, according to another embodiment of the present invention, the planetary gear transmission for electric vehicles further includes a first fixed shaft gear set 12 and an output shaft 14; the driving motor 10 is connected with the first rotating shaft 1, the pinion of the first fixed shaft gear set 12 is arranged on the second rotating shaft 2, the gearwheel of the first fixed shaft gear set 12 is arranged on the output shaft 14, and the output shaft 14 outputs power to wheels.
Alternatively, according to another embodiment of the present invention, the planetary gear transmission for electric vehicles further includes an input shaft 11, a first fixed shaft gear set 12, a second fixed shaft gear set 13, and an output shaft 14; the driving motor 10 is connected with the input shaft 11, the pinion of the first fixed shaft gear set 12 is arranged on the input shaft 11, and the bull gear of the first fixed shaft gear set 12 is arranged on the first rotating shaft 1; the pinion of the second fixed shaft gear set 13 is arranged on the second rotating shaft 2, the bull gear of the second fixed shaft gear set 13 is arranged on the output shaft 14, and the output shaft 14 outputs power to the wheels.
Alternatively, according to another embodiment of the present invention, the planetary gear transmission for electric vehicles further includes a first fixed shaft gear set 12, a second fixed shaft gear set 13, an output shaft 14, and an intermediate shaft 16; the driving motor 10 is connected with the first rotating shaft 1, the pinion of the first fixed shaft gear set 12 is arranged on the second rotating shaft 2, and the gearwheel of the first fixed shaft gear set 12 is arranged on the intermediate shaft 16; the pinion of the second fixed-axis gear set 13 is arranged on the intermediate shaft 16, the bull gear of the second fixed-axis gear set 13 is arranged on the output shaft 14, and the output shaft 14 outputs power to wheels.
Alternatively, according to another embodiment of the present invention, the planetary gear transmission for an electric vehicle is arranged vertically in the electric vehicle for rear drive, and the driving motor 10 is connected to the first rotating shaft 1, and the second rotating shaft 2 directly serves as an output shaft to output power to wheels.
Alternatively, according to another embodiment of the present invention, the planetary gear transmission for electric vehicles further includes a clutch 17 connecting the first rotating shaft 1 and the third rotating shaft 3, and the clutch 17 is disposed at one end of the transmission and near the case 9.
Alternatively, according to another embodiment of the present invention, the planetary gear transmission for electric vehicles further includes a differential 15 provided on the output shaft 14.
Alternatively, according to another embodiment of the present invention, the first planetary gear set 5 and the second planetary gear set 6 of the planetary gear transmission device for an electric vehicle are each a simple minus planetary row; the first brake 7 and the second brake 8 are wet multi-plate brakes, claw brakes or selectable one-way brakes; the clutch 17 is a wet multiplate brake, a claw brake or an alternative one-way brake.
Alternatively, according to another embodiment of the present invention, the planetary gear transmission for an electric vehicle is provided at a front axle or a rear axle of the vehicle and integrates a differential.
A planetary gear transmission for an extended range electric vehicle, comprising:
the device comprises a first rotating shaft 1, a second rotating shaft 2, a third rotating shaft 3, a fourth rotating shaft 4, a first planetary gear set 5, a second planetary gear set 6, a first brake 7, a second brake 8, a box body 9, a first fixed shaft gear set 12, a second fixed shaft gear set 13, an output shaft 14, an intermediate shaft 16, an engine 18, a second motor 19, a first motor 20, a third fixed shaft gear set 21 and a driving motor shaft 22;
the engine 18 and the second motor 19 are both connected with the first rotating shaft 1, the sun gear of the first planetary gear set 5 is arranged on the first rotating shaft 1, the planet carrier is arranged on the second rotating shaft 2, the gear ring is arranged on the third rotating shaft 3, the sun gear of the second planetary gear set 6 is arranged on the first rotating shaft 1, the planet carrier is arranged on the third rotating shaft 3, the gear ring is arranged on the fourth rotating shaft 4, the first brake 7 is connected with the third rotating shaft 3 and the box body 9, and the second brake 8 is connected with the fourth rotating shaft 4 and the box body 9; the pinion of the first fixed shaft gear set 12 is arranged on the second rotating shaft 2, the gearwheel of the first fixed shaft gear set 12 is arranged on the intermediate shaft 16, the pinion of the second fixed shaft gear set 13 is arranged on the intermediate shaft 16, the gearwheel of the second fixed shaft gear set 13 is arranged on the output shaft 14, the pinion of the third fixed shaft gear set 21 is arranged on the driving motor shaft 22, the gearwheel of the third fixed shaft gear set 21 is arranged on the intermediate shaft 16, the first motor 20 is connected with the driving motor shaft 22, and the output shaft 14 outputs power to the wheels.
Optionally, according to another embodiment of the present invention, the planetary gear transmission for an extended range electric vehicle further includes a clutch 17 connecting the first rotating shaft 1 and the third rotating shaft 3, and the clutch 17 is disposed at one end of the transmission and near the case 9.
Optionally, according to another embodiment of the present invention, the planetary gear transmission for an extended range electric vehicle further comprises a differential 15 provided on the output shaft 14.
Alternatively, according to another embodiment of the present invention, the first planetary gear set 5 and the second planetary gear set 6 of the planetary gear transmission device for the extended range electric vehicle are both simple minus planetary rows; the first brake 7 and the second brake 8 are wet multi-plate brakes, claw brakes or selectable one-way brakes; the clutch 17 is a wet multiplate brake, a claw brake or an alternative one-way brake.
Alternatively, according to another embodiment of the present invention, the planetary gear transmission for an extended range electric vehicle is provided at a front axle or a rear axle of the vehicle and integrates a differential.
The invention has the beneficial effects that:
1. the invention adopts double planet rows and double brakes to form two gears with different speed ratios, and the unique connection relationship between different elements of the two planet rows and between the different elements and the brakes ensures that the two brakes are respectively connected with the gear rings of the two planet rows, so that the brakes and the planet rows can be nested. In addition, the brake requires less axial space in terms of arrangement than the clutch, so that the invention makes it possible to achieve a more compact structural layout and a shorter axial dimension.
2. Compared with the prior art, the invention has higher mechanical transmission efficiency and larger gear ratio by adopting two simple negative planetary rows, and is easier to obtain larger 1-gear transmission ratio.
3. The oil circuit of the speed change device is simple and easy to arrange, is convenient to produce and process, and can directly supply oil to the piston cavity of the brake from the box body.
Drawings
In order to illustrate embodiments of the present invention or technical solutions in the prior art more clearly, the drawings which are needed in the embodiments will be briefly described below, so that the features and advantages of the present invention can be understood more clearly by referring to the drawings, which are schematic and should not be construed as limiting the present invention in any way, and for a person skilled in the art, other drawings can be obtained on the basis of these drawings without any inventive effort. Wherein:
FIG. 1 is a drawing of the specification of patent ZL 201580078041.5;
FIG. 2 is a drawing of the specification of patent ZL201610238070. X;
FIG. 3 is a schematic structural view of a simple plus planetary row;
FIG. 4a is a schematic two-speed illustration of the planetary transmission for an electric vehicle of the present invention;
FIG. 4b is a schematic third gear of the planetary transmission for an electric vehicle of the present invention;
FIG. 5 is a schematic structural view of embodiment 1 of the present invention;
FIG. 6 is a schematic structural view of embodiment 2 of the present invention;
FIG. 7 is a schematic structural view of embodiment 3 of the present invention;
FIG. 8 is a schematic structural view of embodiment 4 of the present invention;
fig. 9 is a schematic structural view of embodiment 5 of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
As shown in fig. 4a, a planetary gear transmission for an electric vehicle includes:
the brake device comprises a first rotating shaft 1, a second rotating shaft 2, a third rotating shaft 3, a fourth rotating shaft 4, a box body 9, a first planetary gear set 5, a second planetary gear set 6, a first brake 7 and a second brake 8;
the sun gear of the first planetary gear set 5 is arranged on the first rotating shaft 1, the planet carrier is arranged on the second rotating shaft 2, the gear ring is positioned on the third rotating shaft 3, the sun gear of the second planetary gear set 6 is arranged on the first rotating shaft 1, the planet carrier is arranged on the third rotating shaft 3, the gear ring is arranged on the fourth rotating shaft 4, the first brake 7 is connected with the third rotating shaft 3 and the box body 9, and the second brake 8 is connected with the fourth rotating shaft 4 and the box body 9;
the driving motor 10 inputs power to the first rotating shaft 1, and the second rotating shaft 2 outputs power to the wheels.
The first planetary gear set 5 is a simple negative planetary row;
the second planetary gear set 6 is a simple minus planetary row;
the first brake 7 is a wet multi-disc brake, a claw brake or a selectable one-way brake;
the second brake 8 is a wet multi-disc brake, a claw brake or a selectable one-way brake.
In addition, a clutch 17 connecting the first rotating shaft 1 and the third rotating shaft 3 can be arranged at one end of the speed changing structure near the box body, as shown in fig. 4b, so that the three-gear switching is realized.
Example 1
As shown in fig. 5, a planetary gear transmission for an electric vehicle, which is disposed at a front axle of the electric vehicle, specifically includes:
the driving device comprises a driving motor 10, a first rotating shaft 1, a second rotating shaft 2, a third rotating shaft 3, a fourth rotating shaft 4, a box 9, a first planetary gear set 5, a second planetary gear set 6, a first brake 7, a second brake 8, an input shaft 11, a first fixed shaft gear set 12, a second fixed shaft gear set 13, an output shaft 14 and a differential mechanism 15;
the driving motor 10 is connected with the input shaft 11, the pinion of the first fixed shaft gear set 12 is arranged on the input shaft 11, the bull gear of the first fixed shaft gear set 12 is arranged on the first rotating shaft 1, the sun gear of the first planetary gear set 5 is arranged on the first rotating shaft 1, the planet carrier is arranged on the second rotating shaft 2, the gear ring is arranged on the third rotating shaft 3, the sun gear of the second planetary gear set 6 is arranged on the first rotating shaft 1, the planet carrier is arranged on the third rotating shaft 3, the gear ring is arranged on the fourth rotating shaft 4, the first brake 7 is connected with the third rotating shaft 3 and the box body 9, and the second brake 8 is connected with the fourth rotating shaft 4 and the box body 9; the pinion of the second fixed-axis gear set 13 is arranged on the second rotating shaft 2, the bull gear of the second fixed-axis gear set 13 is arranged on the output shaft 14, the differential 15 is arranged on the output shaft 14, and the output shaft 14 outputs power to wheels.
Gear shifting: when the first brake 7 is closed and the second brake 8 is opened, the speed changing device is positioned in the 1 st gear; when the first brake 7 is on and the second brake 8 is on, the transmission is in 2-gear.
Example 2
As shown in fig. 6, a planetary gear transmission for an electric vehicle, which is disposed at a rear axle of the electric vehicle, specifically includes:
the transmission mechanism comprises a first rotating shaft 1, a second rotating shaft 2, a third rotating shaft 3, a fourth rotating shaft 4, a box body 9, a first planetary gear set 5, a second planetary gear set 6, a first brake 7, a second brake 8, a first dead axle gear set 12, a second dead axle gear set 13, an output shaft 14, a differential 15 and an intermediate shaft 16;
the driving motor 10 is connected with the first rotating shaft 1, the sun gear of the first planetary gear set 5 is arranged on the first rotating shaft 1, the planet carrier is arranged on the second rotating shaft 2, the gear ring is arranged on the third rotating shaft 3, the sun gear of the second planetary gear set 6 is arranged on the first rotating shaft 1, the planet carrier is arranged on the third rotating shaft 3, the gear ring is arranged on the fourth rotating shaft 4, the first brake 7 is connected with the third rotating shaft 3 and the box body 9, the second brake 8 is connected with the fourth rotating shaft 4 and the box body 9, the pinion of the first fixed shaft gear set 12 is arranged on the second rotating shaft 2, the bull gear of the first fixed shaft gear set 12 is arranged on the intermediate shaft 16, the pinion of the second fixed shaft gear set 13 is arranged on the intermediate shaft 16, the bull gear of the second fixed shaft gear set 13 is arranged on the output shaft 14, the differential mechanism 15 is arranged on the output.
Gear shifting: when the first brake 7 is closed and the second brake 8 is opened, the speed changing device is positioned in the 1 st gear; when the first brake 7 is on and the second brake 8 is on, the transmission is in 2-gear.
Example 3
As shown in fig. 7, a planetary gear transmission for an electric vehicle, which is disposed at a front axle of the electric vehicle, specifically includes:
the device comprises a first rotating shaft 1, a second rotating shaft 2, a third rotating shaft 3, a fourth rotating shaft 4, a box body 9, a first planetary gear set 5, a second planetary gear set 6, a first brake 7, a second brake 8, a first fixed shaft gear set 12, an output shaft 14 and a differential mechanism 15;
the driving motor 10 is connected with the first rotating shaft 1, the sun gear of the first planetary gear set 5 is arranged on the first rotating shaft 1, the planet carrier is arranged on the second rotating shaft 2, the gear ring is positioned on the third rotating shaft 3, the sun gear of the second planetary gear set 6 is arranged on the first rotating shaft 1, the planet carrier is arranged on the third rotating shaft 3, the gear ring is arranged on the fourth rotating shaft 4, the first brake 7 is connected with the third rotating shaft 3 and the box body 9, the second brake 8 is connected with the fourth rotating shaft 4 and the box body 9, the pinion of the first fixed shaft gear set 12 is arranged on the second rotating shaft 2, the gearwheel of the first fixed shaft gear set 12 is arranged on the output shaft 14, the differential mechanism 15 is arranged on the output shaft 14, and the output shaft 14 outputs power.
Gear shifting: when the first brake 7 is closed and the second brake 8 is opened, the speed changing device is positioned in the 1 st gear; when the first brake 7 is on and the second brake 8 is on, the transmission is in 2-gear.
Example 4
As shown in fig. 8, a planetary gear transmission for an electric vehicle, which is longitudinally arranged in the electric vehicle without integrating a differential, is used for rear driving, and specifically comprises:
the brake device comprises a first rotating shaft 1, a second rotating shaft 2, a third rotating shaft 3, a fourth rotating shaft 4, a box body 9, a first planetary gear set 5, a second planetary gear set 6, a first brake 7 and a second brake 8;
the driving motor 10 is connected with the first rotating shaft 1, the sun gear of the first planetary gear set 5 is arranged on the first rotating shaft 1, the planet carrier is arranged on the second rotating shaft 2, the gear ring is arranged on the third rotating shaft 3, the sun gear of the second planetary gear set 6 is arranged on the first rotating shaft 1, the planet carrier is arranged on the third rotating shaft 3, the gear ring is arranged on the fourth rotating shaft 4, the first brake 7 is connected with the third rotating shaft 3 and the box body 9, the second brake 8 is connected with the fourth rotating shaft 4 and the box body 9, and the second rotating shaft 2 is directly used as an output shaft to output power to wheels.
Gear shifting: when the first brake 7 is closed and the second brake 8 is opened, the speed changing device is positioned in the 1 st gear; when the first brake 7 is on and the second brake 8 is on, the transmission is in 2-gear.
Example 5
As shown in fig. 9, a planetary gear transmission for an extended range electric vehicle includes:
the device comprises a first rotating shaft 1, a second rotating shaft 2, a third rotating shaft 3, a fourth rotating shaft 4, a first planetary gear set 5, a second planetary gear set 6, a first brake 7, a second brake 8, a box body 9, a first fixed shaft gear set 12, a second fixed shaft gear set 13, an output shaft 14, a differential 15, an intermediate shaft 16, an engine 18, a second motor 19, a first motor 20, a third fixed shaft gear set 21 and a driving motor shaft 22;
the engine 18 and the second motor 19 are both connected with the first rotating shaft 1, the sun gear of the first planetary gear set 5 is arranged on the first rotating shaft 1, the planet carrier is arranged on the second rotating shaft 2, the gear ring is arranged on the third rotating shaft 3, the sun gear of the second planetary gear set 6 is arranged on the first rotating shaft 1, the planet carrier is arranged on the third rotating shaft 3, the gear ring is arranged on the fourth rotating shaft 4, the first brake 7 is connected with the third rotating shaft 3 and the box body 9, and the second brake 8 is connected with the fourth rotating shaft 4 and the box body 9; the pinion of the first fixed shaft gear set 12 is arranged on the second rotating shaft 2, the gearwheel of the first fixed shaft gear set 12 is arranged on the intermediate shaft 16, the pinion of the second fixed shaft gear set 13 is arranged on the intermediate shaft 16, the gearwheel of the second fixed shaft gear set 13 is arranged on the output shaft 14, the pinion of the third fixed shaft gear set 21 is arranged on the driving motor shaft 22, the gearwheel of the third fixed shaft gear set 21 is arranged on the intermediate shaft 16, the first motor 20 is connected with the driving motor shaft 22, the differential mechanism 15 is arranged on the output shaft 14, and the output shaft 14 outputs power to wheels.
Gear shifting:
the first brake 7 and the second brake 8 are both on, the engine 18 and the second electric machine 19 are not running, the first electric machine 20 is running: a pure electric mode is realized;
the first brake 7 and the second brake 8 are both opened, the engine 18, the first motor 20 and the second motor 19 are operated: realizing a series mode;
the first brake 7 is closed and the second brake 8 is open: a parallel 1-gear mode is realized;
the second brake 8 is closed and the first brake 7 is opened, thus realizing the parallel 2-gear mode.
Furthermore, the foregoing describes only some embodiments and alterations, modifications, additions and/or changes may be made without departing from the scope and spirit of the disclosed embodiments, which are intended to be illustrative rather than limiting. Furthermore, the described embodiments are directed to embodiments presently contemplated to be the most practical and preferred, it being understood that the embodiments should not be limited to the disclosed embodiments, but on the contrary, are intended to cover various modifications and equivalent arrangements included within the spirit and scope of the embodiments. Moreover, the various embodiments described above can be used in conjunction with other embodiments, e.g., aspects of one embodiment can be combined with aspects of another embodiment to realize yet another embodiment. In addition, each individual feature or element of any given assembly may constitute additional embodiments.
The foregoing description of the embodiments has been presented for purposes of illustration and description and is not intended to be exhaustive or to limit the disclosure. The various elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.
Accordingly, it is to be understood that the drawings and description are proffered by way of example to facilitate comprehension of the invention and should not be construed to limit the scope thereof.

Claims (12)

1. A planetary gear transmission for an electric vehicle, comprising:
the brake device comprises a first rotating shaft (1), a second rotating shaft (2), a third rotating shaft (3), a fourth rotating shaft (4), a box body (9), a first planetary gear set (5), a second planetary gear set (6), a first brake (7) and a second brake (8);
the sun gear of the first planetary gear set (5) is arranged on the first rotating shaft (1), the planet carrier is arranged on the second rotating shaft (2), the gear ring is positioned on the third rotating shaft (3), the sun gear of the second planetary gear set (6) is arranged on the first rotating shaft (1), the planet carrier is arranged on the third rotating shaft (3), the gear ring is arranged on the fourth rotating shaft (4), the first brake (7) is connected with the third rotating shaft (3) and the box body (9), and the second brake (8) is connected with the fourth rotating shaft (4) and the box body (9);
the driving motor (10) inputs power into the first rotating shaft (1), and the second rotating shaft (2) outputs the power to wheels;
the transmission also comprises a clutch (17) for connecting the first rotating shaft (1) and the third rotating shaft (3), wherein the clutch (17) is arranged at one end of the transmission and is close to the box body (9).
2. The planetary gear transmission for electric vehicles according to claim 1,
the gear box also comprises a first fixed shaft gear set (12) and an output shaft (14);
the driving motor (10) is connected with the first rotating shaft (1), a pinion of the first fixed shaft gear set (12) is arranged on the second rotating shaft (2), a gearwheel of the first fixed shaft gear set (12) is arranged on the output shaft (14), and the output shaft (14) outputs power to wheels.
3. The planetary gear transmission for electric vehicles according to claim 1,
the gear box further comprises an input shaft (11), a first fixed shaft gear set (12), a second fixed shaft gear set (13) and an output shaft (14);
the driving motor (10) is connected with the input shaft (11), a pinion of the first fixed shaft gear set (12) is arranged on the input shaft (11), and a gearwheel of the first fixed shaft gear set (12) is arranged on the first rotating shaft (1); the small gear of the second dead axle gear set (13) is arranged on the second rotating shaft (2), the large gear of the second dead axle gear set (13) is arranged on the output shaft (14), and the output shaft (14) outputs power to wheels.
4. The planetary gear transmission for electric vehicles according to claim 1,
the transmission also comprises a first fixed shaft gear set (12), a second fixed shaft gear set (13), an output shaft (14) and an intermediate shaft (16);
the driving motor (10) is connected with the first rotating shaft (1), a pinion of the first fixed shaft gear set (12) is arranged on the second rotating shaft (2), and a gearwheel of the first fixed shaft gear set (12) is arranged on the intermediate shaft (16); the small gear of the second fixed shaft gear set (13) is arranged on the intermediate shaft (16), the large gear of the second fixed shaft gear set (13) is arranged on the output shaft (14), and the output shaft (14) outputs power to wheels.
5. The planetary gear transmission for electric vehicles according to claim 1,
the speed change device is longitudinally arranged in the electric automobile and used for rear drive, the driving motor (10) is connected with the first rotating shaft (1), and the second rotating shaft (2) is directly used as an output shaft to output power to wheels.
6. A planetary gear transmission for electric vehicles according to any of claims 2-4, further comprising a differential (15) provided on the output shaft (14).
7. A planetary gear transmission for electric vehicles according to any of claims 1-5, characterized in that the first planetary gear set (5) and the second planetary gear set (6) are both simple minus planetary rows; the first brake (7) and the second brake (8) are wet multi-plate brakes, claw brakes or selectable one-way brakes; the clutch (17) is a wet multi-plate brake, a claw brake or an optional one-way brake.
8. A planetary gear transmission for electric vehicles according to any of claims 1-4, characterized in that the transmission is arranged at the front or rear axle of the vehicle and integrates a differential.
9. A planetary gear transmission for an extended range electric vehicle, comprising:
the gear box comprises a first rotating shaft (1), a second rotating shaft (2), a third rotating shaft (3), a fourth rotating shaft (4), a first planetary gear set (5), a second planetary gear set (6), a first brake (7), a second brake (8), a box body (9), a first fixed shaft gear set (12), a second fixed shaft gear set (13), an output shaft (14), an intermediate shaft (16), an engine (18), a second motor (19), a first motor (20), a third fixed shaft gear set (21) and a driving motor shaft (22);
the engine (18) and the second motor (19) are both connected with the first rotating shaft (1), the sun gear of the first planetary gear set (5) is arranged on the first rotating shaft (1), the planet carrier is arranged on the second rotating shaft (2), the gear ring is arranged on the third rotating shaft (3), the sun gear of the second planetary gear set (6) is arranged on the first rotating shaft (1), the planet carrier is arranged on the third rotating shaft (3), the gear ring is arranged on the fourth rotating shaft (4), the first brake (7) is connected with the third rotating shaft (3) and the box body (9), and the second brake (8) is connected with the fourth rotating shaft (4) and the box body (9); a pinion of the first fixed shaft gear set (12) is arranged on the second rotating shaft (2), a gearwheel of the first fixed shaft gear set (12) is arranged on the intermediate shaft (16), a pinion of the second fixed shaft gear set (13) is arranged on the intermediate shaft (16), a gearwheel of the second fixed shaft gear set (13) is arranged on the output shaft (14), a pinion of the third fixed shaft gear set (21) is arranged on a driving motor shaft (22), a gearwheel of the third fixed shaft gear set (21) is arranged on the intermediate shaft (16), the first motor (20) is connected with the driving motor shaft (22), and the output shaft (14) outputs power to wheels;
the transmission also comprises a clutch (17) for connecting the first rotating shaft (1) and the third rotating shaft (3), wherein the clutch (17) is arranged at one end of the transmission and is close to the box body (9).
10. A planetary gear transmission for an extended range electric vehicle according to claim 9, further comprising a differential (15) provided on the output shaft (14).
11. The planetary gear transmission for extended range electric vehicles according to claim 9, characterized in that the first planetary gear set (5) and the second planetary gear set (6) are both simple minus planetary rows; the first brake (7) and the second brake (8) are wet multi-plate brakes, claw brakes or selectable one-way brakes; the clutch (17) is a wet multi-plate brake, a claw brake or an optional one-way brake.
12. The planetary gear transmission for an extended range electric vehicle of claim 9, wherein the transmission is disposed at a front axle or a rear axle of the vehicle and integrates a differential.
CN202010487214.1A 2020-06-02 2020-06-02 Planetary gear speed change device for electric automobile Active CN111396516B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010487214.1A CN111396516B (en) 2020-06-02 2020-06-02 Planetary gear speed change device for electric automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010487214.1A CN111396516B (en) 2020-06-02 2020-06-02 Planetary gear speed change device for electric automobile

Publications (2)

Publication Number Publication Date
CN111396516A CN111396516A (en) 2020-07-10
CN111396516B true CN111396516B (en) 2020-10-16

Family

ID=71435670

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010487214.1A Active CN111396516B (en) 2020-06-02 2020-06-02 Planetary gear speed change device for electric automobile

Country Status (1)

Country Link
CN (1) CN111396516B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111734796A (en) * 2020-08-03 2020-10-02 北京航空航天大学 2-gear speed change mechanism for electric vehicle
DE102022201321B4 (en) * 2022-02-09 2023-10-12 Zf Friedrichshafen Ag Transmission for a vehicle

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008075721A (en) * 2006-09-20 2008-04-03 Mazda Motor Corp Automatic transmission
DE102013205379A1 (en) * 2013-03-27 2014-10-02 Zf Friedrichshafen Ag Transmission for a motor vehicle
CN103953698B (en) * 2014-04-30 2016-08-03 北京航空航天大学 A kind of electrically driven (operated) planetary transmission
CN203926644U (en) * 2014-04-30 2014-11-05 北京航空航天大学 A kind of electrically driven (operated) planetary transmission
US10486517B2 (en) * 2016-09-09 2019-11-26 GM Global Technology Operations LLC Concentric bridge gear system
CN110657203B (en) * 2018-06-29 2022-02-08 比亚迪股份有限公司 Transmission, power driving system and vehicle
CN109099131A (en) * 2018-08-30 2018-12-28 上海迪鲲机电科技有限公司 A kind of electric drive transmission device and control method for electric vehicle

Also Published As

Publication number Publication date
CN111396516A (en) 2020-07-10

Similar Documents

Publication Publication Date Title
US9458910B2 (en) Multi-ratio transmission
US8403803B2 (en) Multi-ratio transmission
US8894536B2 (en) Multistep gear mechanism
US8944953B2 (en) Multistep gear mechanism
US9285016B2 (en) Multi-ratio transmission
US20130029799A1 (en) Planetary gear train of automatic transmission for vehicles
US20150031495A1 (en) Multi-ratio transmission
CN106976389A (en) Double mode hybrid transmissions
WO2020029547A1 (en) Nine-gear automatic transmission
CN102207176A (en) Gear train of automatic transmission for vehicles
US8870707B2 (en) Multistage transmission
US9464693B2 (en) Multi-speed gearbox
US9175750B2 (en) Multi-ratio transmission
US9951848B2 (en) Planetary gear train of automatic transmission for vehicle
CN111396516B (en) Planetary gear speed change device for electric automobile
US7156768B2 (en) Multi-stage transmission
CN108528185B (en) Longitudinally-arranged multi-gear electric driving power assembly
CN108327514B (en) Multi-mode hybrid power transmission device
US9574640B2 (en) Transmission for a motor vehicle
GB2440347A (en) Automatic transmission with two Ravigneaux gearsets arranged in series
US20150111687A1 (en) Multi-speed gearbox
CN218777396U (en) Three-gear electric axle system
CN111577844A (en) Passenger car gearbox
CN112984059B (en) Longitudinal rear-drive planetary gear automatic gearbox
CN112065937B (en) Double-shaft nine-gear automatic transmission

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
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20200710

Assignee: Capotech (Suzhou) Co.,Ltd.

Assignor: BEIHANG University

Contract record no.: X2023990000003

Denomination of invention: A planetary gear transmission device for electric vehicles

Granted publication date: 20201016

License type: Common License

Record date: 20230104

EE01 Entry into force of recordation of patent licensing contract