CN205534057U - Electric automobile's two -stage gearbox - Google Patents

Electric automobile's two -stage gearbox Download PDF

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Publication number
CN205534057U
CN205534057U CN201620335081.5U CN201620335081U CN205534057U CN 205534057 U CN205534057 U CN 205534057U CN 201620335081 U CN201620335081 U CN 201620335081U CN 205534057 U CN205534057 U CN 205534057U
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CN
China
Prior art keywords
gear
planet
electric automobile
sun gear
sun
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.)
Expired - Fee Related
Application number
CN201620335081.5U
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Chinese (zh)
Inventor
党磊磊
刘晓晴
梁帝
郑泽亚
党盼盼
曾红
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Changan University
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Changan 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 Changan University filed Critical Changan University
Priority to CN201620335081.5U priority Critical patent/CN205534057U/en
Application granted granted Critical
Publication of CN205534057U publication Critical patent/CN205534057U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an electric automobile's two -stage gearbox, including first planet wheelset, second planet wheelset, ring gear, first planet carrier, second planet carrier, first sun gear and second sun gear, first planet wheelset is installed on first planet carrier, and second planet wheelset is installed on the second planet carrier, first planet wheelset, first sun gear and ring gear cooperation form a planetary gear system, it is inboard that first sun gear is located first planet wheelset, and the ring gear is located the first planet wheelset outside, second planet wheelset, second sun gear and ring gear cooperation form the 2nd planetary gear system, it is inboard that the second sun gear is located second planet wheelset, and the ring gear is located the second planet wheelset outside. Outer ring gear is connected with band brake. The sun gear center pin is connected with disc brake. Through the stopper that control sun gear and external tooth circled, realize the change of drive ratio to realization two -stage variable speed.

Description

A kind of two-stage change speed gear box of electric automobile
Technical field
This utility model belongs to electric vehicle engineering field, is specifically related to a kind of change speed gear box.
Background technology
Pure electric automobile commercially is the most all equipped with the variator of a single-stage, to weigh efficiency and dynamic property, such as maximum Speed, acceleration and gradability.But this makes motor be chronically at critical point operating, research shows: for pure electronic vapour Car uses the variator of multi-speed can reduce the size of electric energy electromotor, and provides the optimal balance between efficiency and dynamic characteristic, Make electromotor work under more preferable operating mode, improve economy.
The manual transmission of the multi-speed transmission used at present, such as mechanization, automatic transmission, dual-clutch transmission and nothing Level variator, is initially both aimed at the automobile with gasoline as power source.The characteristic curve of internal combustion engine shows that internal combustion engine can not be low Running under rotating speed, and the maximum output torque of electromotor drastically reduces at high speed, and this makes for IC Engine Design out Change speed gear box is mainly used to solve the two problem.But, for motor as the automobile of electromotor from the point of view of, it is achieved in speed relatively Controlled in the range of wide, is not a problem.Motor is at low speed, it is also possible to export the biggest torque.And motor speed work Make scope wide, typical range 0 to 7000rpm.
So, the variator research for electric automobile has very important meaning.
Utility model content
The purpose of this utility model is to provide the two-stage change speed gear box of a kind of electric automobile, and it has easy to use, saves electronic vapour Car vehicle body space, the advantage improving efficiency of construction.
For achieving the above object, this utility model is by the following technical solutions:
A kind of two-stage change speed gear box of electric automobile, including: first planet wheels, the second planetary gear set, ring gear, first planet Frame, the second planet carrier, the first sun gear and the second sun gear;First planet wheels are installed in the first row carrier, the second planetary gear Group is installed on the second planet carrier;First planet wheels, the first sun gear and ring gear cooperatively form first planet wheel train structure;The One sun gear is positioned at inside first planet wheels, and ring gear is positioned at outside first planet wheels;Second planetary gear set, the second sun gear The second planet circular system structure is cooperatively formed with ring gear;Second sun gear is positioned at inside the second planetary gear set, and ring gear is positioned at the second row Outside star-wheel group.
Further, the diameter of planetary gear, first sun during the diameter of planetary gear is more than the second planetary gear set in first planet wheels The diameter of wheel is less than the diameter of the second sun gear.
Further, the first sun gear and the second sun gear connect by pivot pin is fixing.
Further, ring gear connects the first brake, and bearing pin connects second brake.
Further, the first brake is band brake;Second brake is disk brake.
Further, the first brake and second brake connect controller.
Further, the first row carrier is connected by bearing with first planet wheels;Second planet carrier and the second planetary gear set are passed through Bearing connects;First planet wheels include multiple planetary gear being uniformly arranged in the first row carrier;Second planetary gear set includes multiple It is uniformly arranged on the planetary gear on the second planet carrier.
Further, the first row carrier motor by power shaft connecting electric automobile;Second planet carrier is connected by output shaft The wheel of electric automobile.
Further, the two-stage change speed gear box of described a kind of electric automobile is when one grade of state, and ring gear is in on-position, and first Sun gear and the second sun gear are in non-on-position;The two-stage change speed gear box of described a kind of electric automobile when two grades of states, ring gear It is in non-on-position, the first sun gear and the second sun gear and is in on-position.
Further, the two-stage change speed gear box of described a kind of electric automobile is when one grade of state, by the first brake by ring gear system Dynamic, second brake is unclamped, then power passed to first planet wheels by the first row carrier by motor through power shaft, The torque of first planet wheels and rotating speed pass to the second planetary gear set by the first sun gear and the second sun gear not being braked, Torque and rotating speed are passed to the second planet carrier by the second planetary gear set, and rotating speed and torque are passed to car by output shaft by the second planet carrier Wheel;The two-stage change speed gear box of described a kind of electric automobile is when two grades of states, by second brake to the first sun gear and second sun Wheel is braked, the first releasing of brake of ring gear, and the power of motor passes to the first row by power shaft and the first row carrier Star-wheel group, first planet wheels transmit torque to the second planetary gear set by ring gear, and torque and rotating speed are led to by the second planetary gear set Cross the second planet carrier and output shaft passes to wheel.
This utility model has following beneficial effect: compare prior art, and this utility model is by a row redesigned Star gear train achieves gear during gearshift and is made without separating and combining, it is only necessary to needing external toothing and sun gear The gear wanted is braked respectively, the stable transition of realization at that moment like this will interrupted at shift process medium power, no Have the biggest impact to occur, make shift process more comfortable, it is ensured that the comfortableness of electric automobile.The change speed gear box of two-stage speed governing is permissible Allow motor be under optimal working condition, thus improve the work efficiency of whole electric automobile, the use time of the battery of raising, The service life of the electromotor also improved.Decreased the volume of whole change speed gear box by planetary gear construction, thus this change speed gear box is joined The tightly rush property of electric automobile entirety, and light weight is conducive to, for the space that the reasonable disposition offer of battery is bigger to electric automobile.
Further, owing to the radius of whole planetary gear train has adjustable, therefore, it can obtain according to design requirement The gear ratio needed.Thus improve efficiency.
Further, owing to whole system does not has hydraulic structure, thus decrease the volume of drive system, take up room less, Thus leave sufficient space to battery.
Accompanying drawing explanation
Fig. 1 is the structural representation of the two-stage change speed gear box of a kind of electric automobile of this utility model;
Fig. 2 is schematic diagram of the present utility model;
Fig. 3 is one grade of power transmission line figure;
Fig. 4 is two gear power transmission line figures.
Detailed description of the invention
Below in conjunction with the accompanying drawings, this utility model is described in further detail.
Seeing Fig. 1~3, the two-stage change speed gear box of a kind of electric automobile of utility model, including sun gear 6, this sun gear 6 is by front and back two Individual the first sun gear varied in size and the second sun gear are linked together by pivot pin 11;Also include a ring gear 3, it Outside is provided with the pulley groove 12 for connecting belt wheel brake;Also include first planet wheels the 4, second planetary gear set 5, One planet carrier the 10, second planet carrier 9, band brake 13, disk brake 14, power shaft 2 and output shaft 7.
Power shaft 2 left end is connected with the motor 1 of automobile, and right-hand member is connected with the first row carrier 10;Output shaft left end and second Planet carrier 9 is connected, and right-hand member is connected with wheel 8.
The first row carrier 10 is connected by bearing with three planetary gears of first planet wheels 4;Second planet carrier 9 and the second planet Three planetary gears of wheels 5 are connected by bearing;First planet wheels 4 cooperatively form row with the first big sun gear and ring gear 3 Star wheel series structure;Second planetary gear set 5 cooperatively forms planet circular system structure with the second little sun gear and ring gear 3;Ring gear 3 In first planet wheels 4 and the outside of the second planetary gear set 5, the first sun gear of sun gear 6 and the second sun gear are respectively One planetary gear set 4 and the inner side of the second planetary gear set 5.Ring gear 3 is connected by belt wheel with band brake 13.
Sun gear connects pivot pin 11 and is connected with disk brake 14.Belt wheel brake 13 and disk brake 14 respectively with control Device processed is connected.
Work process: Fig. 3 and Fig. 4 is shown that the power drive system of the electric automobile of the two-speed variator that assembling is recommended Schematic diagram.As shown in schematic diagram, when needs one keep off when, now by band brake 13, ring gear 3 can be braked, Being unclamped by disk brake 14 (sun gear brake), power transmission line is as it is shown on figure 3, by motor 1 through power shaft 2 Then first planet wheels 4, the torque of first planet wheels 4 and rotating speed are passed to by not made by the first row carrier 10 Dynamic sun gear passes to the second planetary gear set 5, and torque and rotating speed are passed to the second planet carrier 9 by the second planetary gear set 5, and second Rotating speed and torque are passed to wheel 8 by output shaft 7 by planet carrier 9.When needs second gear when, now by disc type brake Sun gear 6 is braked by device 14, the releasing of brake of ring gear 3, and the power of motor 1 passes through power shaft 2 and the first row Carrier passes 10 and passs first planet wheels 4, and first planet wheels 4 transmit torque to the second planetary gear set 5 by ring gear 3, Torque and rotating speed are passed to wheel 8 by the second planet carrier 9 and output shaft 7 by the second planetary gear set 5, can be by planetary gear Different gear ratios is realized with the control for brake of gear ring.

Claims (9)

1. the two-stage change speed gear box of an electric automobile, it is characterised in that including: first planet wheels, the second planetary gear set, interior Gear ring, the first row carrier, the second planet carrier, the first sun gear and the second sun gear;
First planet wheels are installed in the first row carrier, and the second planetary gear set is installed on the second planet carrier;
First planet wheels, the first sun gear and ring gear cooperatively form first planet wheel train structure;First sun gear is positioned at first Inside planetary gear set, ring gear is positioned at outside first planet wheels;
Second planetary gear set, the second sun gear and ring gear cooperatively form the second planet circular system structure;Second sun gear is positioned at second Inside planetary gear set, ring gear is positioned at outside the second planetary gear set.
The two-stage change speed gear box of a kind of electric automobile the most according to claim 1, it is characterised in that row in first planet wheels The diameter of star-wheel is more than the diameter of planetary gear in the second planetary gear set, and the diameter of the first sun gear is less than the diameter of the second sun gear.
The two-stage change speed gear box of a kind of electric automobile the most according to claim 1, it is characterised in that the first sun gear and second Sun gear connects by pivot pin is fixing.
The two-stage change speed gear box of a kind of electric automobile the most according to claim 3, it is characterised in that ring gear connects the first system Dynamic device, bearing pin connects second brake.
The two-stage change speed gear box of a kind of electric automobile the most according to claim 4, it is characterised in that the first brake is belt Brake;Second brake is disk brake.
The two-stage change speed gear box of a kind of electric automobile the most according to claim 4, it is characterised in that the first brake and second Brake connects controller.
The two-stage change speed gear box of a kind of electric automobile the most according to claim 1, it is characterised in that the first row carrier and first Planetary gear set is connected by bearing;Second planet carrier and the second planetary gear set are connected by bearing;First planet wheels include multiple all The even planetary gear being arranged in the first row carrier;Second planetary gear set includes multiple planetary gear being uniformly arranged on the second planet carrier.
8. according to the two-stage change speed gear box of a kind of electric automobile described in claim 4 or 5, it is characterised in that the first row carrier is led to Cross the motor of power shaft connecting electric automobile;Second planet carrier wheel by output shaft connecting electric automobile.
The two-stage change speed gear box of a kind of electric automobile the most according to claim 1, it is characterised in that described a kind of electric automobile Two-stage change speed gear box when one grade of state, ring gear is in on-position, and the first sun gear and the second sun gear are in non-on-position; The two-stage change speed gear box of described a kind of electric automobile is when two grades of states, and ring gear is in non-on-position, and the first sun gear and second is too Sun wheel is in on-position.
CN201620335081.5U 2016-04-20 2016-04-20 Electric automobile's two -stage gearbox Expired - Fee Related CN205534057U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620335081.5U CN205534057U (en) 2016-04-20 2016-04-20 Electric automobile's two -stage gearbox

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620335081.5U CN205534057U (en) 2016-04-20 2016-04-20 Electric automobile's two -stage gearbox

Publications (1)

Publication Number Publication Date
CN205534057U true CN205534057U (en) 2016-08-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620335081.5U Expired - Fee Related CN205534057U (en) 2016-04-20 2016-04-20 Electric automobile's two -stage gearbox

Country Status (1)

Country Link
CN (1) CN205534057U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105736654A (en) * 2016-04-20 2016-07-06 长安大学 Two-stage gearbox of electric vehicle
CN108999937A (en) * 2018-09-18 2018-12-14 宿迁学院 A kind of multi-speed output decelerator for motor compressor system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105736654A (en) * 2016-04-20 2016-07-06 长安大学 Two-stage gearbox of electric vehicle
CN108999937A (en) * 2018-09-18 2018-12-14 宿迁学院 A kind of multi-speed output decelerator for motor compressor system
CN108999937B (en) * 2018-09-18 2020-04-10 宿迁学院 Multi-speed output speed reducer for electric compressor system

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160831

Termination date: 20170420