CN203686106U

CN203686106U - Two-speed automatic transmission of electric vehicle

Info

Publication number: CN203686106U
Application number: CN201420052628.1U
Authority: CN
Inventors: 胡如现; 胡悦; 胡金凤
Original assignee: BEIJING YANGMINGCHENG TECHNOLOGY Co Ltd
Current assignee: BEIJING YANGMINGCHENG TECHNOLOGY Co Ltd
Priority date: 2014-01-27
Filing date: 2014-01-27
Publication date: 2014-07-02
Anticipated expiration: 2024-01-27

Abstract

The utility model relates to a two-speed automatic transmission of an electric vehicle. When the two-speed automatic transmission is shifted to a fist gear, a controller enables a first gear magnetic valve, high-pressure oil flows into a first gear piston through the first gear magnetic valve, and power is output through an input shaft, a clutch framework, a driving piece, a driven piece, a first gear driving gear, an intermediate shaft assembly and a differential assembly. When the two-speed automatic transmission is shifted to a second gear, the controller enables the first gear magnetic valve to be disconnected, a second gear magnetic valve is enabled, the high-pressure oil flows into a second gear piston through the second gear magnetic valve, and the power is output through the input shaft, the clutch framework, the driving piece, the driven piece, a second gear driving gear, the intermediate shaft assembly and the differential assembly. When the controller breaks down, the power can be output through the input shaft, a unidirectional needle bearing, the first gear driving gear, the intermediate shaft assembly and the differential assembly for preventing the electric vehicle from breaking down. The service life of an electric vehicle power system is prolonged, and the two-speed automatic transmission is ingenious in design, simple in structure, convenient to use and suitable for large-scale popularization and application.

Description

Electric motor car two-speed automatic transmission

Technical field

The utility model relates to a kind of electric motor car two-speed automatic transmission, belongs to drive system of electric motor vehicle technical field.

Background technique

Along with the rise of fuel price and the continuous enhancing of people's environmental consciousness, a kind of reproducible clean alternative energy source is all being sought in countries in the world; Electric vehicle is because it has " zero " discharge characteristics, the non-constant width of operating range of inverter-fed traction motor simultaneously, permanent moment of torsion when its low speed, permanent power when high speed, the needs that are applicable to very much vehicle operating, therefore Development of EV has become the focus of the outer China Automobile Industry of Present Domestic; But present electric vehicle adopts fixed speed ratio retarder more, although the kind of drive is simple, low cost of manufacture, maintenance expense is low, but driving motor for electric automobile, in most cases in the very low region of efficiency, can be wasted the valuable energy content of battery like this, continual mileage is reduced; According to the feature of travelling of electric vehicle, drive motor should provide higher instantaneous torque at Heng Zhuanjuqu, can provide the high speed that higher motion speed meets vehicle to require and accelerate climbing requirement at Heng Gongshuaiqu again, under current technical specifications, driving motor for electric automobile is difficult to meet such requirement; For high-grade electric vehicle, generally adopt clutch and conventional manual speed changer to convert gear, handle complexity, driver's labor intensity is large, and in addition, clutch and speed changer can increase electric vehicle cost greatly, are unfavorable for the miniaturization of electric vehicle; Therefore, a kind of electric motor car two-speed automatic transmission need to be provided, it is simple for structure, easy to use, can initiatively adapt to road surface according to electric automobile during traveling situation automatic switchover gear and change and drive needs, ensure that drive motor always can be operated in desirable region, improve power character and the Economy of electric vehicle, reduce the control difficulty of drive motor, reduce batteries of electric automobile capacity, greatly improve the cost performance of electric vehicle.

Model utility content

The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, a kind of electric motor car two-speed automatic transmission is provided, can initiatively adapt to road surface variation and drive needs according to electric automobile during traveling situation automatic switchover gear, the working zone of drive motor is expanded, ensure that drive motor always can be operated in desirable region, improve power character and the Economy of electric vehicle, reduce the control difficulty of drive motor, reduce batteries of electric automobile capacity, greatly improve the cost performance of electric vehicle, design ingenious, simple for structure, in reducing product cost, improve the conformity of product, be suitable for large-scale promotion application.

The utility model is achieved by the following technical solution: a kind of electric motor car two-speed automatic transmission, and it is mainly by input shaft assembly, intermediate shaft assembly, differential assembly, upper shell 10, lower shell body module composition; Input shaft assembly is made up of a gear driving gear 6, unidirectional needle bearing 5, input shaft 1, a gear piston 15, two gear pistons 17, spring support 9, rotating plate 20, driven plate 18, two gear driving gears 23; Intermediate shaft assembly is made up of a gear driven gear 41, two gear driven gears 37, jack shaft 38; Differential assembly is made up of differential gear 42, differential casing 44, bearing pin 45, planetary pinion 49, output shaft planet wheel 46; Lower shell body assembly is made up of lower shell body 22, oil pump end cap 26, oil pump drive gear 27, oil pump driven gear 28, pressure regulation steel ball 34, pressure adjusting spring 35, a gear solenoid valve 29, two gear solenoid valves 31; Motor bearings 2, input shaft oil seal 3 are arranged in the hole that upper end cap 10 is provided with; Locating stud 12 is arranged in the positioning hole that upper end cap 10, lower end cap 22 be provided with and is fastening with bolt 13; Unidirectional needle bearing 5 is arranged in the hole that a gear driving gear 6 is provided with, external diameter and gear driving gear 6 interference fit, and internal diameter and input shaft 1 are slidably matched; Thrust-bearing 7 is arranged between the pillow block that end face that a gear driving gear 6 is provided with and input shaft 1 be provided with; One gear piston 15, two gear pistons 17 are arranged in the hole that clutch skeleton 14 is provided with, and piston external diameter seal ring 16, piston inner diameter seal ring 21 are arranged in the circular groove that a gear piston 15, two gear pistons 17 be provided with; Rotating plate 20 external diameters are provided with the internal spline that external splines is provided with clutch skeleton 14 and coordinate and use snap ring 19 spacing; Driven plate 18 is provided with the external splines that internal spline and a gear driving gear 6, two gear driving gears 23 are provided with and is connected; Piston spring 11 is arranged between a gear piston 15, two gear pistons 17 and spring support 9 and uses snap ring 8 spacing; Thrust-bearing 30 is arranged between the pillow block that end face that two gear driving gears 23 are provided with and input shaft 1 be provided with; Needle bearing 33 is arranged in the hole that two gear driving gears 23 are provided with; One gear driven gear 41, two gear driven gears 37 are provided with the external splines that internal spline and jack shaft 38 be provided with and are connected; Adjusting pad 40 is arranged between two gear driven gears 37 and midship shaft bearing 39; Differential gear 42 is provided with the pillow block that seam is provided with differential casing 44 and coordinates and use bolt 43 to be fastenedly connected; Planetary pinion 49 is arranged on bearing pin 45, and bearing pin 45 two ends are connected with differential casing 44 interference, and planetary pinion 49 engages with output shaft planet wheel 46; Output shaft bearing 48 internal diameters coordinate with the pillow block that differential casing 44 is provided with, and external diameter coordinates with the bearing hole that upper shell 10, lower shell body 22 are provided with; Output shaft oil sealing 47 is arranged in the hole that upper shell 10, lower shell body 22 be provided with; Oil pump external rotor 27 is arranged in the hole that lower shell body 22 is provided with and engages with Oil pump internal rotor 28; Oil pump internal rotor 28 is provided with square hole and is provided with square shaft with input shaft 1 one end and coordinates; Seal ring 25 is arranged in the circular groove that oil pump end cap 26 is provided with, and oil pump end cap 26 coordinates with bolt 24 fastening with lower shell body 22; One gear solenoid valve 29, two gear solenoid valves 31 are arranged in the hole that oil pump end cap 26 is provided with; Seal ring 32 is arranged in the circular groove that oil pump end cap 26 is provided with; Pressure regulation steel ball 34, pressure adjusting spring 35, bolt 36 are arranged in the hole that oil pump end cap 26 is provided with; Bearing of input shaft 4, midship shaft bearing 39 are arranged in the hole that upper shell 10, lower shell body 22 be provided with.

The center of described input shaft 1 is provided with a through hole and communicates with the high-voltage oil cavity that oil pump end cap 26 is provided with, and through hole radial position and a gear driving gear 6, two gear driving gear 23 opposite positions are provided with oilhole; One gear piston 15, two gear pistons 17 and clutch skeleton 14 are provided with a gear control oilhole, two gears and control a gear that oilholes are provided with oil pump end cap 26 and control oilhole, two and keep off control oilholes and communicate.

Described clutch skeleton 14 endoporus are provided with internal spline and coordinate with the external splines that input shaft 1 is provided with.

A described gear driving gear 6 is meshed with a gear driven gear 41; Two gear driving gears 23 are meshed with two gear driven gears 37; The gear that jack shaft 38 is provided with is meshed with differential gear 42.

The utility model beneficial effect is compared with prior art, powerdriven long service life, bearing capacity are strong, gearshift fast response time.

Brief description of the drawings

Fig. 1 is sectional view of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the technical solution of the utility model is described in detail: be used in a kind of electric motor car two-speed automatic transmission on electric vehicle, it is mainly by input shaft assembly, intermediate shaft assembly, differential assembly, upper shell 10, lower shell body module composition; Input shaft assembly is made up of a gear driving gear 6, unidirectional needle bearing 5, input shaft 1, a gear piston 15, two gear pistons 17, spring support 9, rotating plate 20, driven plate 18, two gear driving gears 23; Intermediate shaft assembly is made up of a gear driven gear 41, two gear driven gears 37, jack shaft 38; Differential assembly is made up of differential gear 42, differential casing 44, bearing pin 45, planetary pinion 49, output shaft planet wheel 46; Lower shell body assembly is made up of lower shell body 22, oil pump end cap 26, oil pump drive gear 27, oil pump driven gear 28, pressure regulation steel ball 34, pressure adjusting spring 35, a gear solenoid valve 29, two gear solenoid valves 31; Motor bearings 2, input shaft oil seal 3 are arranged in the hole that upper end cap 10 is provided with; Locating stud 12 is arranged in the positioning hole that upper end cap 10, lower end cap 22 be provided with and is fastening with bolt 13; Unidirectional needle bearing 5 is arranged in the hole that a gear driving gear 6 is provided with, external diameter and gear driving gear 6 interference fit, and internal diameter and input shaft 1 are slidably matched; Thrust-bearing 7 is arranged between the pillow block that end face that a gear driving gear 6 is provided with and input shaft 1 be provided with; One gear piston 15, two gear pistons 17 are arranged in the hole that clutch skeleton 14 is provided with, and piston external diameter seal ring 16, piston inner diameter seal ring 21 are arranged in the circular groove that a gear piston 15, two gear pistons 17 be provided with; Rotating plate 20 external diameters are provided with the internal spline that external splines is provided with clutch skeleton 14 and coordinate and use snap ring 19 spacing; Driven plate 18 is provided with the external splines that internal spline and a gear driving gear 6, two gear driving gears 23 are provided with and is connected; Piston spring 11 is arranged between a gear piston 15, two gear pistons 17 and spring support 9 and uses snap ring 8 spacing; Thrust-bearing 30 is arranged between the pillow block that end face that two gear driving gears 23 are provided with and input shaft 1 be provided with; Needle bearing 33 is arranged in the hole that two gear driving gears 23 are provided with; One gear driven gear 41, two gear driven gears 37 are provided with the external splines that internal spline and jack shaft 38 be provided with and are connected; Adjusting pad 40 is arranged between two gear driven gears 37 and midship shaft bearing 39; Differential gear 42 is provided with the pillow block that seam is provided with differential casing 44 and coordinates and use bolt 43 to be fastenedly connected; Planetary pinion 49 is arranged on bearing pin 45, and bearing pin 45 two ends are connected with differential casing 44 interference, and planetary pinion 49 engages with output shaft planet wheel 46; Output shaft bearing 48 internal diameters coordinate with the pillow block that differential casing 44 is provided with, and external diameter coordinates with the bearing hole that upper shell 10, lower shell body 22 are provided with; Output shaft oil sealing 47 is arranged in the hole that upper shell 10, lower shell body 22 be provided with; Oil pump external rotor 27 is arranged in the hole that lower shell body 22 is provided with and engages with Oil pump internal rotor 28; Oil pump internal rotor 28 is provided with square hole and is provided with square shaft with input shaft 1 one end and coordinates; Seal ring 25 is arranged in the circular groove that oil pump end cap 26 is provided with, and oil feed pump end cap 26 seals, and prevents that high pressure oil from revealing, and oil pump end cap 26 coordinates use bolt 24 fastening with lower shell body 22; One gear solenoid valve 29, two gear solenoid valves 31 are arranged in the hole that oil pump end cap 26 is provided with; Seal ring 32 is arranged in the circular groove that oil pump end cap 26 is provided with; Pressure regulation steel ball 34, pressure adjusting spring 35, bolt 36 are arranged in the hole that oil pump end cap 26 is provided with, and when oil pressure is during higher than setting value, high pressure oil backs down steel ball pressure release, makes pressure remain on a stability range; Bearing of input shaft 4, midship shaft bearing 39 are arranged in the hole that upper shell 10, lower shell body 22 be provided with; The center of input shaft 1 is provided with a through hole and communicates with the high-voltage oil cavity that oil pump end cap 26 is provided with, and through hole radial position and a gear driving gear 6, two gear driving gear 23 opposite positions are provided with oilhole, make gear pressure lubrication; One gear piston 15, two gear pistons 17 and clutch skeleton 14 are provided with a gear control oilhole, two gears and control a gear that oilholes are provided with oil pump end cap 26 and control oilhole, two and keep off control oilholes and communicate; Clutch skeleton 14 endoporus are provided with internal spline and coordinate with the external splines that input shaft 1 is provided with; A described gear driving gear 6 is meshed with a gear driven gear 41; Two gear driving gears 23 are meshed with two gear driven gears 37; The gear that jack shaft 38 is provided with is meshed with differential gear 42.

Controller switches gear according to road surface situation, when being a gear or while reversing gear, controller enables gear solenoid valve 29 energisings, high pressure oil enters a gear piston 15 by a gear solenoid valve 29 from a gear control oilhole, and power is by input shaft 1, clutch skeleton 14, rotating plate 20, driven plate 18, a gear driving gear 6, intermediate shaft assembly, differential assembly output; In the time need to being made as two gears along with the speed of a motor vehicle, controller disconnects a gear solenoid valve 29, and the high pressure oil of a gear piston 15 flows in casing by the draining hole of a gear solenoid valve 29, and a gear piston 15 return under the effect of piston spring 11 is removed a gear power; Control two gear solenoid valves 31 enables simultaneously, high pressure oil enters two gear pistons 17 by two gear solenoid valves 31 from two gear control oilholes, and power is by input shaft 1, clutch skeleton 14, rotating plate 20, driven plate 18, two gear driving gears 23, intermediate shaft assembly, differential assembly output; When controller breaks down, prevent that electric motor car from casting anchor, power also can pass through input shaft 1, unidirectional needle bearing 5, a gear driving gear 6, intermediate shaft assembly, differential assembly output, ensures that vehicle, in the home mode of travelling, improves reliability; The utility model extends the working life of power system of electric automobile; Simple installation, so far reaches the purpose of this utility model, has implemented.

Finally explanation: above embodiment is only unrestricted in order to the technical solution of the utility model to be described.With reference to preferred embodiment, the utility model is elaborated, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, do not depart from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of claim scope of the present utility model.

Claims

1. an electric motor car two-speed automatic transmission, it is mainly by input shaft assembly, intermediate shaft assembly, differential assembly, upper shell, lower shell body module composition; Input shaft assembly is made up of a gear driving gear, unidirectional needle bearing, input shaft, a gear piston, two gear pistons, spring support, rotating plate, driven plate, two gear driving gears; Intermediate shaft assembly is made up of a gear driven gear, two gear driven gears, jack shaft; Differential assembly is made up of differential gear, differential casing, bearing pin, planetary pinion, output shaft planet wheel; Lower shell body assembly is made up of lower shell body, oil pump end cap, oil pump drive gear, oil pump driven gear, pressure regulation steel ball, pressure adjusting spring, a gear solenoid valve, two gear solenoid valves; It is characterized in that: motor bearings, input shaft oil seal are arranged in the hole that upper end cap is provided with; Locating stud is arranged in the positioning hole that upper end cap, lower end cap be provided with and by bolton; Unidirectional needle bearing is arranged in the hole that a gear driving gear is provided with, external diameter and a gear driving gear interference fit, and internal diameter and input shaft are slidably matched; Thrust-bearing is arranged between the pillow block that end face that a gear driving gear is provided with and input shaft be provided with; One gear piston, two gear pistons are arranged in the hole that clutch skeleton is provided with, and piston external diameter seal ring, piston inner diameter seal ring are arranged in the circular groove that a gear piston, two gear pistons be provided with; Rotating plate external diameter is provided with the internal spline that external splines is provided with clutch skeleton and coordinates and use snap ring spacing; Driven plate is provided with internal spline and a gear driving gear, two external spliness that are provided with of gear driving gears are connected; Piston spring is arranged between a gear piston, two gear pistons and spring support and uses snap ring spacing; Thrust-bearing is arranged between the pillow block that end face that two gear driving gears are provided with and input shaft be provided with; Needle bearing is arranged in the hole that two gear driving gears are provided with; One gear driven gear, two gear driven gears are provided with the external splines that internal spline and jack shaft be provided with and are connected; Adjusting pad is arranged between two gear driven gears and midship shaft bearing; Differential gear is provided with the pillow block that seam is provided with differential casing and coordinates and be bolted connection; Planetary pinion is arranged on bearing pin, and bearing pin two ends are connected with differential casing interference, and planetary pinion engages with output shaft planet wheel; The pillow block that output shaft bearing internal diameter is provided with differential casing coordinates, and external diameter coordinates with the bearing hole that upper shell, lower shell body are provided with; Output shaft oil sealing is arranged in the hole that upper shell, lower shell body be provided with; Oil pump external rotor is arranged in the hole that lower shell body is provided with and engages with Oil pump internal rotor; Oil pump internal rotor is provided with square hole and is provided with square shaft with input shaft one end and coordinates; Seal ring is arranged in the circular groove that oil pump end cap is provided with, and oil pump end cap coordinates with lower shell body by bolton; One gear solenoid valve, two gear solenoid valves are arranged in the hole that oil pump end cap is provided with; Seal ring is arranged in the circular groove that oil pump end cap is provided with; Pressure regulation steel ball, pressure adjusting spring, bolt are arranged in the hole that oil pump end cap is provided with; Bearing of input shaft, midship shaft bearing are arranged in the hole that upper shell, lower shell body be provided with.

2. electric motor car two-speed automatic transmission according to claim 1, it is characterized in that: the center of described input shaft is provided with the high-voltage oil cavity that a through hole is provided with oil pump end cap and communicates, through hole radial position and a gear driving gear, two gear driving gear opposite positions are provided with oilhole; One gear piston, two gear pistons and clutch skeletons are provided with a gear control oilhole, two gears and control a gear that oilholes are provided with oil pump end cap and control oilhole, two and keep off control oilholes and communicate.

3. electric motor car two-speed automatic transmission according to claim 1, is characterized in that: described clutch skeleton endoporus is provided with the external splines that internal spline is provided with input shaft and coordinates.

4. electric motor car two-speed automatic transmission according to claim 1, is characterized in that: a described gear driving gear is meshed with a gear driven gear; Two gear driving gears are meshed with two gear driven gears; The gear that jack shaft is provided with is meshed with differential gear.