Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Single planet-row two-shift automatic transmission for electric automobile

A technology of automatic transmission and single planetary row, which is applied in the direction of vehicle gearboxes, multi-ratio transmissions, transmissions, etc., can solve the problems of large volume of parallel shaft transmissions, high performance requirements of motors, unfavorable assembly, etc., and achieve improvement The effect of improving operating efficiency, reducing the shock of shifting, and increasing the service life

Inactive Publication Date: 2015-09-23
CHONGQING UNIV
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The transmission system with high-speed motor and fixed gear has the advantages of smooth operation and no power interruption. However, the single fixed gear used in existing electric vehicles is not conducive to the high-efficiency operation of the drive motor, and has high performance requirements for the motor.
In addition, the high-speed motor is equipped with a fixed gear transmission system, and its parallel shaft transmission is large in size, which is not conducive to assembly; it uses a synchronizer as a shift actuator, which will cause problems such as power interruption and shift shock. Oil leakage problems are inevitable with hydraulic clutches and brakes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Single planet-row two-shift automatic transmission for electric automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, but not for limiting the protection scope of the present invention.

[0016] As shown in the figure, a single-planetary two-speed automatic transmission for electric vehicles includes a casing 13, and the casing is provided with a driving gear 2 connected to a driving motor 1, a driven gear 9 meshing with the driving gear, and a The intermediate shaft 11 connected by the driven gear is also provided with a planetary gear mechanism on the intermediate shaft. The cage and the ring gear 7 meshed with the planetary gear, the planetary gear cage is provided with an output shaft, the clutch 4 is provided between the output shaft and the sun gear or the intermediate shaft, and the box is also provided with a Brake 6 for braking ring gear.

[...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a single planet-row two-shift automatic transmission for an electric automobile. The automatic transmission comprises a casing. The casing is internally provided with a driving gear connected to a driving motor, a driven gear engaged with the driving gear, and an intermediate shaft fixedly connected to the driven gear. The intermediate shaft is provided with a planetary gear mechanism. The planetary gear mechanism comprises a sun gear fixedly connected to the intermediate shaft, a planetary gear engaged with the sun gear, a planetary gear holder, and a gear ring engaged with the planetary gear. The planetary gear holder is provided with an output shaft, and a clutch is arranged between the output shaft and the sun gear or the intermediate shaft. The casing is also provided with a brake used for braking the tooth ring. According to the invention, the electromagnetic brake and the electromagnetic clutch are employed in the single planet-row two-shift automatic transmission, so that demands on the performance of the driving motor are reduced, the operation efficiency of the motor is improved, and the driving range of the electric automobile is increased.

Description

technical field [0001] The invention belongs to the field of transmissions, in particular to a single-planetary two-speed automatic transmission for electric vehicles. Background technique [0002] As a green and environmentally friendly new energy vehicle, electric vehicles have received more and more attention, and their product categories have become more and more abundant. The transmission system with high-speed motor and fixed gear has the advantages of smooth operation and no power interruption. However, the single fixed gear used in existing electric vehicles is not conducive to the high-efficiency operation of the drive motor, and has higher performance requirements for the motor. In addition, the high-speed motor is equipped with a fixed gear transmission system, and its parallel shaft transmission is large in size, which is not conducive to assembly; it uses a synchronizer as a shift actuator, which will cause problems such as power interruption and shift shock. O...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/44F16H57/023
CPCF16H3/44F16H57/023F16H2003/447F16H2200/0004F16H2200/0021F16H2200/20F16H2306/00F16H2700/02
Inventor 胡明辉王建文曾剑峰廖永康马香明
Owner CHONGQING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com