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

Motor with mixed-flow fan for circulating inner and outer air paths

A technology of mixed-flow fan and air path, which is applied in the field of electric vehicle power drive system, can solve the problems of low peak power and overload capacity, poor low-speed heat dissipation effect, and difficult heat dissipation, and achieve high heat dissipation capacity, excellent heat dissipation ability, and heat dissipation serious effect

Active Publication Date: 2010-07-28
CRRC YONGJI ELECTRIC CO LTD
View PDF7 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems of low reliability and poor heat dissipation effect at low speed when the self-ventilated motor with low protection level is used for the traction motor of the existing urban electric vehicle; while the fully enclosed motor has the problems of large volume, heavy weight and poor heat dissipation. Problems with defects such as difficulty, peak power and low overload capacity, provide a motor with a mixed-flow fan for internal and external air circulation
There are cooling fins on the outer surface of the housing

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
  • Motor with mixed-flow fan for circulating inner and outer air paths
  • Motor with mixed-flow fan for circulating inner and outer air paths
  • Motor with mixed-flow fan for circulating inner and outer air paths

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] A motor with a mixed-flow fan for internal and external air circulation, including a casing, an end cover 5, an internal cooling system, and a rotor 11. The casing includes two flanges 1 and a frame shell 4. The surface of the frame shell 4 is axially two A pair of air holes 14 are opened at the end, an internal centrifugal fan 9 is provided on the shaft of the non-drive end of the rotor 11, a rotor air passage 8 is opened inside the iron core of the rotor 11, a mixed-flow forced cooling fan 7 is connected to the non-drive end of the motor, and the casing The base shell 4 is provided with U-shaped channel steel 13, and the U-shaped channel steel 13 is airtightly covered on the pair of air holes 14 opened in the axial direction on the surface of the machine base shell 4 to form the internal air duct 12 of the shell; There is a windshield 2, and the windshield 2 covers the U-shaped channel steel 13 and is welded between the two flanges 1 of the casing and the frame shell 4...

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 relates to a power drive system of an electric automobile, in particular to a motor with a mixed-flow fan for circulating inner and outer air paths. The invention solves the problems that the traditional electronic automobile has low reliability, heat radiation at low speed and poor effect when a self-ventilation motor is used as well as large size, difficult heat radiation and low peak powder and overload capacity when a fully-closed motor is used. The power drive system comprises an enclosure, an end cover, an inner cooling air path and a rotor; a mixed flow forced cooling fan is arranged on a non-driving end shaft of the motor; an engine seat shell of the enclosure is provided with U-shaped channel steel closely covering on paired air holes to form an enclosure inner air duct; a fan cover is arranged outside the enclosure, covers U-shaped channel steel and then is welded between two flanges form an enclosure outer air duct together with the engine seat shell; and air holes are formed on the two flanges of the enclosure as well as at the position of the motor end cover, which corresponds to the enclosure outer air duct. The device can better protect the inside of the motor from being intruded by dust and rain water and can ensure heat dissipation, smaller volume and weight requirement.

Description

technical field [0001] The invention relates to a power drive system of an electric vehicle, in particular to a traction system of the electric vehicle, in particular to a motor with a mixed-flow fan for internal and external air circulation. Background technique [0002] Electric vehicle is a new energy green vehicle that has emerged in recent years. It uses electric energy as the power source and drives the vehicle through a power traction system composed of a controller and a traction motor. Compared with traditional fuel vehicles, this kind of vehicle has the advantages of zero emission, no pollution, energy saving, consumption reduction, and environmental protection. The core of the electric vehicle is the power drive system, including the controller and the traction motor. The particularity of the electric vehicle’s operating mode, operating environment, and technical performance determines its special requirements for the traction motor, and the requirements for the i...

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): H02K9/04H02K5/18H02K5/20
Inventor 霍向飞梁培志程卫东李刚贾兆雄
Owner CRRC YONGJI ELECTRIC CO LTD
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