Slip Ring Blades for Motor Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Frictional heat generation and dust accumulation between the brush and slip ring in motors lead to thermal issues and short-circuits, which existing technologies fail to adequately address.
Innovation Solution
A slip ring design featuring a cylindrical body with protruding blades that create a centrifugal air flow, dispersing dust and heat away from the motor, incorporating a bushing magnet assembly and brush holder to enhance airflow and reduce thermal impact on internal components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a brush and slip ring are used to supply current to the rotor coil, then electrical connection is achieved, but frictional heat is generated due to scrubbing between the brush and rotating slip ring
Solution Approach 1:
The patent extracts the harmful frictional contact between brush and slip ring by replacing the traditional contactless ignition system with a Hall sensor-based electronic ignition system. The Hall sensor detects rotor position without physical contact, eliminating the brush-slip ring assembly entirely and thus eliminating frictional heat generation while maintaining electrical connection functionality.
Solution Approach 2:
The patent replaces the mechanical brush-slip ring contact system with an electronic sensing system using Hall sensors. This substitution eliminates mechanical friction and contact wear, using magnetic field detection instead of electrical contact to achieve rotor position sensing and ignition timing control.
2Reliability
If a brush and slip ring are used to supply current to the rotor coil, then electrical connection is achieved, but dust is generated inside the motor by the brush and slip ring being rotated in contact, causing short-circuits
Solution Approach 1:
The patent removes the brush-slip ring assembly that generates dust through friction and wear. By implementing a contactless Hall sensor-based ignition system, the source of dust generation is completely eliminated, preventing short-circuits while maintaining the electrical connection function through electronic sensing and control.
Solution Approach 2:
The mechanical brush-slip ring system that generates harmful dust is replaced with an electronic Hall sensor system. This substitution uses magnetic field interaction instead of mechanical contact, eliminating dust generation and associated reliability issues while achieving the same functional goal of rotor position detection and ignition control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively dissipates frictional heat and disperses dust, reducing thermal effects on motor components and preventing short-circuits by utilizing airflow generated by the rotating blades, thereby improving motor efficiency and reliability.
Implementation Method 1
a plurality of blades formed to protrude from an end of the slip ring body in a length direction of the slip ring body... as the slip ring body is rotated, air located inside each of the plurality of blades moves outside of each of the plurality of blades
Data Source
AI summary
The present invention relates to a slip ring, a motor, and a vehicle having same, the slip ring comprising: a cylindrical slip ring body; a plurality of blades formed protruding in the lengthwise direction of the slip ring body on an end portion of the slip ring body; and a brush contacting part disposed on the outer circumferential surface of the slip ring body, wherein the slip ring body and the blades are integrally formed. Accordingly, the motor, by means of the rotation of the blades, can dissipate frictional heat generated from friction between a brush and the slip ring and thus reduce the effects of heat, and can also guide and disperse airborne dust generated from friction between the brush and the slip ring to the outside.