Segmented In-Wheel Motor Stators for Suspension Clearance
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Solution Overview
Problem
Conventional in-wheel motors face limitations in increasing output due to size constraints, which necessitate larger wheel sizes, leading to interference with suspension systems, especially when applied to front wheels.
Innovation Solution
The design includes a motor rotor with multiple stators arranged at even intervals on its circumference, forming magnetic fields to rotate the rotor, and a motor cover with gaps to accommodate brake and suspension systems, allowing for efficient mounting in limited spaces without increasing wheel size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the size of the in-wheel motor is increased to increase output, then the output is improved, but the wheel size must be increased, causing interference with the suspension system
Solution Approach 1:
The motor stators are segmented into multiple units arranged at even intervals around the rotor circumference, creating discrete magnetic field zones. This segmentation allows the motor to generate high torque output while maintaining a compact overall structure that does not interfere with suspension system rotation.
Solution Approach 2:
The motor components are arranged in a radial configuration around the rotor, utilizing the circumferential dimension efficiently. The stators are positioned at even intervals around the rotor circumference, creating a compact radial layout that increases output without increasing the axial depth that would interfere with suspension arm rotation.
2Power
If the size of the in-wheel motor is increased to increase output, then the output is improved, but the wheel size must be increased, leading to interference with the brake system positioning
Solution Approach 1:
The motor stators are divided into multiple segmented units arranged around the rotor, allowing the motor to achieve high output in a compact form factor. This segmentation enables the brake system to be positioned reliably in the remaining space without compromising brake stability or requiring increased wheel size.
3Productivity
If the in-wheel motor is applied to a front wheel, then the driving function is achieved, but the interference between the wheel and suspension system occurs, preventing smooth rotation
Solution Approach 1:
The motor components are arranged radially around the rotor, utilizing the circumferential dimension to maximize output within the limited wheel space. This radial arrangement ensures that the motor does not encroach on the axial space required for suspension arm rotation, enabling smooth operation of front wheel suspension systems.
Solution Approach 2:
The motor stators are positioned at specific locations around the rotor circumference, creating localized magnetic field zones. This localized arrangement optimizes the motor's driving function while leaving sufficient clearance in critical areas for suspension arm movement, resolving the interference issue in front wheel applications.
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
This configuration enables stable rotation of the motor rotor, increased torque, and efficient integration of brake and suspension systems within the wheel, allowing for various suspension types and significant torque increase without size reduction.
Implementation Method 1
a plurality of motor stators installed on the circumference of the motor rotor so as to be separated from each other, and forming magnetic fields to rotate the motor rotor
Implementation Method 2
the motor stator may include an electromagnet
Implementation Method 3
The motor rotor may include a permanent magnet, and the motor stator may include an electromagnet
Implementation Method 4
forming magnetic fields to rotate the motor rotor
Data Source
AI summary
An in-wheel motor includes: a motor rotor installed inside a wheel of a vehicle; and a plurality of motor stators installed on the circumference of the motor rotor so as to be separated from each other, and forming magnetic fields to rotate the motor rotor.