Two-Wheel Electric Vehicle Full Balance via Segmented Axle Design
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Solution Overview
Problem
Existing intelligent somatosensory balance electric vehicles face challenges in achieving full balance, with single-wheel vehicles lacking left-right balance and two-wheel vehicles being cumbersome for portability due to size and weight, while also emitting pollutants.
Innovation Solution
A two-wheeled electric vehicle design with wheels 3-12 cm apart, a centro-symmetric motor configuration, and a control system placing the center of gravity at the geometric center, allowing for full balance and portability, featuring in-wheel motors with Hall sensors and an adaptive footrest system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single-wheel design is used, then the vehicle is portable and has small size, but it cannot achieve left-right balance
Solution Approach 1:
The single wheel is segmented into two smaller wheels arranged side by side. This segmentation allows the vehicle to achieve left-right balance through the two-wheel configuration while maintaining a compact overall structure that preserves portability. The two wheels are positioned with their centers 3-12cm apart, creating a stable base without significantly increasing the vehicle's footprint.
2Stability of the object's composition
If a two-wheel design is used, then full balance is achieved, but the vehicle becomes cumbersome and loses portability
Solution Approach 1:
The two wheels are positioned very close together with centers 3-12cm apart, creating a localized balance mechanism that does not significantly increase the overall vehicle dimensions. This local arrangement provides full balance capability while keeping the vehicle compact enough to maintain portability. The close spacing ensures the vehicle remains maneuverable and easy to transport.
3Stability of the object's composition
If traditional two-wheel vehicles are used, then stability is improved, but they occupy more pavement space
Solution Approach 1:
Instead of arranging wheels in a traditional side-by-side configuration that increases width, the wheels are positioned with centers only 3-12cm apart, effectively utilizing the vertical and depth dimensions while minimizing horizontal footprint. This dimensional optimization allows the vehicle to achieve stable balance without occupying excessive pavement space, making it suitable for congested urban environments.
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 achieves full balance in both running and non-running states, enhancing maneuverability, energy efficiency, and stability while maintaining the portability and small size advantages of single-wheel vehicles.
Implementation Method 1
a motor (4) disposed between the first wheel (11) and the second wheel (12); wherein the first wheel (11), the second wheel (12) and the motor (4) are coaxially connected through an axle (3)
Implementation Method 2
Three Hall sensors are equidistantly arranged on a coil of the in-wheel motor with an interval of 120 degrees
Implementation Method 3
the operating principle is based on a 'dynamic stability', i.e., the vehicle body balance in the running direction is maintained by the automatic balancing ability of the electric vehicle itself; a gyroscope i.e., a somatosensory balanced system is generally provided inside the vehicle body, and the real-time condition of the vehicle body is sensed via the somatosensory balanced system
Implementation Method 4
when the foot rest is at the storage position, a magnet arranged in the foot rest can oppositely attract a magnet in the body housing for fixing the foot rest
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
An intelligent somatic full-balance electric vehicle comprises two wheels (11, 12) of a same size and a motor (4) disposed between the two wheels (11, 12), the two wheels (11, 12) being coaxially connected to the motor (4) through an axle (3); the intelligent somatic full-balance electric vehicle further comprises a control system (10) and a power supply (9); both the control system (10) and the power supply (9) are disposed inside a housing of the vehicle body and located above the wheels, or between the two wheels (11, 12); or one of the control system (10) and the power supply (9) is located between the two wheels (11, 12), and the other is located above the wheels; vertical columns (6) are separately disposed at two ends of the axle (3), and the vertical columns (6) are separately provided with pedals (5) on external sides of the wheels. Because the two coaxial wheels (11, 12) are used, the electric vehicle can implement full balance like a bicycle, and in addition, has unique advantages of a monocycle, namely, having a small size and being easy to carry.