Self-Balancing Skateboard Control and Secure Charging Interface
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Solution Overview
Problem
Existing self-stabilizing electric vehicles lack efficient mechanical, electronic control, and charging systems, particularly in self-balancing tiltable skateboards.
Innovation Solution
The development of a self-balancing electric vehicle with a board configuration that includes a frame, deck portions for foot placement, a wheel assembly, a motor assembly powered by a rechargeable battery, an electronic controller for orientation-based propulsion, and a battery charging system with an identification signal pin for secure charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a battery charging system is added to the self-balancing electric vehicle, then charging capability is improved, but device complexity increases
Solution Approach 1:
The charging port is integrated into the electronic controller housing, with the ID pin nested within the controller assembly. This nesting approach allows the charging system to be incorporated into the existing vehicle structure without adding separate external charging components, thereby improving charging capability while minimizing increases in device complexity
2Reliability
If an identification signal pin is added to the charging port, then charging security is improved, but device complexity increases
Solution Approach 1:
The ID pin is combined with the charging port assembly, forming an integrated charging interface. This merging of the identification function with the power charging function allows the system to verify charger authenticity and enable secure charging without requiring separate identification hardware, thus improving charging security while avoiding additional complexity
3Ease of operation
If electronic control with orientation sensing is implemented, then user control is improved, but device complexity increases
Solution Approach 1:
The electronic controller automatically senses board orientation using onboard sensors and autonomously controls motor propulsion based on the detected orientation. This self-service approach eliminates the need for manual controls or complex user interfaces, providing intuitive user control through automatic response to rider posture while managing system complexity through automated decision-making logic
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 solution provides enhanced stability, improved user control, and secure charging capabilities, ensuring efficient and safe operation of the self-balancing electric vehicle.
Implementation Method 1
a motor assembly powered by a rechargeable battery and configured to rotate the wheel about the axle to propel the vehicle
Implementation Method 2
an electronic controller configured to receive orientation information of the board measured by at least one sensor and to cause the motor assembly to propel the vehicle based on the orientation information
Implementation Method 3
coupling an alternating current (AC) to direct current (DC) adapter to a charging port of an electric vehicle; applying a charging voltage to a first conductor of the charging port, using the AC to DC adapter
Data Source
AI summary
A self-propelled, one-wheeled vehicle may include a board having two deck portions each having a concave front footpad configured to receive a foot of a rider, and a wheel assembly disposed between the deck portions. The concave front footpad has a rider detection sensor in the form of a membrane switch conforming to the shape of the footpad (e.g., facilitated by one or more slots formed in the membrane switch). A motor assembly drives the vehicle in response to board orientation and rider detection information. The vehicle may have a secondary battery chargeable via a three-pin charging port including an input pin, a ground pin, and an identification pin configured to receive an expected identification signal from an external charging circuit.