Bike Power Supply Circuit for Selective Solar Battery Charging
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Solution Overview
Problem
Existing human-powered vehicles with electric power sources struggle to efficiently utilize electricity from photovoltaic units and maintain stability in their power-supplying systems.
Innovation Solution
A power-supplying system for human-powered vehicles that includes an electronic controller circuitry to selectively charge one of two electric power sources using electricity from a photovoltaic unit, allowing for flexible charging states and independent operation of the controller circuitry, even when one power source is low.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the electronic controller circuitry is powered by the first electric power source, then the system structure is simplified, but the stability of the power-supplying system deteriorates when the first electric power source is discharged
Solution Approach 1:
The second electric power source acts as an intermediary power supply for the electronic controller circuitry. When the first electric power source is discharged, the second electric power source steps in to maintain stable operation of the controller, preventing system failure without requiring complex backup mechanisms.
Solution Approach 2:
The system changes the power supply parameter by switching from the first electric power source to the second electric power source when the first source is discharged. This parameter change maintains controller operation stability while avoiding the need for overly complex system architecture.
2Productivity
If the electronic controller circuitry charges both electric power sources simultaneously, then the utilization efficiency of photovoltaic electricity is improved, but the device complexity increases
Solution Approach 1:
The charging system dynamically adjusts its operation based on the state of the first electric power source. When the first source is discharged, the controller automatically switches to charging only the second source. This dynamic adaptation maximizes photovoltaic electricity utilization efficiency without requiring complex simultaneous charging management.
3Device complexity
If the electronic controller circuitry is powered by the first electric power source, then the device complexity is reduced, but the adaptability of the power-supplying system deteriorates
Solution Approach 1:
The second electric power source serves multiple functions: it acts as a backup power supply for the electronic controller when the first source is discharged, and it can be charged by photovoltaic electricity when the first source is fully charged. This multi-functionality enhances system adaptability without significantly increasing device complexity.
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 system efficiently utilizes electricity from photovoltaic units by allowing separate charging of power sources based on conditions, improving stability and flexibility in power management.
Implementation Method 1
A human-powered vehicle includes an electric device powered by electricity supplied from an electric power supply. The human-powered vehicle includes a photovoltaic module to generate electricity from light energy.
Data Source
AI summary
A power-supplying system of a human-powered vehicle comprises a first electric power source and electronic controller circuitry. The first electric power source is electrically connectable with a photovoltaic unit to store electricity supplied from the photovoltaic unit. The electronic controller circuitry is electrically connectable with the photovoltaic unit and a second electric power source. The electronic controller circuitry is configured to charge the second electric power source in a first state using electricity which is supplied from the photovoltaic unit without passing through the first electric power source. The electronic controller circuitry is configured to charge the first electric power source in a second state using electricity supplied from the photovoltaic unit instead of charging the second electric power source.