Power Storage Device for Power-Assisted Bicycles
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Solution Overview
Problem
Power-assisted bicycles without pre-installed control functions face difficulties in performing driving power control, especially in specific areas where caution is required, such as near intersections or where other moving objects are present.
Innovation Solution
A power storage device system that includes a storage battery, a mounting unit, an output controller, and a controller that reduces driving power when the bicycle is within a particular area, using intermittent power output or pulse waveform control to alert the user and conserve energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the motor-driven moving object is equipped with pre-installed control functions, then the control function can be performed, but the device complexity and cost increase
Solution Approach 1:
The power storage device is designed to perform multiple functions: it serves as both the power source and the control unit. The controller within the power storage device determines whether the moving object is in a particular area and adjusts power output accordingly, eliminating the need for separate control systems in the moving object itself.
Solution Approach 2:
The power storage device acts as an intermediary between the environment (particular areas) and the motor-driven moving object. It receives information about location and automatically adjusts power supply without requiring the moving object to have its own sensing and control capabilities.
2Productivity
If the power storage device continuously outputs driving power, then the productivity is improved, but the loss of energy increases
Solution Approach 1:
The power storage device outputs driving power periodically rather than continuously. When the moving object is in a particular area, the controller reduces or stops power output temporarily, creating periodic on-off cycles that conserve energy while maintaining overall productivity.
Solution Approach 2:
The system applies partial action by reducing power output only when necessary (in particular areas) rather than maintaining full power continuously. This partial reduction in power delivery during specific conditions achieves energy conservation without significantly impacting overall productivity.
3Reliability
If the power storage device reduces driving power in particular areas, then the safety is improved, but the productivity decreases
Solution Approach 1:
The system takes preliminary anti-action by reducing power output before a potential safety issue occurs. When the controller detects that the moving object is entering a particular area, it proactively reduces power to prevent collisions or safety incidents, rather than reacting after a problem occurs.
Data Source
AI summary
A power storage device includes a storage battery, a mounting unit that detachably mounts the power storage device on a motor-driven moving object, an output controller that controls output of driving power from the storage battery to the motor-driven moving object, and a controller that, when the motor-driven moving object is within a particular area, causes the output controller to reduce the driving power supplied from the power storage device to the motor-driven moving object compared to the driving power when the motor-driven moving object is outside the particular area.