E-Bike Control Circuit Battery Status Display
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Solution Overview
Problem
Electrically power assisted bicycles face issues where the operation panel's time display resets when the built-in battery's capacity is insufficient, leading to confusion between a malfunction and low battery capacity, causing unnecessary repairs and misdiagnosis.
Innovation Solution
The bicycle is equipped with a control circuit that displays specific information, such as a hyphen or blinking symbols, in the time display area when the built-in battery's capacity is insufficient, distinguishing this condition from a reset or malfunction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the operation panel displays time using the built-in battery, then the time display function is maintained, but when the built-in battery capacity becomes insufficient, the time resets to initial values causing user confusion and misdiagnosis of malfunction
Solution Approach 1:
The control circuit monitors the built-in battery's remaining capacity and provides feedback by displaying specific patterns (hyphen, blinking symbols) in the time display area when capacity is insufficient. This feedback mechanism allows users to distinguish between time reset due to low battery versus actual malfunction, resolving the information loss problem.
Solution Approach 2:
The invention uses visual changes in the time display area (hyphen display, blinking symbols) to indicate different battery capacity states. These visual transformations serve as warning signals to users, enabling them to understand the battery status without confusion.
2Duration of action of stationary object
If the operation panel uses the built-in battery for timekeeping, then continuous time display is achieved, but diagnostic difficulty increases when time reset occurs due to insufficient battery capacity
Solution Approach 1:
The control circuit provides diagnostic feedback by displaying specific patterns when battery capacity is insufficient. This allows service personnel to easily detect whether time reset is caused by low battery or actual malfunction, significantly reducing diagnostic difficulty.
3Ease of operation
If the time display area shows reset time when built-in battery capacity is insufficient, then the display remains active, but user understanding and correct diagnosis become difficult
Solution Approach 1:
The invention transforms the time display area into a status indicator by displaying hyphens or blinking symbols when battery capacity is insufficient. This visual transformation communicates battery status information effectively while keeping the display active and user-friendly.
Data Source
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AI summary
An electrically power assisted bicycle 1 includes an electric motor 33; a detachable battery 36 to supply electric power to at least the electric motor 33; and an operation panel 60 including a microcontroller 62 to control display in a time display area 73 and a built-in battery 61 to supply electric power to the microcontroller 62. In a state where the detachable battery 36 is attached to the electrically power assisted bicycle 1 and the electrically power assisted bicycle 1 is in a power-on state, the microcontroller 62 is supplied with the electric power from the detachable battery 36. In the case where the electrically power assisted bicycle 1 is turned on from a power-off state in a state where a remaining capacity of the built-in battery 61 is insufficient, the microcontroller 62 displays, in the time display area 73, information indicating that the remaining capacity of the built-in battery 61 is insufficient.