Mobile Device Power Switching for Extended Usage
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Solution Overview
Problem
Mobile devices with built-in batteries face portability issues when the battery is completely discharged, as they require external power sources for operation, limiting their use without a commercial power supply.
Innovation Solution
A mobile device configuration that includes a first battery for powering the device and a stopping unit to switch power supply from a built-in battery to an attachable/detachable second battery when the second battery's voltage is sufficient, ensuring continuous operation without relying on external power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a built-in battery is used to power the mobile device, then the device has portability and can operate without external power sources, but when the battery is completely discharged, the device cannot operate and portability is impeded
Solution Approach 1:
The power supply unit performs preliminary action by proactively switching from the built-in battery to the attachable/detachable battery before the built-in battery is completely discharged. This prevents the device from entering a non-operational state and ensures continuous power supply, thereby maintaining both extended usage time and operational reliability
2Adaptability or versatility
If the device relies on a single built-in battery, then the structure is simple, but the device cannot operate when the battery is discharged and requires external power sources
Solution Approach 1:
The power supply system achieves universality by incorporating both a built-in battery and an attachable/detachable battery, allowing the device to function with either power source. The power supply unit intelligently manages both batteries, enabling the system to adapt to different usage scenarios while maintaining operational continuity, thus improving power supply adaptability without significantly increasing complexity
Data Source
AI summary
A mobile device includes a drive element, a first battery configured to supply power to the drive element, and a stopping unit stopping supplying of power to the first battery when a voltage of an attachable/detachable second battery configured to supply power to the drive element is greater than or equal to a first voltage for driving the drive element.