Master-Controlled Battery Switching for Hot-Swappable Powered Devices
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Solution Overview
Problem
Existing powered devices face challenges in efficiently managing power sources, particularly in switching between internal and external batteries to ensure continuous operation without interruption, especially in devices like prosthetic arms where battery accessibility and charging are limited.
Innovation Solution
A system that includes a master controller to manage power distribution between internal and external batteries, using a combination of built-in circuits for state-of-charge measurement, a battery charger, and a holster for secure external battery attachment, allowing for seamless switching and charging between power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the device uses only an internal battery, then the device structure is simple and compact, but the operating duration is limited and cannot be extended
Solution Approach 1:
The power system is segmented into multiple independent battery units (internal battery and external batteries). Each battery can operate independently or in combination, allowing the device to extend operating duration by adding external batteries while keeping the core device structure unchanged.
Solution Approach 2:
The external batteries are designed to attach to the device in a nested configuration, where the battery compartment integrates with the device housing. This allows additional power capacity to be added without significantly increasing the overall device footprint or structural complexity.
2Duration of action of moving object
If the device switches between internal and external batteries, then the operating duration is extended, but the power management complexity increases
Solution Approach 1:
The power management system operates autonomously using a master controller that automatically monitors battery charge levels, determines power source priorities, and executes switching decisions without user intervention. The system self-manages the complexity of coordinating multiple batteries, load distribution, and charge state monitoring.
Solution Approach 2:
The system continuously monitors battery charge states, power consumption rates, and operational status through feedback loops. This real-time feedback enables the master controller to dynamically adjust power distribution and switching timing to optimize operating duration while maintaining simple user interaction.
3Duration of action of moving object
If the device uses external batteries, then the operating duration is extended, but the ease of operation decreases due to battery attachment and detachment procedures
Solution Approach 1:
External batteries are pre-charged and pre-prepared for attachment. The device and batteries feature pre-configured mechanical interfaces (magnetic attachments, snap-fit connectors, or bayonet mounts) that enable quick connection and disconnection without complex alignment or tooling, minimizing the time and effort required for battery swaps.
4Productivity
If the device continuously monitors battery capacity, then the power management is optimized, but the measurement and control complexity increases
Solution Approach 1:
The system replaces complex physical measurement methods with electrical sensing. The master controller uses voltage, current, and resistance measurements through integrated circuits to estimate battery capacity and state of charge, avoiding the need for complex mechanical or chemical analysis systems.
Data Source
AI summary
A system for powering a device is disclosed. The system includes at least one internal battery located in a device, at least one external battery connected to the device, and a master controller configured to connect either the at least one internal battery or the at least one external battery to a power bus to power the device.