Power Management Control Section for Low Battery Data Transfer
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Solution Overview
Problem
Electronic devices face challenges in power management when operating with low battery levels, leading to potential shutdowns during data transfer or reception from external devices, especially when AC power is unavailable.
Innovation Solution
An electronic device with a control section that manages power supply conditions based on battery level and external power values, enabling a mode of operation that prolongs device usage and prevents unexpected shutdowns by adjusting power usage from either the battery or an external source.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the device operates with low battery levels to extend usage time, then the operating duration is improved, but the reliability deteriorates due to potential shutdowns during data transfer
Solution Approach 1:
The control section continuously monitors battery level and dynamically adjusts power management parameters based on real-time feedback. When battery level drops below a threshold during data transfer, the system automatically reduces power consumption or suspends non-critical operations to prevent shutdown, thereby maintaining reliability while extending operating duration.
Solution Approach 2:
The power management system transitions from static power allocation to dynamic adjustment based on operational state. The control section modifies power supply parameters, clock frequencies, and interface activation states in real-time according to battery level and current operation, enabling the device to adapt power consumption to extend operation while preventing critical failures.
2Adaptability or versatility
If the device accepts data transfer requests from external devices, then the functionality is improved, but the power consumption increases, reducing operating duration
Solution Approach 1:
The control section implements selective activation of hardware components during data transfer operations. Instead of powering all interfaces and processing units simultaneously, the system activates only the minimum necessary components for the current data transfer task, reducing overall power consumption while maintaining full data transfer functionality.
Solution Approach 2:
The system dynamically adjusts operational parameters such as USB bus power acceptance thresholds, data transfer rates, and interface activation states based on battery level. When battery power is sufficient, higher data transfer rates and additional interface functions are enabled; when battery power is low, the system reduces data transfer activity and disables non-essential interfaces, extending operating duration while preserving core functionality.
3Power
If the device uses AC power supply for operation, then the power availability is improved, but the adaptability deteriorates when AC power is unavailable
Solution Approach 1:
The power management system is designed to universally accept multiple power sources including AC adapter power, USB bus power, and internal battery power. The control section implements a priority-based power source selection algorithm that automatically switches between power sources based on availability and operational requirements, enabling the device to function adaptively regardless of which power source is present.
Solution Approach 2:
The control section acts as an intermediary between multiple power sources and the various device components. It monitors the status of each power source, manages power distribution priorities, and coordinates switching between power sources to ensure continuous operation. This intermediary function enables seamless transition between AC power and battery power, enhancing power source adaptability.
Data Source
AI summary
The present invention provides an electronic device that can operate as long as possible even if the battery level is low and that can avoid an unexpected shutdown as much of the time as possible while data is being transmitted to, or received from, an external device.The electronic device has a particular mode of operation in which the electronic device is connected to an external device and can accept a request to read and/or write information sent by the external device. The electronic device includes: a battery; an interface, which is connected to the external device so as to get power from the external device and which accepts the request sent by the external device; and a control section for changing conditions for enabling that particular mode of operation according to a supply value, which is at least one of the values of current and voltage supplied by the external device, and a value representing a level of the battery.