Battery Power Control for Portable Devices via Workload Calculation
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Solution Overview
Problem
Portable devices face challenges in extending battery life due to limitations in battery capacity and power management, particularly with conventional dynamic voltage scaling methods that require additional components and are inefficient in reducing voltage considering battery discharge structures.
Innovation Solution
A battery power control device and method that calculates a reduced workload based on user requests for time and quality of service, allowing for shorter task performance times and idle periods to increase battery life through the 'recovery effect' of batteries, without the need for additional devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If dynamic voltage scaling (DVS) is used to extend battery available time, then power consumption is reduced, but additional components (DC-DC converter, frequency synthesizer) are required causing increased device complexity and additional power consumption
Solution Approach 1:
The patent extracts and removes the complex additional components (DC-DC converter, frequency synthesizer) from the system by adopting a different approach - using the processor's existing voltage regulation capability and software control to achieve voltage scaling without external hardware, thus reducing device complexity while maintaining power savings
Solution Approach 2:
The processor performs voltage scaling using its own integrated voltage regulation functionality and software control mechanisms, eliminating the need for separate external voltage control components. The system serves its own voltage regulation needs through self-contained resources
2Use of energy by moving object
If dynamic voltage scaling (DVS) is used to extend battery available time, then power consumption is reduced, but time delay is introduced in task execution
Solution Approach 1:
The patent implements dynamic voltage scaling through software control that can rapidly adjust voltage levels in response to task requirements, enabling flexible and adaptive voltage management that minimizes time delays while maintaining power efficiency. The dynamic adjustment capability allows the system to respond quickly to changing workload conditions
3Duration of action of stationary object
If voltage supplied to processor is reduced to extend battery life, then battery available time is extended, but quality of service may be compromised
Solution Approach 1:
The patent applies partial voltage reduction only when and where necessary, rather than uniformly reducing voltage across all operations. The software control mechanism selectively adjusts voltage levels based on specific task requirements, maintaining sufficient voltage for quality-critical operations while reducing voltage for less demanding tasks, thus preserving quality of service while extending battery life
Solution Approach 2:
The system dynamically changes voltage parameters based on real-time task requirements and battery status, adjusting voltage levels to optimize the balance between battery life extension and quality of service maintenance. This adaptive parameter adjustment ensures that voltage is reduced only to the extent necessary for battery conservation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively extends battery life by adjusting workload and task performance times, ensuring satisfactory quality of service and battery availability, while avoiding the need for additional power management components.
Implementation Method 1
a battery unit configured to supply a power for performing the task to the task performer
Data Source
AI summary
Disclosed are a battery power control device, a portable device and a method of controlling the portable device. The disclosed portable device includes a workload calculator which calculates a workload necessary to provide the specific service to the user according to at least one of time request information related to a desired time during which the specific service is provided to the user and QoS (Quality of Service) request information related to a quality of the specific service, the necessary workload being smaller than a default workload that is preset for providing the specific service; a task performer which performs a task for providing the specific service according to the necessary workload during a time that is reduced to be shorter than a task performance time according to the default workload and stop the task performance during the reduced time; and a battery unit which supplies a power for performing the task to the task performer.