Power Management Controller for Hybrid Adapter Battery Systems
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Solution Overview
Problem
Electronic devices with hybrid power designs face challenges in managing power consumption to prolong battery life and prevent sudden shutdowns, especially when using travel adapters that provide less power than standard adapters.
Innovation Solution
A power management method that adjusts the electronic device's power consumption and operating frequency based on the system voltage provided by the power adapter, using a controller and processor to determine whether to reset power consumption and control the operating frequency, ensuring the device operates efficiently and avoids shutdowns even with travel adapters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electronic device uses a travel adapter that provides less power than standard adapters, then the device can be more portable and versatile, but the device may shut down suddenly because the adapter power is insufficient
Solution Approach 1:
The system dynamically changes the power consumption parameters of the processor based on the detected adapter power level. When a travel adapter is detected, the processor adjusts its operating parameters to consume less power, ensuring the available adapter power is sufficient and preventing sudden shutdowns while maintaining portability
Solution Approach 2:
The power management system continuously monitors the adapter power level and dynamically adjusts the processor's power consumption in real-time. This dynamic adaptation allows the device to maintain reliable operation with varying adapter powers, resolving the contradiction between portability and shutdown prevention
2Productivity
If the electronic device operates at high power consumption to maintain normal performance, then the device provides better user experience, but the battery drains faster and cycle life is reduced
Solution Approach 1:
The system changes the processor's operating parameters based on battery charge level and adapter power availability. When battery charge is low or adapter power is limited, the processor automatically adjusts to lower power consumption modes, extending battery cycle life while maintaining acceptable performance
Solution Approach 2:
The power management system continuously monitors battery charge level and adapter power output, using this feedback to dynamically adjust processor power consumption. This closed-loop control optimizes the balance between operation performance and battery longevity, preventing excessive discharge that would reduce cycle life
3Reliability
If the electronic device resets power consumption to match adapter power output, then the device avoids shutdown and maintains stable operation, but the processor operating frequency must be reduced
Solution Approach 1:
The system changes multiple parameters simultaneously including both power consumption and processor operating frequency to match the available adapter power. This coordinated parameter adjustment maintains stable operation while optimizing the performance-power trade-off
Solution Approach 2:
Instead of completely reducing to minimum power levels, the system applies partial power reduction that maintains acceptable processor performance while matching adapter power output. This partial action approach preserves useful functionality while ensuring stable operation without complete frequency reduction
Data Source
AI summary
A power management method is suitable for an electronic device including a controller, a processor and a battery, and includes following steps. A first power is provided to the electronic device by a power adapter, and a maximum value of the first power is smaller than a maximum value of a rated consumed power of the electronic device. A power state of a second power of the battery is obtained by the controller. A control signal is generated according to the power state, and the processor adjusts an operation performance of the processor based on the control signal. The operation performance of the processor is continuously adjusted according to the power state.