Power Adapter Dynamic Voltage Adjustment for Energy Efficiency
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Solution Overview
Problem
Existing power adapters in electronic devices continue to consume power and waste energy by maintaining output voltage regardless of the device's operating state, including during hibernation or when the battery is fully charged.
Innovation Solution
A portable electronic device with a power adapter that adjusts output voltage based on the device's operating state through a signal transmission interface, dynamically adjusting power supply to match the device's needs, thereby reducing energy consumption and waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power adapter keeps providing output voltage to the electronic product regardless of operating state, then the electronic product can always receive power supply, but power is wasted during hibernation mode or when battery is fully charged
Solution Approach 1:
The power adapter dynamically adjusts its output voltage based on the operating state of the electronic product. The adapter transitions from a static power supply mode to a dynamic control mode where it monitors device state (through communication interfaces) and adjusts output accordingly - providing full voltage when needed, reducing voltage during hibernation, and stopping output when battery is fully charged.
Solution Approach 2:
The system implements feedback control where the electronic product communicates its operating state back to the power adapter. The adapter receives state information (such as hibernation status, battery charge level) and uses this feedback to adjust its power output, creating a closed-loop control system that optimizes energy delivery.
2Reliability
If the power adapter continues providing output voltage to charge the battery even when charge is completed, then the battery can always maintain charge, but additional power is wasted
Solution Approach 1:
The power adapter takes preliminary action by monitoring battery charge status and proactively adjusting its output before excessive charging occurs. The adapter detects when the battery reaches full charge through communication with the device and preemptively reduces or stops power output to prevent energy waste.
Solution Approach 2:
The power adapter serves itself by autonomously monitoring its own output effectiveness through device feedback. When the device indicates full battery charge, the adapter self-adjusts by reducing or ceasing power output without requiring external intervention, making the system self-regulating.
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
The solution effectively saves power by dynamically adjusting the output voltage and power factor according to the device's state, ensuring efficient energy use and reducing carbon emissions while maintaining safety and alerting users to potential power adapter mismatches or overloads.
Implementation Method 1
The power adapter converts received power such as alternating current (AC) power or direct current (DC) power, and generates an output voltage accordingly
Data Source
AI summary
A portable electronic device is provided. The portable electronic device includes a host, a power adapter and a signal transmission interface. The host generates state information according to present operating state, and the power adapter is used to provide a voltage to the host. The power adapter receives the state information of the host via the signal transmission interface, and adjusts the output voltage according to the state information. By transmitting information between the host and the power adapter, the power adapter can be adjusted according to the operating state of the host. Moreover, the host can adjust the operating state according to the specification information of the power adapter. Consequently, the power consuming of the portable electronic device has best efficiency thus to reduce carbon emission.