Power Supply System Voltage Detection Energy Saving Mode

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Solution Overview

Problem

Unstable power voltage can cause electronic devices to crash, leading to data loss and inconvenience, as traditional UPS systems may provide unstable voltage due to asynchronous AC voltage generation during power anomalies.

Innovation Solution

A power supply system with a voltage detecting unit, AC/DC converting unit, control unit, and battery that directly detects power anomalies, enters an energy-saving mode, and provides DC voltage from the battery to prevent crashes and data loss, avoiding abrupt voltage phase changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional UPS system is used to provide power during power anomalies, then the electronic device can continue operating, but the AC voltage generated by the UPS may be asynchronous with the power voltage, causing unstable voltage and system crash

Engineering Contradiction:

Improvepower supply stabilityVSAvoidvoltage phase change

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent extracts the AC/DC conversion function from the traditional UPS system and implements it directly within the electronic device. The power supply system includes an AC/DC conversion unit that converts power voltage directly to DC voltage, eliminating the need for AC voltage generation and synchronization, thus avoiding the harmful voltage phase changes while maintaining reliable power supply.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a voltage detecting unit as an intermediary that directly monitors the power voltage and generates detection signals. This intermediary component enables the system to detect power anomalies early and switch to battery power before unstable voltage occurs, preventing the harmful effect of voltage phase changes while ensuring continuous operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If the electronic device operates in normal mode during power anomalies, then the device can maintain full functionality, but power consumption increases and battery depletes faster

Engineering Contradiction:

Improvedevice functionalityVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic operation modes that can switch between normal mode and energy-saving mode based on power conditions. The control unit receives detection signals from the voltage detecting unit and dynamically adjusts the device operation accordingly, enabling full functionality when power is stable and energy-saving mode when running on battery, thus optimizing both productivity and energy usage.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes operational parameters based on power availability. When power anomalies are detected, the system transitions from normal operation parameters to energy-saving parameters, adjusting performance characteristics to match available power resources and extend battery life while maintaining essential functionality.

Inventive Principle:

Principle #35Parameter changes

3Duration of action of moving object

If a larger battery is used to provide sufficient DC voltage during power anomalies, then the electronic device can operate longer, but the product size and weight increase

Engineering Contradiction:

Improveoperation durationVSAvoidbattery size

Core Design Contradiction:

Duration of action of moving objectVSWeight of moving object

Solution Approach 1:

The patent implements preliminary detection of power anomalies through the voltage detecting unit before the battery is fully depleted. By detecting power issues early and switching to energy-saving mode proactively, the system extends the effective operation duration on battery power without requiring a larger battery capacity, thus maintaining portable form factors.

Inventive Principle:

Principle #10Preliminary action

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

Enables users to complete tasks and prevent data loss during power anomalies by reducing power consumption and stabilizing voltage, allowing for a smaller battery size and reduced product size while maintaining sufficient voltage for data saving.

Implementation Method 1

the voltage detecting unit detects a power voltage directly for generating a detecting signal

Methodology Applied

Scientific EffectVoltage detection: Electric Field

Implementation Method 2

The AC/DC converting unit converts the power voltage to a DC voltage, and provides the DC voltage to the electronic device

Methodology Applied

Scientific EffectAC/DC conversion: Electromagnetic Induction

Implementation Method 3

The battery is coupled to the AC/DC converting unit and provides a DC voltage that the electronic device needs in the energy-saving mode

Methodology Applied

Scientific EffectBattery electrochemical conversion: Battery (electricity)

Data Source

PatentUS9178384B2Power supply system of electronic device and power supply method thereof

Publication Date: 2015.11.03 ASUSTEK COMPUTER INC

AI summary

A power supply system of an electronic device and a power supply method thereof are provided. Directly detecting the power voltage, when a power anomaly of the power voltage is detected, the electronic device may enter the energy-saving mode immediately for reducing power consumption, and a required DC voltage may be provided directly from the battery.