Electronic Device Standby Power Control via Charge-Discharge Device
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Solution Overview
Problem
Despite efforts to reduce global energy consumption and carbon dioxide emissions, electronic devices continue to exhibit increasing standby power consumption due to the large number of electronic products in use, necessitating a solution to minimize power usage in standby states.
Innovation Solution
An electronic device design incorporating a power circuit, charge-discharge device, voltage regulator, and processing unit, where the processing unit controls the power circuit to stop providing power when the device enters a standby state and the discharge voltage is higher than a predetermined level, utilizing a detection unit to switch off the control switch, thereby reducing standby power consumption to zero.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power circuit continues to provide standby voltage to maintain device functionality in standby state, then the device can respond quickly to user input, but standby power consumption increases
Solution Approach 1:
The charge-discharge device is charged in advance during normal operation to store energy. When standby state is detected, this pre-stored energy is immediately used to power the system circuit, enabling quick response without continuous power supply from the power circuit.
Solution Approach 2:
The patent extracts the standby power supply function from the main power circuit by introducing a separate charge-discharge device. This allows the power circuit to be completely disconnected during standby state while the charge-discharge device independently powers the system circuit.
2Loss of energy
If the control switch is switched off to eliminate standby power consumption, then energy efficiency improves, but the device loses ability to respond to external signals
Solution Approach 1:
The charge-discharge device is charged in advance during normal operation so that when the control switch is turned off, the system circuit can still receive and process remote control signals using the pre-stored energy, maintaining adaptability without power consumption.
3Measurement precision
If the detection unit continuously monitors discharge voltage to control the power circuit, then power management accuracy improves, but additional power consumption is introduced
Solution Approach 1:
The detection unit is powered by the charge-discharge device itself rather than the external power circuit. This allows the detection unit to operate autonomously using only the energy stored in the charge-discharge device, enabling continuous monitoring without additional external power consumption.
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 eliminates standby power consumption by using a charge-discharge device to provide power during standby states, ensuring the electronic device can maintain operation without drawing power from the commercial power source, thus reducing overall energy usage.
Implementation Method 1
a charge-discharge device (22) coupled to the standby voltage... The charge-discharge device is coupled to the standby voltage and outputs a discharge voltage
Data Source
Figure 1a~1b
Figure 2
Figure 3
AI summary
There is provided an electronic device including a power circuit and a system circuit. The system circuit includes a processing unit and a charge-discharge device. The processing unit controls the power circuit to stop providing power to the system circuit when identifying that the electronic device enters a standby state and that a discharge voltage of the charge-discharge device is higher than a predetermined voltage thereby decreasing a standby power consumption of the electronic device.