Shutdown Power-State Control for Battery Discharge Reduction
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Solution Overview
Problem
Current electronic devices enter a fixed and inconvenient power saving mode after a long shutdown without external power, leading to unnecessary battery discharge and reduced battery life.
Innovation Solution
An electronic device and control method that allows users to set a time threshold for transitioning from a first shutdown state to a second shutdown state, where the power module provides power to the control system until the threshold is met, and then enters a power saving mode, reducing unnecessary discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the electronic device enters a fixed power saving mode after long shutdown, then battery power consumption is reduced, but battery life is reduced due to unnecessary discharge
Solution Approach 1:
The patent implements dynamic power management by introducing two distinct shutdown states (first shutdown state and second shutdown state) with different power consumption characteristics. The system dynamically transitions between these states based on user-configurable time thresholds and actual shutdown duration, rather than using a fixed power saving mode. This dynamic approach allows the device to maintain optimal battery life while still reducing power consumption when appropriate.
Solution Approach 2:
The patent changes the time parameter threshold that triggers the transition from first shutdown state to second shutdown state. By allowing users to configure different time thresholds (e.g., 1 hour, 2 hours, 3 hours, or longer), the system adapts the power management behavior to different usage scenarios. This parameter adjustment resolves the contradiction by enabling flexible control over when aggressive power saving begins, preventing unnecessary early discharge while still achieving power reduction when needed.
2Loss of energy
If the electronic device enters a fixed power saving mode immediately, then power consumption is reduced, but user convenience is reduced due to lack of flexibility
Solution Approach 1:
The system dynamically adjusts power management behavior based on user preferences and actual device usage patterns. Instead of a static, one-size-fits-all power saving mode, the device adapts its shutdown state transitions according to user-configurable time thresholds, providing both energy efficiency and operational flexibility.
Solution Approach 2:
The system automatically manages power states based on pre-configured user preferences without requiring continuous user intervention. Once users set their preferred time thresholds, the system autonomously determines when to transition between shutdown states, combining automated energy management with user-defined convenience parameters.
3Reliability
If the power module continuously provides power to the control system during shutdown, then device functionality is maintained, but battery discharge increases
Solution Approach 1:
The patent segments the shutdown period into two distinct phases: first shutdown state and second shutdown state. During the first shutdown state, the power module continues to provide power to the control system, maintaining device functionality. After the configured time threshold is reached, the system transitions to the second shutdown state where the power module stops providing power, thereby reducing battery discharge. This segmentation allows the system to balance functionality maintenance with energy conservation.
Solution Approach 2:
The system implements periodic power supply to the control system during the first shutdown state, then transitions to a no-power period during the second shutdown state. This periodic action pattern allows functionality to be maintained when needed while accepting power cutoff after a specified duration, optimizing the balance between reliability and energy loss.
Data Source
AI summary
A control method for an electronic device including determining a set time threshold in response to a user trigger input; if a duration of the electronic device being in a first shutdown state and the time threshold meet a preset condition, controlling the electronic device to be in a second shutdown state; if the electronic device is in the first shutdown state, causing a power module of the electronic device to provide power to a control system of the electronic device through a power circuit; and if the electronic device is in the second shutdown state, causing the power module of the electronic device to stop providing power to the control system and causing the electronic device to enter a power saving mode.