Display-State Charging Mode Switching for Heat-Aware Battery Charging
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Solution Overview
Problem
As electronic apparatuses with larger display screens experience increased power consumption, existing charging methods using charge pumps lead to high heat loss and temperature increases, triggering charging protection and making it unsuitable to use the device during charging.
Innovation Solution
An electronic apparatus with a processor that generates a mode-selection signal based on the display state to switch between charge pump charging mode and direct charging mode, utilizing a battery management circuit to optimize charging efficiency and manage heat.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If charge pump charging mode is used to accelerate charging speed, then charging speed is improved, but heat loss increases and temperature becomes high
Solution Approach 1:
The patent implements dynamic switching between charge pump charging mode and direct charging mode based on display state. When display is off, charge pump mode is used for fast charging; when display is on, direct charging mode is used to reduce heat. This dynamic adaptation resolves the contradiction by adjusting charging method according to real-time device state.
Solution Approach 2:
The patent changes charging parameters (charging mode) based on display state parameters. By monitoring whether the display is on or off, the system selects appropriate charging parameters (charge pump vs direct charging), thereby optimizing the balance between charging speed and heat generation under different operating conditions.
2Productivity
If charge pump charging mode is used to satisfy charging speed requirement, then charging speed is improved, but temperature increases triggering charging protection
Solution Approach 1:
The system dynamically adjusts charging mode based on real-time display state. When display is off, charge pump mode provides fast charging; when display is on, direct charging mode prevents overheating. This dynamic control allows the system to achieve fast charging when safe and prevent overheating when display is active.
Solution Approach 2:
The patent uses feedback from display state (on/off status) to control charging mode selection. The processor monitors display state and generates mode-selection signal accordingly, creating a closed-loop control system that prevents overheating by switching to direct charging mode when display is on, thus avoiding temperature-triggered charging protection.
3Productivity
If charge pump is used for charging, then charging speed requirement is met, but device cannot be used during charging
Solution Approach 1:
The patent enables dynamic mode selection based on whether the display is on or off. When display is on (device being used), direct charging mode is selected to maintain acceptable temperatures for comfortable use. When display is off (device not being used), charge pump mode provides fast charging. This resolves the contradiction by allowing device usability during charging when display is on.
Data Source
AI summary
An electronic apparatus includes: a display; a processor configured to, when a battery of the electronic apparatus is to be charged, obtain a display state of the display and generate a mode-selection signal according to the display state; and a battery management circuit connected to the processor and configured to, upon receiving the mode-selection signal, switch to one of a charge pump charging mode or a direct charging mode based on the mode-selection signal to charge the battery.