Dynamic Voltage Charging Adaptor for Mobile Terminals
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Solution Overview
Problem
Existing portable mobile terminals require frequent charging due to increasing power consumption, with standard DC charging methods taking long periods and offering inflexible output voltages, leading to inefficient battery charging.
Innovation Solution
A mobile terminal and DC-charging power source adaptor system that dynamically adjusts charging voltage based on battery voltage, using a microprocessor to detect voltage ranges and communicate with the adaptor to output target charging voltages, enabling rapid charging by directly transmitting high current to the battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If standard DC charging with fixed voltage is used, then charging simplicity is maintained, but charging time becomes long and charging efficiency is low
Solution Approach 1:
The patent implements dynamic voltage adjustment in the charging power source adaptor, which automatically changes the output voltage based on the battery's charging state. The microprocessor detects battery voltage and current, then dynamically switches between multiple voltage levels (5V, 9V, 12V, 20V) to optimize charging speed at different stages, resolving the contradiction between charging speed and control complexity.
Solution Approach 2:
The patent changes the voltage parameter during the charging process by dividing it into multiple stages with different voltage levels. The system transitions from low voltage (5V) for initial charging to high voltage (20V) for rapid charging, and finally to constant voltage mode near full charge. This parameter variation enables fast charging while maintaining safety through automated control.
2Productivity
If high voltage charging is applied throughout the entire charging process, then charging speed increases, but battery safety and charging reliability deteriorate
Solution Approach 1:
The patent segments the charging process into multiple stages with different voltage levels: initial charging at 5V, rapid charging at 9V/12V/20V, and constant voltage charging at maximum voltage near full charge. This segmentation allows high voltage to be applied only when safe, improving charging speed while maintaining battery safety through staged voltage application.
Solution Approach 2:
The patent implements a feedback control mechanism where the microprocessor continuously monitors battery voltage and current, then adjusts the charging voltage accordingly. The system uses voltage thresholds to determine when to switch between charging modes, ensuring that high voltage is only applied when the battery can safely accept it, thus maintaining reliability while achieving fast charging.
3Adaptability or versatility
If multiple fixed voltage levels are provided, then voltage flexibility improves, but device complexity and control difficulty increase
Solution Approach 1:
The charging power source adaptor is designed with multi-functionality to support multiple voltage levels (5V, 9V, 12V, 20V) and multiple charging modes (constant current, constant voltage, rapid charging) within a single device. The microprocessor-based control system universally manages all voltage transitions and charging modes, providing voltage flexibility without requiring separate charging devices for each mode.
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
Significantly reduces charging time by allowing high current charging, alleviating the need for frequent charging and improving user satisfaction with mobile terminals.
Implementation Method 1
the AC to DC converting unit is configured to convert an AC input power source into charging voltage required for the mobile terminal, and to output the charging voltage via the charging interface
Implementation Method 2
the battery is configured to store electric energy
Data Source
AI summary
This disclosure provides a mobile terminal, a DC-charging power source adaptor, and a rapid charging method, which are proposed for a power source adaptor outputting dynamically adjustable voltage, where core voltage of a battery is divided into several intervals, and further in a segmented constant-current-like charging mode, a volt value of charging voltage output by the power source adaptor is adjusted dynamically according to the interval in which the core voltage of the battery in the mobile terminal while the battery is being charged lies, and the battery is DC-charged directly using the charging voltage output by the power source adaptor.