Power Adapter Quick Charging via Dynamic Voltage Adjustment
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Solution Overview
Problem
Conventional power adapters use constant-voltage outputs for charging batteries, leading to prolonged charging times and preventing quick charging for batteries with large capacities.
Innovation Solution
A power adapter that communicates with an electronic device to detect output voltage and current, adjusts output voltage and current based on battery feedback, and switches to quick charge mode when conditions are met, using a communication interface to optimize charging parameters for quick charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If constant-voltage output is used for charging, then charging stability is maintained, but charging time becomes too long
Solution Approach 1:
The power adapter dynamically switches between constant-voltage mode and quick-charge mode based on battery state. The system transitions from static constant-voltage charging to dynamic adaptive charging, adjusting output parameters in real-time to achieve both stability and speed.
Solution Approach 2:
The patent changes the output voltage and current parameters based on battery charge state. During quick-charge phase, higher voltage (e.g., 5V) and current are applied; during normal charging, standard parameters are used. This parameter adaptation resolves the contradiction between charging speed and stability.
2Productivity
If quick charge mode is activated, then charging speed increases, but system complexity increases due to communication protocols
Solution Approach 1:
The system uses feedback communication between power adapter and electronic device to determine battery state and negotiate charging mode. The device sends battery status information, and the adapter adjusts output accordingly, enabling quick charge without excessive complexity through intelligent feedback loops.
Solution Approach 2:
The communication interface serves multiple functions: it detects battery state, negotiates charging mode, and monitors charging progress. This multi-functionality reduces the need for separate dedicated circuits, thereby limiting the increase in system complexity while enabling quick charge capability.
3Power
If output voltage is increased for quick charging, then charging power increases, but risk of voltage mismatch increases
Solution Approach 1:
Before initiating quick charge, the system performs preliminary voltage detection and negotiation through the communication interface. The adapter detects output voltage, compares it with required voltage, and only activates quick charge when compatibility is confirmed, preventing voltage mismatch damage.
Solution Approach 2:
The communication interface acts as an intermediary that mediates between the power adapter's output capabilities and the battery's requirements. It transmits voltage information and coordinates parameter adjustment, ensuring safe voltage matching during high-power quick charging.
Data Source
AI summary
The present disclosure provides a power adapter, an electronic device and a charging apparatus. In the process of charging a battery in a conventional charge mode after the power adapter is powered on, the power adapter carries out quick charge inquiry communication with the electronic device when an output current value of the power adapter is within a conventional current range for a preset time interval; after the electronic device sends a quick charge command to the power adapter, the power adapter adjusts the output voltage according to the battery voltage information fed back by the electronic device; and when the output voltage meets a voltage requirement for quick charge preset by the electronic device, the power adapter adjusts the output current and the output voltage for charging the battery in a quick charge mode.