Dynamic Power Control for USB Charging and High-Current Operations
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Solution Overview
Problem
Conventional USB charging limits the electric current provided to secondary batteries in electronic devices, making it difficult to control the charging process and perform operations requiring high power levels, such as driving a lens barrel, while charging.
Innovation Solution
An electronic device with a connecting unit, charging unit, electric supplying unit, and electronic source controlling unit that manages the electric power supply to balance charging and operational demands by adjusting the electric current based on access requests and charging conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If USB charging is used to charge a secondary battery, then the battery can be charged through a standardized interface, but the electric current is limited by USB specifications and cannot provide sufficient power for high-power operations
Solution Approach 1:
The patent implements dynamic control of the charging current based on the operational state of the electronic device. The control unit adjusts the charging current in real-time: when high-power operations (such as lens barrel driving) are detected, the charging current is reduced to prioritize operational power needs; when no high-power operations are occurring, the charging current is increased to maximize charging efficiency. This dynamic adjustment resolves the contradiction between USB's current limitations and the need for sufficient power during charging.
2Power
If charging current is increased to meet high-power operation demands, then sufficient power can be provided for operations like lens barrel driving, but the USB specification's predetermined rating is exceeded
Solution Approach 1:
The system dynamically switches between USB charging and battery power based on real-time power demands. When high-power operations are required, the system temporarily prioritizes battery power delivery over charging, allowing the device to exceed USB rating during operations while maintaining compliance during normal charging states. This dynamic power management ensures both adequate power for operations and USB specification compliance under normal conditions.
3Ease of operation
If the electronic device performs high-power operations while charging via USB, then operational functionality is maintained, but the charging efficiency is reduced due to power consumption during operations
Solution Approach 1:
The control unit implements real-time monitoring and dynamic adjustment of power allocation between charging and operations. When high-power operations are detected, the system automatically reduces the charging current to prevent power conflicts and potential overheating. When operations are not occurring or power demands are low, the system maximizes charging current to improve charging efficiency. This dynamic balancing allows the device to maintain operational functionality while optimizing charging efficiency based on actual power needs.
Data Source
AI summary
An electric device including: a connecting unit connected to a connection line supplying an electric power of a predetermined rating and transmitting and receiving an information; a charging unit conducting a charging of a charging battery connected to an own device, by the electric power supplied by the connection line; an electric supplying unit supplying an electric power to a recording medium storing an information; a reading-and-writing unit performing a reading-and-writing operation of the recording medium; and an electronic source controlling unit performing a control of the electric power supplied to the charging unit, when the reading-and-writing unit performs the reading-and-writing operation of the recording medium, according to an access request to the recording medium via the connection line.