Power Supply VID Code Update for Charging Compatibility
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Solution Overview
Problem
USB power delivery systems face issues with charging compatibility due to mismatched vendor ID (VID) codes between power supplies and electronic devices, leading to suboptimal charging power and extended charging times when VID codes do not match.
Innovation Solution
A power supply system with an ID code updating module that stores a look-up table of VID codes, allowing it to match and update VID codes when connected devices have non-matching codes, ensuring optimal power delivery by providing different power levels based on VID compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the power supply uses fixed VID codes in the look-up table, then the device complexity is reduced, but the adaptability to different electronic devices deteriorates
Solution Approach 1:
The patent implements a dynamic VID code matching mechanism where the power supply can update the look-up table during operation. When a device with a new VID is connected, the system learns the correct VID-device pairing and updates the table, transforming a static structure into a dynamic adaptive system that improves compatibility without significantly increasing complexity
Solution Approach 2:
The power supply system performs self-updating of the VID look-up table by automatically detecting when a VID mismatch occurs and learning the correct VID from the connected device. This self-service capability allows the system to adapt to new devices without external intervention or complex configuration processes
2Productivity
If the power supply provides rated charging power when VID matches, then the charging speed is improved, but the charging compatibility deteriorates
Solution Approach 1:
The patent applies different power delivery strategies based on local conditions - when VID matches, full rated power is provided for fast charging; when VID mismatches, the system provides reduced power that is still sufficient for charging but at a slower rate. This localized quality adjustment resolves the contradiction by optimizing charging speed for compatible devices while maintaining basic charging functionality for incompatible devices
Solution Approach 2:
The system dynamically changes the power delivery parameter based on VID matching status. The power supply monitors VID compatibility and adjusts the output power parameter accordingly - switching between rated power mode and reduced power mode. This parameter change allows the system to maintain high productivity for compatible devices while ensuring broad compatibility across different device types
3Use of energy by moving object
If the power supply provides reduced power when VID does not match, then the energy consumption is reduced, but the charging time increases
Solution Approach 1:
When VID mismatch is detected, the system applies partial action by providing reduced power that is sufficient to charge the device but at a slower rate. This partial power delivery consumes less energy from the power supply while still accomplishing the charging function, accepting longer charging time as a trade-off for energy conservation and compatibility maintenance
Data Source
AI summary
A power supply system with identification code updating capability is used for providing an electric power to an electronic device having a first identification (ID) code. The power supply system includes a power supply device and an ID code updating module. The power supply device is configured to provide the electric power to the electronic device and includes a memory unit. The memory unit is configured to store a look-up table including at least one second ID code. The ID code updating module is electrically connected to the power supply device. When the second ID code listed in the look-up table does not match with the first ID code of the electronic device, the ID code updating module updates a second ID code matching with the first ID code in the look-up table. A charging method is further disclosed.