Intelligent Mobile Power Supply USB Data Communication Mode Switching
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Solution Overview
Problem
Existing mobile power supplies are limited to single charging mode, preventing simultaneous charging and data communication via USB, which hampers user experience by restricting power delivery to 2.5 W during data transfer.
Innovation Solution
An intelligent mobile power supply with a discharging mode selection module that switches between single charging and charging-communication modes using USB interfaces, allowing data communication while maintaining rapid charging capabilities by utilizing USB Battery Charging Protocol or other fast charging standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If USB data communication is enabled during charging, then data transfer functionality is improved, but charging power is limited to 2.5 W maximum
Solution Approach 1:
The patent implements dynamic switching between single charging mode and charging-communication mode through a mode selection module. The system can dynamically adjust the USB interface configuration based on operational requirements, enabling high-power charging when data communication is not needed, and switching to data communication mode when required, thus resolving the contradiction between power delivery and data transfer capabilities
Solution Approach 2:
The patent changes the operational parameters of the USB interface by implementing different modes with distinct electrical characteristics. In single charging mode, the interface is configured for maximum power delivery without data communication constraints. In charging-communication mode, the interface parameters are adjusted to allow both power delivery and data signal transmission, effectively managing the trade-off between power and communication functionality
2Productivity
If fast charging protocol is used, then charging speed is improved, but the interface must operate in single charging mode without data communication
Solution Approach 1:
The system dynamically selects between fast charging protocol and standard charging protocol based on the operational mode. When in single charging mode, fast charging protocols (such as QC3.0, PD) are activated to maximize charging speed. When data communication is required, the system switches to charging-communication mode with standard 5V/500mA protocol, thus maintaining both high-speed charging capability and data communication functionality at different times
3Adaptability or versatility
If USB interface is used for both charging and data communication simultaneously, then functionality is expanded, but charging power is restricted to 2.5 W
Solution Approach 1:
The patent employs dynamic mode switching to resolve the power limitation issue. The mode selection module monitors system state and automatically switches between single charging mode (high power, no communication) and charging-communication mode (dual functionality, limited power). This dynamic approach allows the system to achieve both high power delivery and dual functionality, just not simultaneously, thereby resolving the contradiction
Solution Approach 2:
The system changes the electrical parameters of the USB interface based on the selected mode. In charging-communication mode, the interface operates with 5V/500mA parameters to accommodate both power and data signals. In single charging mode, the parameters are changed to support higher current and voltage for fast charging, thus managing the power-delivery versus dual-functionality trade-off through parameter adjustment
Data Source
AI summary
An intelligent mobile power supply and a method for USB data communication therewith. The intelligent mobile power supply includes a battery, a charging control module, a discharging control module, a first USB interface and a second USB interface. In the single charging mode, a charged device receives a discharge of the intelligent mobile power supply through the discharging control module, but the intelligent mobile power supply does not perform USB data communication with the charged device. While in the charging and communication mode, the charged device receives the discharge of the intelligent mobile power supply through the discharging control module and can perform USB data communication with the intelligent mobile power supply through the first USB interface simultaneously. The second USB interface is connected with the charging control module, and the second USB interface can be connected with a power adapter or a PC host to charge the battery.