Mobile Router Multi-USB Power Input Circuit

The patent combines multiple USB power supply inputs into a single mobile router device. The router can simultaneously receive power from multiple USB ports (e.g., USB port 1 and USB port 2) and integrate these power sources through internal circuitry including diodes and voltage converters, thereby increasing total power supply capacity while maintaining a unified device structure.

The patent segments the power input function by providing separate USB ports on the mobile router itself rather than requiring a single complex dual-input cable. Users can connect power cables directly to the router's USB ports, eliminating the need to carry and manage a specialized dual-input cable, thus improving portability while maintaining adequate power supply capacity.

The patent implements local quality control by using individual diodes (e.g., first diode and second diode) for each USB power input and dedicated voltage converters for each power path. This ensures that each power source is independently managed and protected, providing redundancy while maintaining organized, modular power management architecture that limits complexity to specific functional blocks rather than the entire system.

The patent converts the potential harmful effect of current backflow between power sources into a protective feature by using diodes in each power input path. These diodes allow current to flow only in the forward direction from each USB power source to the router, blocking any reverse current flow. This transforms what could be a damaging situation (power sources connected to each other) into a safe configuration where the diodes actively prevent harm while enabling multiple power sources to be connected simultaneously for increased power capacity.