USB-C Transmission Device with External Power Switching
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Solution Overview
Problem
Current USB type-C connectors face issues with power stability and device damage due to varying voltages, and single USB connections fail to provide sufficient or stable power, leading to operational failures in power supply and receiving devices.
Innovation Solution
A transmission device with external power integration using a combination of USB type-C connectors, power transmission cables, switching units, and reverse voltage protection units, which enables power integration and confluence by supplying power from an external source through a power transmission cable, ensuring stable power delivery between devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If USB power delivery protocol with different voltages (5V, 12V, 20V) is used for power integration, then power transmission capability is improved, but connected devices may fail or be damaged due to voltage differences
Solution Approach 1:
The patent introduces a switching unit as an intermediary component between the power supply end device and the power receiving end device. This switching unit selectively connects or disconnects the power transmission path based on voltage matching, preventing direct voltage conflicts between devices with different voltage requirements while enabling power transmission when voltage conditions are appropriate.
2Device complexity
If a single USB connector is used to connect power supply end device and power receiving end device, then device complexity is reduced, but power supply stability is insufficient and devices cannot operate normally
Solution Approach 1:
The patent segments the power transmission function by introducing a separate switching unit that operates independently from the USB connector. This segmentation allows the USB connector to maintain its simple interface design while the switching unit provides sophisticated power management capabilities, including selective power transmission and voltage matching, thereby improving power supply stability without significantly increasing overall device complexity.
3Device complexity
If power is transmitted through a single USB cable, then cable integration is simplified, but power supply capacity is limited and cannot meet high power requirements
Solution Approach 1:
The patent merges multiple power sources by combining the USB power transmission path with an external power input path through the switching unit. This merging allows the system to draw power from either the USB connector or the external power input, or both simultaneously, thereby increasing the total power supply capacity while maintaining relatively simple cable integration through the use of a single power transmission cable.
Data Source
AI summary
The transmission device with external power includes a first USB type-C connector, a second USB type-C connector, a power transmission cable, a data transmission cable and a switching unit. The first USB type-C connector and the second USB type-C connector are connected to the first electronic device and the second electronic device. The power transmission cable is connected to the first USB type-C connector and the second USB type-C connector, so that the first electronic device supplies power to the second electronic device through the power transmission cable according to charging information of the second electronic device. The switching unit is connected to a power input end and the second USB type-C connector through the power transmission cable. When the first electronic device supplies power to the second electronic device, the switching unit is turned on and the power input end supplies power to the second electronic device.