DC Power Supply Expansion Card for Safe Hand-Held Device Charging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current desktop computers are inefficient and unsafe for charging hand-held devices due to shunted electricity from USB ports, resulting in long charging times and potential device damage from unstable voltages.
Innovation Solution
A direct-current power supply expansion card with a circuit board, input and output interfaces, a fixing insertion plate, self-locking switch, overload protection, short-circuit protection, and heat dissipation features, allowing safe and efficient charging of hand-held devices from a desktop computer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If USB ports on mainboard are used for charging hand-held devices, then charging accessibility is improved, but charging efficiency deteriorates due to electricity shunting and great loss
Solution Approach 1:
The patent segments the power supply system by separating the charging function from the mainboard's USB ports. An independent expansion card is installed in the host case, directly connected to the power supply unit, creating a dedicated charging pathway that bypasses the mainboard's electricity shunting issue while maintaining USB port accessibility for data transmission.
2Ease of operation
If USB ports are used for charging, then charging convenience is improved, but charging safety deteriorates due to lack of protection and unstable voltages
Solution Approach 1:
The expansion card acts as an intermediary device between the power supply unit and hand-held devices. It includes protection circuits that monitor and regulate voltage output, providing stable and safe charging while maintaining the convenience of USB connectivity for data synchronization.
3Adaptability or versatility
If electricity is shunted from mainboard, then USB port availability is improved, but charging power deteriorates due to small electricity quantity
Solution Approach 1:
The system is segmented into two independent functional paths: the mainboard's USB ports remain available for data transmission and low-power devices, while the expansion card provides a dedicated high-power charging path directly from the power supply unit, eliminating the electricity shunting problem.
4Reliability
If expansion card is added to provide direct-current power, then charging safety is improved, but device complexity increases
Solution Approach 1:
The expansion card is designed with multi-functionality to justify its addition. It provides not only protected direct-current power output but also maintains USB data transmission capability, serves as a voltage regulator, and includes protection circuits. This consolidates multiple functions into one component, minimizing the increase in overall system complexity.
Data Source
AI summary
The present disclosure discloses a direct-current power supply expansion card. This direct-current power supply expansion card comprises a circuit board, an input interface arranged on the circuit board, a direct-current output interface arranged on the circuit board, and a fixing insertion plate connected to the circuit board, the fixing insertion plate being used for fixing the circuit board onto a host case. The technical solution of the direct-current power supply expansion card in the present invention converts, by means of the direct-current power supply expansion card, a power supply of a desktop computer into a direct-current power supply capable of charging a hand-held device, thereby improving the convenience and safety of charging for a user.