Multi-Input Power System for Combining Multiple AC-to-DC Signals
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Solution Overview
Problem
Conventional mobile devices can only support one AC-to-DC converter connection for power supply, limiting the ability to simultaneously utilize multiple AC-to-DC converters with different output standards to provide electric power.
Innovation Solution
An electronic device with a multi-input power system and power management system that combines power signals from multiple AC-to-DC converters, using current and voltage sensors, regulators, and control logic to manage and optimize the combined power signal, supporting standards like USB Type-C Power Delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional mobile device supports only one AC-to-DC converter connection, then the device structure remains simple, but the power supply capability is limited and cannot simultaneously utilize multiple AC-to-DC converters with different output standards
Solution Approach 1:
The power system is divided into multiple independent input channels, each capable of receiving power from different AC-to-DC converters with different output standards. Each channel has its own power management circuitry that can independently detect and regulate the input power, allowing the system to accept multiple power sources simultaneously without requiring a complex unified input interface.
Solution Approach 2:
The power management system is designed with universal compatibility to handle multiple AC-to-DC converter output standards (such as 5V/2A, 12V/3A, 20V/5A, etc.). The system can automatically detect the input power standard and switch between or combine multiple power sources, making a single device capable of working with various power adapters without requiring device-specific modifications.
2Productivity
If multiple AC-to-DC converters are used to simultaneously supply electric power, then the power supply speed and charge efficiency are improved, but the device requires complex power management circuits and control logic
Solution Approach 1:
The power management system incorporates feedback mechanisms that continuously monitor the status of each power input channel, including voltage levels, current draw, and power delivery capability. This feedback information is used by the control logic to dynamically adjust power distribution, prioritize power sources, and combine multiple inputs efficiently, thereby optimizing charge speed while managing system complexity through intelligent control rather than hardware complexity.
Solution Approach 2:
Each power input channel is equipped with self-detection and self-regulation capabilities that allow the system to automatically identify the connected AC-to-DC converter's output standards and configure the power management parameters without external intervention. The system can autonomously determine which power source to use or combine, and automatically adjusts voltage and current regulation, reducing the need for complex external control circuits.
Data Source
AI summary
An electronic device includes a multi-input power system and a power management system. The multi-input power system is configured to combine a first power signal with a second power signal, and output a combined power signal. The power management system is configured to manage the combined power signal. The electronic device supports a standard of USB (Universal Serial Bus) Type-C Power Delivery.