Multi-Terminal Fast Charging Circuit for Protocol-Compatible Power Sharing
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Solution Overview
Problem
Existing multi-terminal charging devices face issues with low wireless charging efficiency, excessive heat generation, and insufficient charging compatibility, leading to reduced charging rates, especially for devices with large battery capacities, due to the deception of power supply and voltage limitations that prevent the use of fast charging protocols.
Innovation Solution
A fast charging device with multiple intelligent terminals is designed, incorporating an input power management circuit, deception circuit, and boost-buck management circuits, which allow for selective connection to either a fast charging or non-fast charging protocol module, enabling stable and efficient wired and wireless charging through a combination of DC-DC boost-buck management circuits and protocol identification chips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless charging mode is used for multiple terminals, then charging convenience is improved, but charging efficiency deteriorates and heat generation increases
Solution Approach 1:
The charging system is segmented into independent charging paths for different terminal types (mobile phones, tablets, wearables). Each path has dedicated power management circuits that can independently negotiate and execute fast charging protocols, allowing simultaneous fast charging of multiple devices without energy loss from protocol deception or voltage conversion.
2Reliability
If deception power supply is used to ensure terminal safety, then device safety is improved, but fast charging capability deteriorates
Solution Approach 1:
The power management system dynamically adapts to different terminal types and charging requirements. Protocol identification chips automatically detect the connected device type and activate appropriate fast charging protocols (QC, PD, AFC, FCP) without deception. The system maintains safety through real-time monitoring and dynamic voltage/current adjustment based on actual terminal needs, enabling both safety and fast charging capability.
3Reliability
If default voltage is stabilized at 5V for compatibility, then charging safety is improved, but charging rate deteriorates
Solution Approach 1:
The system changes voltage and current parameters dynamically based on the detected terminal type and supported protocols. Instead of stabilizing at fixed 5V, the power management circuits negotiate and adjust parameters in real-time to match terminal requirements, enabling fast charging at higher voltages (9V, 12V, 20V) when supported, while maintaining safety through protocol-compliant parameter adjustment.
4Adaptability or versatility
If hybrid wired and wireless charging base is used, then charging versatility is improved, but charging efficiency deteriorates compared to direct fast charging adapter
Solution Approach 1:
The charging base integrates multiple charging functions (wired fast charging, wireless charging, protocol identification) into a universal platform. Protocol identification chips automatically recognize terminal types and activate appropriate charging modes, enabling the single device to serve multiple terminal types efficiently without energy loss from voltage conversion or protocol deception, matching the efficiency of direct fast charging adapters.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances charging compatibility and efficiency by stabilizing voltage and power supply, allowing for wide adaptability and fast charging rates, while ensuring safety and integrity of charging protocols, supporting QC and PD protocols, and eliminating the need for deception circuits.
Implementation Method 1
a combination of DC-DC boost-buck management circuits and protocol identification chips
Implementation Method 2
The all-in-one wireless charging base mainly charges a mobile phone, a watch, and a headphone in a wireless mode
Data Source
AI summary
The invention discloses a fast charging device with multiple intelligent terminals and belongs to the field of charging technologies. The fast charging device includes an input power management circuit, a deception circuit, multiple boost-buck management circuits, and multiple charging modules; the input power management circuits are externally connected with a charging head and connected with the deception circuit; the deception circuit is connected with the boost-buck management circuits connected with a corresponding charging module; the charging module is externally connected with a terminal to be charged, includes a wired charging module and a wireless charging module, and further includes a fast charging protocol module and a non-fast charging protocol module; and the terminal to be charged is selectively connected with the fast charging protocol module or the non-fast charging protocol module for charging as required. The invention realizes the technical effect of improving charging compatibility and efficiency.