Charging Circuit Integrating Wired and Wireless Power
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Solution Overview
Problem
Terminal manufacturers face the challenge of integrating wired and wireless charging technologies into a single solution that efficiently charges batteries, as users prefer both methods, and existing systems often result in low charging currents during wireless charging, leading to prolonged battery charging times.
Innovation Solution
A charging circuit that includes a wired connection module, wireless charging module, switch circuit, control circuit, shunt circuit, and charging management module, allowing for parallel connection of the shunt and switch circuits to reduce impedance and enable high-current charging, while the control circuit manages the flow of charging signals to prioritize wired or wireless charging based on user preferences and signal levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless charging module is used, then user convenience is improved (no wired connection needed), but charging current becomes extremely low resulting in long charging time
Solution Approach 1:
The charging circuit dynamically switches between wireless charging mode (for convenience) and wired charging mode (for high-speed charging) based on real-time detection of charging signal strength and user needs, allowing the system to adapt its charging characteristics rather than being fixed in one mode
Solution Approach 2:
The charging circuit is designed to support both wireless charging and wired charging functions within a single integrated system, allowing it to perform multiple charging modes depending on the connection type available, thus providing both convenience and high-speed charging capabilities
2Adaptability or versatility
If both wired charging and wireless charging modules are integrated, then charging versatility is improved, but device complexity increases
Solution Approach 1:
The wireless charging module and wired connection module share common circuit components including the charging management module, battery interface, and control logic, merging their functions into a unified charging system that reduces overall complexity compared to completely separate implementations
Solution Approach 2:
The control circuit preemptively detects the presence and strength of charging signals from either wireless or wired sources before initiating charging, and pre-configures the appropriate charging pathway, thereby simplifying the control logic by avoiding complex real-time decision-making during charging operation
3Productivity
If wired charging is prioritized, then charging speed is improved (high current), but user flexibility deteriorates (requires physical connection)
Solution Approach 1:
The control circuit continuously monitors the charging signal strength from wireless sources and provides feedback to the switching mechanism, allowing the system to automatically select wired charging when high speed is needed and wireless charging when convenience is prioritized, based on real-time conditions
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
The solution enables efficient integration of wired and wireless charging, allowing for high-current battery charging and reducing charging time, while also preventing signal collisions and providing user feedback on the charging method through display indicators.
Implementation Method 1
a first input/output end of a wired connection module is configured to connect to an output end of a wired charger, a second input/output end of the wired connection module connects to a first input end of a switch circuit... a wireless charging module... an output end of the wireless charging module connects to a second input end of the switch circuit
Data Source
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AI summary
Embodiments of the present invention disclose a charging circuit and a terminal, where the charging circuit includes: a first input/output end of a wired connection module is configured to connect to an output end of a wired charger, a second input/output end of the wired connection module connects to a first input end of a switch circuit, and the second input/output end further connects to a first input/output end of a shunt circuit; a first input end of a control circuit connects to the second input/output end of the wired connection module, and an output end of the control circuit connects to an enabling end of a wireless charging module; an output end of the wireless charging module connects to a second input end of the switch circuit; a first output end of the switch circuit connects to an input/output end of a charging management module; a second input/output end of the shunt circuit connects to the input/output end of the charging management module, and a third end of the shunt circuit connects to the output end of the wireless charging module; an output end of the charging management module is configured to connect to a battery, thereby resolving a problem about how to integrate wired charging technologies and wireless charging technologies on a terminal.