Charging Control Circuit for Efficient Wireless-to-Wired Switching
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Solution Overview
Problem
The efficiency of wireless charging for terminal devices is low due to existing technologies, which limits charging speed and increases temperature during the process.
Innovation Solution
A charging control circuit with a switch circuit that connects a high-efficiency first charging sub-circuit during wireless charging, automatically switching to a wired charging mode when a wired charger is connected, utilizing a fast charging circuit and a Power Management IC to optimize charging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless charging module is used, then charging convenience is improved, but charging efficiency deteriorates
Solution Approach 1:
The patent implements dynamic switching between wireless and wired charging modes based on real-time detection of charger type. The charging control circuit automatically selects the optimal charging path: wireless charging mode for convenience when no wired charger is detected, and wired charging mode for efficiency when a wired charger is connected, thereby resolving the contradiction between charging convenience and charging efficiency
Solution Approach 2:
The patent changes the operational parameters of the charging system by detecting the presence of a wired charger and switching between different charging modes. When a wired charger is detected, the system transitions from wireless charging parameter set to wired charging parameter set, optimizing charging efficiency while maintaining user convenience
2Speed
If wireless charging is used, then charging speed is improved, but temperature increases
Solution Approach 1:
The system dynamically adjusts charging mode based on temperature conditions and charger type detection. When a wired charger is detected or temperature exceeds threshold, the system switches from wireless to wired charging, which provides faster charging speed with better heat management, thereby resolving the contradiction between charging speed and temperature control
Solution Approach 2:
The charging control circuit acts as an intermediary that detects charger type and mediates between wireless and wired charging modes. This intermediary function allows the system to select the optimal charging path that balances speed and temperature, using wired charging as the mediator when high speed is needed with temperature control
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
Improves wireless charging efficiency by using a high-efficiency charging sub-circuit, increasing charging speed and reducing temperature, while allowing automatic switching to wired charging for higher speeds when necessary.
Implementation Method 1
The principle of wireless charging is the transfer of energy between a charger and a terminal device via a magnetic field without any electrical wire connected in between
Data Source
AI summary
A charging control circuit, a terminal device, and a control method are disclosed. The charging control circuit includes a first charging sub-circuit (1) and a second charging sub-circuit (2), a charging efficiency of the first charging sub-circuit being higher than a charging efficiency of the second charging sub-circuit. The charging control circuit further includes a switch circuit (3), where a first contact of the switch circuit is connected to a charging port (4), a second contact of the switch circuit is connected to an output terminal of a wireless charging module (5), and a third contact of the switch circuit is connected to an input terminal of the first charging sub-circuit; and in a case of a wireless charging operation, the first contact and the third contact disconnect from each other and the second contact and the third contact conductively connect to each other.