Reverse Charging Circuit With Protocol-Based Current Boost
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Solution Overview
Problem
Existing charging circuits in electronic devices provide insufficient reverse charging current, leading to poor user experience and limited usage of the reverse charging function.
Innovation Solution
A charging circuit that includes a control module to detect and adjust the charging current based on the reverse charging protocol of the connected device, using a charge pump or boost circuit to increase the output current, and supports multiple charging protocols to enhance compatibility and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed small current is output to adapt to all second electronic devices, then compatibility is improved, but reverse charging speed deteriorates
Solution Approach 1:
The charging circuit dynamically adjusts the output current based on the detected charging protocol of the connected device. The control module switches between different current output modes (first current for fast charging protocols, second current for standard protocols) to achieve both high speed when applicable and broad compatibility when needed
Solution Approach 2:
The system changes the electrical parameter (output current) based on the detected protocol type. When a fast charging protocol is detected, the current is increased to a first value; when a standard protocol is detected, the current is maintained at a second value, thus optimizing charging speed while maintaining compatibility
2Productivity
If high current is output to increase reverse charging speed, then charging speed is improved, but heat loss increases
Solution Approach 1:
The system dynamically changes the output current parameter based on the charging protocol detected. By using higher current only when fast charging protocols are active (with proper heat management), and lower current for standard protocols, the system optimizes the balance between charging speed and heat generation
Solution Approach 2:
The control module receives feedback about the connected device's charging protocol capability and adjusts the output current accordingly. This feedback mechanism ensures that high current is only applied when the receiving device can handle it, preventing excessive heat generation while maintaining fast charging capability when needed
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 increases the reverse charging current, improving user experience and product competitiveness by accelerating charging speed and reducing heat loss, while being compatible with various charging protocols.
Implementation Method 1
a charge pump or boost circuit to increase the output current
Implementation Method 2
a charge pump or boost circuit to increase the output current
Data Source
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AI summary
A charging circuit (110) applied to a first electronic device includes a charging interface (120), a charging module (130) coupled therewith and configured to detect a connection between the charging interface (120) and a second electronic device, and adjust a current output to the second electronic device, a reverse charging protocol module (140), and a control module (150). The reverse charging protocol module (140) is configured to determine a reverse charging protocol matched with the charging current of the second electronic device. The control module (150) is coupled with the charging module (130) and the reverse charging protocol module (140), and configured to acquire the reverse charging protocol determined by the reverse charging protocol module (140) in response to the connection between the charging interface (120) and the second electronic device, and control the charging module(130) to adjust the current output to the second electronic device based on the reverse charging protocol. The charging circuit can increase the reverse charging current.