Bidirectional Charging Circuit for Mobile Terminals
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Solution Overview
Problem
Current solutions for extending mobile phone battery life, such as replaceable batteries and external power sources, require additional parts and changes to the phone's design, inconveniently affecting user experience.
Innovation Solution
A charging and discharging apparatus with a interface shell and circuit that includes a battery connection end, current input end, and current output end, allowing for external connection via an interface wire to enable mutual charging between terminals without requiring additional parts or changes to the terminal design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If replaceable batteries or external power sources are used to extend mobile phone battery life, then the battery duration is improved, but the device complexity and ease of operation deteriorate due to requiring additional parts and design changes
Solution Approach 1:
The mobile phone's charging interface is designed to perform multiple functions: it can both charge the phone's own battery and serve as a power source to charge other devices. The charging circuit automatically detects and switches between charging mode and discharging mode based on connection status, eliminating the need for separate external power sources or replaceable batteries while extending battery duration.
2Duration of action of moving object
If replaceable batteries or external power sources are used to extend mobile phone battery life, then the battery duration is improved, but the ease of operation deteriorates due to inconvenient user experience
Solution Approach 1:
The charging circuit incorporates automatic detection and switching functionality that operates without user intervention. When another device is connected to the charging interface, the circuit automatically detects the connection and switches from charging mode to discharging mode, and vice versa, providing convenient operation without requiring users to manually configure or switch between different power sources.
3Adaptability or versatility
If charging circuit design is integrated on terminal side with discharging capability, then the adaptability is improved, but the device complexity increases due to design changes
Solution Approach 1:
The charging interface and circuit are designed with universal functionality to both charge and discharge. The interface includes a charging port connected to a charging circuit that can operate in two modes: receiving power to charge the phone's battery, or providing power to charge connected devices. This dual-functionality is achieved by integrating detection and switching circuits that automatically manage the bidirectional power flow, making the terminal adaptable without requiring separate external power sources.
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
Enables convenient mutual charging between terminals, improving user experience by allowing charging without the need for extra components or design modifications.
Implementation Method 1
one end of the interface wire for external connection is electrically connected to the battery connection end, and the other end is electrically connected to a battery of a first terminal; the current input end is configured to be connected to a current output end of a second charging and discharging apparatus
Data Source
AI summary
Embodiments provide a charging and discharging apparatus and a terminal. The charging and discharging apparatus includes a charging and discharging interface and a interface wire; the charging and discharging interface includes a charging and discharging circuit; the charging and discharging circuit includes a battery connection end, a current input end, and a current output end; one end of the interface wire for external connection is electrically connected to the battery connection end, and the other end is connected to a battery of a first terminal; the current input end is configured to be connected to a current output end; the second charging and discharging apparatus is electrically connected to a second terminal; the current output end is configured to be connected to a current input end. Embodiments are used to realize mutual charging between terminals.