Bidirectional Wireless Charging Bypass Control Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless charging devices have inefficient bidirectional charging, leading to reduced battery lifespan and low electricity efficiency due to fixed directional charging, which causes cumulative damage and worsens battery discharge/charge efficiency with increasing charges.
Innovation Solution
A bypass control bidirectional wireless charging device with a logic control unit, wireless transmission unit, full-bridge inverter, buck-boost unit, discharging switch unit, back current prevention unit, and selective switch unit, which allows power to be supplied by external power during discharging and by the battery during charging, transforming alternating current to direct current for efficient charging and discharging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed directional charging is used, then the charging function is simple to implement, but the battery effective duration is reduced and charging efficiency deteriorates
Solution Approach 1:
The patent implements bidirectional charging capability that dynamically switches between charging and discharging modes based on power source availability. The system can automatically switch between external power input and battery power output, making the power flow direction flexible rather than fixed, thereby extending battery effective duration while maintaining reasonable system complexity
2Duration of action of moving object
If bidirectional charging is implemented, then the battery effective duration is extended, but the system complexity increases
Solution Approach 1:
The patent designs a power management system that performs multiple functions: it can charge from external power sources, discharge to external devices, and automatically switch between these modes. The control unit integrates multiple functions (detection, switching, protection) into a single system, achieving bidirectional charging capability without proportionally increasing overall system complexity
3Power
If the battery provides transmitting power continuously, then the wireless charging function is maintained, but the electricity efficiency is reduced
Solution Approach 1:
The patent implements a control unit that detects power source availability and automatically switches between external power input and battery power output. This feedback mechanism ensures the battery only provides transmitting power when necessary (when no external power is available), preventing continuous battery discharge and improving overall electricity efficiency while maintaining wireless charging functionality
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 device extends battery life and enhances electricity efficiency by enabling bidirectional charging, effectively increasing the effective duration of battery power and improving charging efficiency for handheld devices and loadings.
Implementation Method 1
a wireless transmission unit electrically connects to the logic control unit
Implementation Method 2
transform the alternating current which received by the wireless transmitting unit to the direct current by the full-bridge converter
Implementation Method 3
set down the voltage of the direct current by the buck-boost unit
Implementation Method 4
a battery electrically connects to the battery terminal of the discharging switch unit
Data Source
AI summary
A bypass control bidirectional wireless charging device provides bidirectional charging mode, in which includes a logic control unit electrically connected to a wireless transmission unit, a full-bridge inverter, a buck-boost unit, a discharging switch unit, a back current prevention unit and a selective switch unit. While the wireless discharging mode started, the discharging switch unit turned on and the battery provided the transmitting power. While the back current prevention device connected to an external power, the discharging switch unit turned off and the back current prevention device turned off to provide the transmitting power by the battery. While the wireless charging mode started, the handheld devices or the loadings were charged by the wireless charging to achieve the purpose of increasing the effective duration of the battery and the electricity efficiency.