Bi-directional Wireless Charger with Dynamic Power Control
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Solution Overview
Problem
The inconvenience of recharging electronic devices using wired connections, which can be cumbersome due to the difficulty in finding the proper cord and available outlets, necessitates a more convenient method for continuous charging throughout the day.
Innovation Solution
A bi-directional charging device that can wirelessly receive and deliver power, allowing it to be recharged in a charging bay and then use that power to charge other devices, eliminating the need for physical cords and outlets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wired connections are used for recharging, then power transfer is reliable and efficient, but convenience and ease of operation deteriorate due to the need to find cords and outlets
Solution Approach 1:
The patent replaces the mechanical wired connection system with a wireless electromagnetic field-based power transfer system. The bi-directional charging device uses electromagnetic induction to transfer power without physical contact, eliminating the need for plugging and unplugging cords, thereby improving convenience while maintaining reliable power transfer.
Solution Approach 2:
The patent introduces an intermediary bi-directional charging device that acts as a mediator between the charging bay and electronic devices. This device wirelessly receives power from the charging bay and then wirelessly transmits power to electronic devices, eliminating the need for direct wired connections and improving ease of operation.
2Ease of operation
If wireless power transfer is implemented, then convenience and flexibility improve, but power transfer efficiency and reliability may worsen compared to wired connections
Solution Approach 1:
The patent employs dynamic adjustment of power transfer parameters including frequency, power level, and coupling strength based on real-time detection of device presence, distance, and charging status. This dynamic optimization minimizes energy loss while maintaining flexible wireless operation.
Solution Approach 2:
The bi-directional charging device incorporates feedback mechanisms that continuously monitor power transfer efficiency, device battery status, and electromagnetic field coupling. Based on this feedback, the system automatically adjusts transmission parameters to optimize efficiency and reduce energy loss, addressing the potential efficiency degradation of wireless power transfer.
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 continuous charging of electronic devices without the need for physical connections, providing convenience and flexibility in recharging devices throughout the day by using wireless power transfer between bi-directional charging devices and charging bays.
Implementation Method 1
A bi-directional charging device may wirelessly receive power for recharging an internal rechargeable battery, and may wirelessly deliver power to charge the battery of an external rechargeable electronic device
Implementation Method 2
A bi-directional charging device may wirelessly receive power for recharging an internal rechargeable battery
Data Source
AI summary
A bi-directional charging device includes a rechargeable battery, a coil coupled to the rechargeable battery, a selection mechanism that selectively causes power to be delivered from the coil to the battery and selectively causes power to be delivered from the battery to the coil, and a control mechanism. Upon determining that the coil is to provide power to the battery, the control mechanism causes the selection mechanism to selectively cause power to be delivered from the coil to the battery, and upon determining that the coil is to receive power from the battery, the control mechanism causes the selection mechanism to selectively cause power to be delivered from the battery to the coil.The bi-directional charging device includes a housing enclosing the rechargeable battery, the coil, the selection mechanism, and the control mechanism.