Wireless Power Notification for Multi-Device Charging
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Solution Overview
Problem
Users of wireless power transfer systems cannot determine if an additional power receiving device can be charged when the power transmission device is already transmitting power to the maximum number of devices, leading to inefficient charging and potential overheating due to low power transmission efficiency.
Innovation Solution
A wireless power transfer device with a notification unit that alerts users via LED lights, audio, or vibrations whether an additional power receiving device can be charged, indicating the availability of power transmission by distinguishing between available and unavailable states, allowing users to select an appropriate power transmission device before placing the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the power transmission device transmits power to the maximum number of power receiving devices, then the power transmission capacity is fully utilized, but the user cannot recognize that additional power receiving devices cannot be appropriately charged
Solution Approach 1:
The notification unit provides advance notification to the user about the charging status before the user attempts to charge additional devices. When the power transmission device is already transmitting power to the maximum number of devices, the notification unit notifies the user in advance that additional devices cannot be charged, allowing the user to take preliminary action by selecting a different power transmission device before attempting charging.
Solution Approach 2:
The notification unit provides feedback to the user about the current power transmission status. By notifying the user whether additional power receiving devices can be charged or not, the system creates a feedback loop that informs users about the system's capacity utilization, enabling them to make informed decisions about where to place additional devices.
2Productivity
If the power transmission device allows multiple power receiving devices to be charged simultaneously, then the charging efficiency increases, but the device complexity increases
Solution Approach 1:
The power transmission device automatically manages power allocation to multiple receiving devices without requiring user intervention. The control unit automatically detects when the maximum number of devices is being charged and triggers the notification unit, allowing the system to self-manage its capacity utilization while maintaining high charging efficiency through simultaneous multi-device operation.
3Ease of operation
If the user places additional power receiving devices without checking availability, then the ease of operation increases, but the reliability of power transmission decreases
Solution Approach 1:
The notification unit performs preliminary notification about charging availability before the user attempts to charge additional devices. This allows users to maintain the simple action of placing devices while the system proactively informs them of capacity constraints, preventing unsuccessful charging attempts without requiring users to check availability manually.
Solution Approach 2:
The system provides immediate feedback to users about whether additional devices can be charged by the notification unit. This feedback mechanism maintains operational simplicity by allowing users to freely place devices while simultaneously ensuring reliability by informing users of power transmission constraints, thus preventing placement of devices that cannot be charged.
Data Source
AI summary
A wireless power transfer device includes a wireless power transfer unit that wirelessly transfers power to a plurality of other devices and a notification unit that provides notification that wireless power transfer to a third wireless power transfer device different from a second wireless power transfer device is not available or provides notification that the wireless power transfer to the third wireless power transfer device is available in the case where wireless power transfer to the second wireless power transfer device is performed.