Wireless Power Receiver Antenna Orientation and Battery Warning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless power receivers face challenges in optimizing antenna orientation for efficient RF signal reception, particularly when integrated into cylindrical housings, leading to suboptimal power transfer and sudden voltage drops when not recharged, which can result in instantaneous battery depletion without warning.
Innovation Solution
The integration of a wireless power receiver with a voltage monitor/controller that simulates a low-battery discharge curve and the use of memory metal to automatically orient the antenna for improved signal reception, along with mechanical locking mechanisms and RF shielding to enhance power transfer and security features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the wireless power receiver is integrated into a cylindrical housing, then the device is compact and portable, but the antenna orientation cannot be optimized for efficient RF signal reception
Solution Approach 1:
The patent employs a shape memory alloy mechanism that allows the antenna to dynamically change its orientation within the cylindrical housing. The antenna can be positioned in different angular positions to optimize RF signal reception while maintaining the compact cylindrical form factor, thus resolving the contradiction between compactness and power transfer efficiency.
Solution Approach 2:
The antenna system is divided into multiple segments or positions, allowing selective activation of different antenna orientations. This segmentation enables the system to choose the optimal antenna position for signal reception while maintaining the overall compact cylindrical structure.
2Ease of operation
If the wireless power receiver relies on RF signal reception, then wireless power transfer is achieved, but sudden voltage drops occur when out of range leading to instantaneous battery depletion
Solution Approach 1:
The voltage monitor/controller continuously monitors battery voltage and predicts depletion trends before complete battery exhaustion occurs. By detecting early signs of voltage drop and providing advance warning to the user, the system allows for proactive recharging before instantaneous depletion happens, thus maintaining power supply reliability.
Solution Approach 2:
The system implements continuous feedback through voltage monitoring that provides real-time information about battery status. This feedback mechanism enables the system to respond to changing power conditions and alert users before critical depletion occurs, preventing sudden power loss.
3Device complexity
If the antenna is fixed in a specific orientation, then the device structure is simple, but RF signal reception efficiency is suboptimal
Solution Approach 1:
The patent changes the orientation parameter of the antenna using a shape memory alloy mechanism. This allows the antenna to adjust its angular position to optimize signal reception while keeping the mechanical structure relatively simple, balancing device complexity with reception efficiency.
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
This solution ensures stable and efficient wireless power reception, prevents sudden battery depletion by simulating a low-battery warning, and provides secure and remote control over device usage through improved antenna orientation and voltage management.
Implementation Method 1
a wireless power receiver comprises an antenna (one or more antenna elements) and circuitry that converts RF signals received via the antenna into power
Implementation Method 2
The integration of a wireless power receiver with a voltage monitor/controller that simulates a low-battery discharge curve
Implementation Method 3
the use of memory metal to automatically orient the antenna for improved signal reception
Data Source
AI summary
Wireless power receivers are described, which are used in conjunction with a wireless power transmission system. For instance, a wireless power receiver is provided comprising an antenna configured to receive wireless power signals from a wireless power signal transmitter. The antenna can be coupled to wireless power circuitry that delivers power based on the wireless power signals received by the antenna. Further, a module is provided that contains the wireless power receiver and couples to a device powered by the wireless power circuitry. Further, the module is configured to couple to the device in a fixed position that affixes an orientation of the antenna relative to the device.