Miniature Wireless Power Receiver Module With RFID Proximity Detection
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Solution Overview
Problem
The complexity of designing wireless power receivers is increased by the need for separate customized designs of antennas, system components, and battery integration, and there is no mechanism for a wireless charging device to detect the presence of a receiver in proximity for charging.
Innovation Solution
A miniature wireless power receiver module integrates a radio frequency charge energy receiving antenna, magnetic material, battery, and RFID proximity detection into a single module, allowing communication with a wireless charging device and optimizing charging efficiency by isolating the receiver electromagnetically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate customized designs are used for antennas, system components, and battery integration, then each component can be optimized for its specific function, but the overall design process becomes lengthy and complicated
Solution Approach 1:
The patent combines the antenna, matching circuit, EMI filter, communication circuit, microcontroller, voltage rectifier, voltage regulator, charging circuit, and battery into a single integrated wireless power receiver module. This integration maintains the functional optimization of each component while simplifying the overall design process by providing a pre-assembled, modular unit that reduces the number of separate customization tasks required.
2Device complexity
If standard wireless power receiver components are used, then the design process is simplified, but there is no mechanism for the charging device to detect the presence of the receiver in proximity
Solution Approach 1:
The integrated wireless power receiver module incorporates multiple functions including power reception, electromagnetic interference filtering, communication, and RFID-based proximity detection. The RFID circuit is integrated alongside the power receiving components, allowing the same module to both receive wireless power and provide presence detection, thereby eliminating the need for separate detection mechanisms while maintaining design simplicity.
3Adaptability or versatility
If multiple separate systems are integrated into one receiver, then functionality is improved, but electromagnetic interference increases
Solution Approach 1:
The patent extracts and isolates the EMI filter as a separate functional block within the integrated module, positioned between the antenna/matching circuit and the communication circuit/microcontroller. This extraction of the filtering function from the general integration and its placement at critical signal paths effectively removes electromagnetic interference from the system while maintaining the benefits of overall component integration.
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 integration simplifies the design and packaging of wireless power receivers, enables efficient charging by detecting proximity, and allows the module to be adaptable to various devices, enhancing charging efficiency and ease of implementation.
Implementation Method 1
a radio frequency charge energy receiving antenna
Implementation Method 2
magnetic material, allowing communication with a wireless charging device and optimizing charging efficiency by isolating the receiver electromagnetically
Implementation Method 3
an RFID antenna electrically coupled to the circuit card assembly and positioned adjacent to the battery, wherein the RFID antenna and circuitry are operable to identify to a wireless charging device the presence of the battery
Data Source
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AI summary
An apparatus for wirelessly receiving power comprises a battery at least partially covered by magnetic material and a radio frequency (RF) charge energy receiving antenna surrounding the magnetic material and electrically coupled to the battery through a circuit card assembly (CCA).