Wireless Charging Circuit for Bidirectional Tag Communication
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Solution Overview
Problem
Passive electronic tags cannot perform bidirectional communication while being charged, and existing wireless charging circuits have poor compatibility with non-standard charging scenarios, limiting their functionality and user experience.
Innovation Solution
A wireless charging and communication circuit that includes a receiving circuit for wireless energy reception and feedback signal transmission, and a signal processing circuit for processing control signals, enabling bidirectional communication and compatibility with both Qi-standard and non-standard charging scenarios through a simple circuit structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a wireless charging circuit is designed for standard charging protocols, then charging compatibility is improved, but adaptability to non-standard charging scenarios deteriorates
Solution Approach 1:
The wireless charging circuit is designed to perform multiple functions: it can operate in both charging modes (standard and non-standard) and communication modes within a single unified circuit structure. The receiving circuit can function as both a power receiver and a communication transceiver, eliminating the need for separate dedicated circuits for different charging scenarios.
Solution Approach 2:
The patent combines the charging reception function and communication function into a single integrated wireless charging circuit. The receiving circuit processes both power transfer signals and communication signals through the same hardware components, merging what would traditionally require separate circuits into one unified system.
2Adaptability or versatility
If bidirectional communication is added to passive electronic tags, then communication functionality is improved, but device complexity deteriorates
Solution Approach 1:
The receiving circuit in the passive electronic tag is designed to serve dual purposes: receiving wireless power and enabling bidirectional communication. By making the receiving circuit multi-functional, the patent avoids adding separate communication hardware, thus improving communication capability without proportionally increasing device complexity.
Solution Approach 2:
The patent merges the power reception function and communication function into the same receiving circuit. The circuit processes both types of signals through shared hardware components, combining what would traditionally require separate dedicated circuits into one unified system.
3Ease of operation
If continuous power supply is provided to electronic ink screens, then display functionality is improved, but energy consumption deteriorates
Solution Approach 1:
Instead of continuous power supply, the electronic ink screen is powered periodically only when data transmission or screen updating is required. The wireless charging circuit activates power delivery to the screen in periodic intervals synchronized with communication or display update needs, rather than maintaining continuous power supply.
Solution Approach 2:
The system intelligently determines when power is needed for the electronic ink screen based on communication requirements and display state, activating power supply only when necessary. This self-regulating approach ensures the screen maintains functionality while minimizing energy consumption by avoiding unnecessary continuous power delivery.
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 real-time charging state monitoring and data transmission during charging, improves compatibility across different charging scenarios, and conserves energy by powering only when necessary for electronic ink screens.
Implementation Method 1
a receiving circuit, configured to receive electric energy wirelessly transmitted by a transmitting circuit
Implementation Method 2
a rectification circuit, configured to convert the electric energy into a direct-current voltage
Data Source
AI summary
A charging circuit and an electronic device are provided. The charging circuit includes a transmitting circuit. The transmitting circuit is configured to wirelessly transmit electric energy to a receiving circuit, receive a feedback signal of the receiving circuit, and wirelessly transmit a control signal to the receiving circuit.