Wireless Power Transmitter Slot Allocation for Multi-Receiver Communication
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Solution Overview
Problem
Current wireless power transmission technologies face challenges in distinguishing and communicating with multiple wireless power receivers simultaneously, limiting the efficiency and interoperability of one-to-many charging systems.
Innovation Solution
A wireless power transmission method and system that uses a power converter with multiple slots to transmit power and receive information, including a slot number assigned to each receiver, allowing for communication and control through multiple slots, enabling recognition of the source of information and efficient power transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless power transmitter uses traditional communication method with single slot, then communication with one receiver is simple, but it cannot distinguish and communicate with multiple receivers simultaneously
Solution Approach 1:
The communication interface is segmented into multiple slots, where each slot is assigned to a specific receiver. This segmentation allows the transmitter to distinguish between multiple receivers and communicate with them simultaneously, resolving the contradiction between multi-receiver capability and system complexity.
2Productivity
If wireless power transmitter supports one-to-many charging, then charging efficiency improves, but difficulty in distinguishing and communicating with multiple receivers increases
Solution Approach 1:
The patent introduces a temporal dimension by organizing communication into time-divided slots. Each receiver is assigned a specific slot, allowing the transmitter to identify and communicate with multiple receivers in sequence without interference, thus improving charging efficiency while maintaining manageable receiver identification complexity.
3Measurement precision
If multiple slots are introduced for multi-receiver communication, then receiver distinction capability improves, but communication protocol complexity increases
Solution Approach 1:
The communication protocol uses periodic time slots to interact with different receivers. Each slot follows a standardized structure with specific timing, allowing the transmitter to systematically identify and communicate with multiple receivers. This periodic structure improves identification accuracy while keeping the protocol manageable through repetition and predictability.
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 efficient communication and power transfer to multiple wireless power receivers, improving interoperability and addressing the challenge of distinguishing between receivers, thus enhancing the efficiency of one-to-many charging systems.
Implementation Method 1
a power converter (111) consisting of at least one coil to convert a current into a magnetic field
Data Source
AI summary
A wireless power transmitter which performs communication with one or more wireless power receivers, includes a power converter including at least one coil configured to convert current into magnetic field, and a power transmission controller configured to communicate with a wireless power receiver based on a frame, wherein the frame includes a sync pattern and a plurality of slots which have different slot numbers respectively, wherein the sync pattern indicates a first slot as allocated to the wireless power receiver, wherein the power transmission controller receives a first packet from the wireless power receiver in the first slot having a first slot number, and receives a second packet from the wireless power receiver in a second slot having a second slot number, and wherein the second packet includes an information field indicating the first slot number.