Wireless Power Receiver Communication Re-initialization During Charging

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Solution Overview

Problem

Current wireless charging technologies lack standardized methods for wireless power transmitting and receiving units to manage power distribution efficiently among multiple devices and adapt to environmental changes, such as mode transitions, without disrupting charging processes.

Innovation Solution

A control method and system that enables wireless power transmitting and receiving units to establish communication connections, manage power transmission, and adapt to mode transitions by using non-contact short-range wireless communication, allowing for efficient charging and error handling through message exchange and power management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If wireless power transmitting unit uses resonance scheme to charge multiple wireless power receiving units simultaneously, then charging efficiency is improved, but power distribution management becomes complex and unreliable

Engineering Contradiction:

Improvecharging efficiencyVSAvoidpower distribution management

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements a feedback mechanism where wireless power receiving units transmit environment change information (such as mode transition status) back to the wireless power transmitting unit. This feedback allows the transmitting unit to adjust power distribution dynamically, ensuring reliable management when charging multiple devices simultaneously through resonance coupling.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system dynamically adjusts power transmission parameters based on real-time environment changes detected by the receiving units. When mode transitions occur (such as changing from wireless to wired charging), the system adapts power distribution accordingly, maintaining reliability while preserving charging efficiency through multiple receiving units.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If wireless power receiving unit detects environment change and notifies transmitting unit, then adaptability to mode transitions is improved, but communication complexity increases

Engineering Contradiction:

Improveadaptability to mode transitionsVSAvoidcommunication complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines power transmission and communication functions into a unified wireless communication protocol. Environment change notifications are transmitted using the same communication channel already established for power management, eliminating the need for separate communication modules and reducing overall system complexity while maintaining high adaptability to mode transitions.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If separate communication modules are added to wireless power units, then communication reliability is improved, but manufacturing costs increase

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidmanufacturing costs

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent implements a multi-functional communication module that handles both power transmission control and environment change notification functions through a single unified protocol. This eliminates the need for separate communication modules, reducing manufacturing costs while maintaining communication reliability through integrated error handling and acknowledgment mechanisms.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Ensures efficient power distribution and adaptability to environmental changes, reducing manufacturing costs by eliminating the need for separate communication modules and enhancing charging reliability by maintaining connections during mode transitions.

Implementation Method 1

charging using a resonance scheme is performed as follows. When a wireless power receiving unit (for example, a portable terminal) requiring charging is located on a wireless power transmitting unit (for example, a charging pad) transmitting wireless power

Methodology Applied

Scientific EffectResonance: Resonance

Data Source

PatentUS10923961B2Wireless power transmitting unit, wireless power receiving unit, and control methods thereof

Publication Date: 2021.02.16 SAMSUNG ELECTRONICS CO LTD

AI summary

A control method of a wireless power receiver is provided. The control method includes wirelessly receiving a first power from a wireless power transmitter; based on the received first power, loading a first communication stack from a memory stored in a communication module of the wireless power receiver; establishing a communication connection with the wireless power transmitter based on the first communication stack; wirelessly receiving a second power from the wireless power transmitter; based on residual capacity of a battery of the wireless power receiver exceeding a minimum power threshold according to the received second power, determining to re-initialize the communication connection with the wireless power transmitter; transmitting a message including a time period required to complete at least one procedure for re-initializing the communication connection with the wireless power transmitter; and wirelessly receiving the second power from the wireless power transmitter while re-initializing the communication connection with the wireless power transmitter.