Wireless Power Transmitter Dynamic Parameter Adaptation

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Solution Overview

Problem

Conventional wireless power transfer systems abruptly shut off due to variations in operating conditions such as temperature and power source characteristics, leading to interruptions in power delivery, especially in automotive applications where ambient conditions can be unpredictable.

Innovation Solution

A wireless power transmitter that monitors its operating conditions and adapts wireless power transfer parameters by reducing or adjusting the charging rate and power levels to maintain uninterrupted power transmission, communicating with the receiver to manage power capabilities and operating conditions, thereby preventing abrupt shutdowns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the wireless power transmitter operates at high power levels, then the charging rate is improved, but the internal temperature increases and may exceed maximum operating temperature

Engineering Contradiction:

Improvecharging rateVSAvoidinternal temperature

Core Design Contradiction:

ProductivityVSTemperature

Solution Approach 1:

The patent implements dynamic adjustment of power transmission parameters based on real-time monitoring of internal temperature and operating conditions. The controller continuously adapts the charging rate by modifying power transmission levels, transitioning from static high-power operation to dynamic variable-power operation that maintains high charging rates within safe temperature boundaries.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes operating parameters (power transmission levels, charging rates) in response to measured internal temperature and environmental conditions. By adjusting these parameters dynamically, the system optimizes charging performance while preventing temperature from exceeding maximum operating limits.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If the wireless power transmitter operates in varying ambient conditions, then the adaptability is improved, but the system stability deteriorates due to unpredictable environmental changes

Engineering Contradiction:

Improveadaptability to ambient conditionsVSAvoidsystem stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent employs feedback mechanisms where sensors continuously monitor internal temperature, ambient conditions, and power transmission parameters. This feedback loop enables the controller to detect changes in operating conditions and automatically adjust power transmission levels, maintaining system stability despite varying environmental factors.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system performs self-adjustment by autonomously monitoring its own operating conditions and making real-time modifications to power transmission parameters without external intervention. This self-service capability enables the transmitter to adapt to changing ambient conditions while maintaining stable operation.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If the wireless power transmitter uses a battery as power source, then the portability is improved, but the operating duration is limited by battery capacity

Engineering Contradiction:

ImproveportabilityVSAvoidoperating duration

Core Design Contradiction:

Ease of operationVSDuration of action of moving object

Solution Approach 1:

The system performs preliminary monitoring of battery charge levels and power consumption patterns to predict remaining operating duration. By proactively managing power transmission based on battery status, the system extends effective operating duration while maintaining portability benefits.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements partial power transmission adjustments based on battery capacity, reducing power output when battery levels indicate limited remaining duration. This partial action approach extends operating duration by matching power transmission to available battery capacity, rather than maintaining maximum output throughout.

Inventive Principle:

Principle #16Partial or excessive action

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 continuous wireless power transfer by dynamically adjusting power levels and charging rates in response to changing operating conditions, preventing system shutdowns and maintaining reliable power delivery across varying temperatures and environmental changes.

Implementation Method 1

Both types of systems include a wireless power transmitter and a wireless power receiver

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentEP3425769B1Adapting wireless power transfer parameters to transmitter operating conditions

Publication Date: 2022.08.03 MEDIATEK SINGAPORE PTE LTD

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AI summary

A wireless power transmitter and/or receiver and methods for operating the same are provided for maintaining an uninterrupted wireless power transfer. A wireless power transmitter and/or receiver adapt at least one wireless power transfer parameter according to at least one operating condition of the wireless power transmitter.