Wireless Charging Mode Control for Heat-Limited Charge Time

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Wireless charging in electronic devices often results in prolonged cooling periods and frequent switching between cooling and charging periods, leading to increased total charging time and decreased efficiency due to overheating.

Innovation Solution

An electronic device equipped with a wireless charging circuit, sensors, and a processor that monitors temperature and adjusts charging conditions, such as power levels and charging paths, to manage heat generation and optimize charging duration, switching from high-speed to normal charging modes as necessary.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If wireless charging is performed at high power to reduce charging time, then charging speed is improved, but heat generation increases causing prolonged cooling periods and frequent switching between charging and cooling modes

Engineering Contradiction:

Improvecharging speedVSAvoiddevice temperature

Core Design Contradiction:

SpeedVSTemperature

Solution Approach 1:

The patent implements dynamic adjustment of charging power based on real-time temperature monitoring. The processor continuously monitors temperature during wireless charging and dynamically changes charging conditions (power levels, charging paths) to optimize between charging speed and heat management, preventing excessive heat generation while maintaining efficient charging.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes physical parameters (charging power, charging current, charging voltage, charging interval) based on temperature conditions. When temperature exceeds thresholds, the system adjusts these parameters to reduce heat generation; when temperature is acceptable, it increases parameters to accelerate charging, thus resolving the contradiction between speed and temperature.

Inventive Principle:

Principle #35Parameter changes

2Temperature

If cooling control is implemented to manage heat during wireless charging, then temperature is controlled, but total charging time increases due to prolonged cooling periods and frequent switching between cooling and charging modes

Engineering Contradiction:

Improvedevice temperatureVSAvoidtotal charging time

Core Design Contradiction:

TemperatureVSLoss of time

Solution Approach 1:

The patent performs preliminary temperature assessment before initiating high-power charging and continuously monitors temperature during charging. By predicting temperature trends and taking preventive actions (adjusting power levels, changing charging paths) before excessive heat accumulates, the system avoids prolonged cooling periods while maintaining safe operating temperatures.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements a feedback control mechanism where the processor continuously monitors temperature and charging duration, then adjusts charging conditions based on this feedback. When temperature rises, the system reduces power or switches charging paths; when temperature stabilizes, it resumes higher power charging, thereby minimizing cooling periods while maintaining temperature control.

Inventive Principle:

Principle #23Feedback

3Productivity

If charging is continued at high power for extended periods to achieve full charge quickly, then charging efficiency is improved, but heat generation becomes difficult to dismiss and cooling requirements increase

Engineering Contradiction:

Improvecharging efficiencyVSAvoidheat generation

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent implements periodic monitoring and adjustment of charging parameters based on temperature conditions. Instead of continuous high-power charging, the system uses periodic temperature checks and adjusts power levels accordingly, creating a rhythm of high-power charging intervals separated by lower-power intervals when temperature rises, thus maintaining efficiency while managing heat generation.

Inventive Principle:

Principle #19Periodic 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

This approach prevents prolonged cooling periods, reduces total charging time, and enhances charging efficiency by dynamically adjusting charging conditions based on temperature and charging duration.

Implementation Method 1

the electronic device may charge a battery of the electronic device by using magnetic resonance or electromagnetic induction occurring between a power transmitting unit (PTU) and a wireless power receiving unit (PRU)

Methodology Applied

Scientific EffectMagnetic resonance: Resonance

Implementation Method 2

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 3

sense a temperature of the electronic device via the at least one sensor

Methodology Applied

Scientific EffectTemperature sensing:

Data Source

PatentUS20240030738A1Electronic apparatus having wireless charging function, and control method therefor

Publication Date: 2024.01.25 SAMSUNG ELECTRONICS CO LTD

AI summary

An electronic device includes: a wireless charging circuit; at least one sensor; and at least one processor operatively connected to the wireless charging circuit and the at least one sensor. The at least one processor is configured to: perform charging using the wireless charging circuit; sense a temperature of the electronic device via the at least one sensor; control, based on the temperature of the electronic device, heat generation during the charging; and change a charging condition based on a charging duration time determined based on the heat controlled by the at least one processor.