Dual-Battery Wireless Charging Control via Temperature Adaptation

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Solution Overview

Problem

Current wireless charging technologies for dual battery smartphones lack effective control over charging processes, particularly in managing temperature and balancing battery charging rates, which can lead to inefficiencies and safety concerns.

Innovation Solution

A wireless charging system for dual battery mobile terminals that includes a wireless receive module, a charging control module with temperature detection and power supply switching units, allowing for adaptive charging modes based on temperature, enabling simultaneous or individual charging of batteries to optimize safety and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If wireless charging is used for dual battery smartphones, then charging convenience is improved, but temperature control and charging safety deteriorate

Engineering Contradiction:
Improvecharging convenienceVSAvoidcharging safety
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent implements dynamic charging control by switching between different charging modes (first charging mode for single battery, second charging mode for dual battery) based on temperature detection. The control unit dynamically adjusts which battery receives power and at what rate, ensuring safety while maintaining convenience. Temperature sensors continuously monitor the device, and the system adapts its charging behavior in real-time to prevent overheating.

Inventive Principle:
Principle #15Dynamics

2Duration of action of moving object

If dual battery charging is implemented, then battery life is extended, but charging control complexity increases

Engineering Contradiction:
Improvebattery lifeVSAvoidcharging control complexity
Core Design Contradiction:
Duration of action of moving objectVSDevice complexity

Solution Approach 1:

The patent segments the charging control into distinct modules: a first charging control unit for the first battery, a second charging control unit for the second battery, and a master control unit that coordinates them. This segmentation allows independent control of each battery while maintaining overall system management, reducing the complexity burden compared to a fully integrated control system.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system dynamically switches between different charging configurations: charging only the first battery, charging only the second battery, or charging both batteries simultaneously in coordinated fashion. This dynamic adaptability allows the system to optimize battery life based on usage patterns while keeping the control logic manageable through clear state transitions.

Inventive Principle:
Principle #15Dynamics

3Productivity

If simultaneous dual battery charging is enabled, then charging efficiency is improved, but temperature management becomes difficult

Engineering Contradiction:
Improvecharging efficiencyVSAvoidtemperature management
Core Design Contradiction:
ProductivityVSTemperature

Solution Approach 1:

The patent employs dynamic temperature monitoring and adaptive charging mode switching. When temperature thresholds are exceeded during simultaneous charging, the control unit automatically transitions to a safer charging mode (charging only one battery or reducing power). This dynamic response maintains charging efficiency when conditions permit while ensuring temperature management safety when needed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system implements feedback control through temperature sensors that continuously monitor thermal conditions during charging. The control unit receives temperature feedback and adjusts charging parameters accordingly, reducing or stopping simultaneous charging when temperature limits are approached. This closed-loop feedback mechanism balances charging efficiency with temperature management.

Inventive Principle:
Principle #23Feedback

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

The system ensures safe and reliable charging by adjusting charging modes based on temperature, preventing overheating and improving charging efficiency by allowing simultaneous or individual charging of batteries, thus enhancing the safety and reliability of the charging process.

Implementation Method 1

wireless charging technology (achieved by an electromagnetic induction mode)

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentEP3518370B1Dual-battery mobile terminal and wireless charging system thereof
Publication Date: 2020.09.30 JRD COMM (SHENZHEN) LTD
  • EP3518370B1 patent drawingFigure 1
  • EP3518370B1 patent drawingFigure 2

AI summary

A dual battery mobile terminal and a wireless charging system are provided. The wireless charging system includes a main battery, a secondary battery, a wireless receive module and a charging control module. The wireless receive module senses a wireless charging signal, and converts the sensed wireless charging signal into a voltage and current signal. The charging control module in turn outputs the voltage and current signal outputted from the wireless receive module to charge the main battery or the secondary battery individually, or output the voltage and current signal to charge the main battery and the secondary battery simultaneously. Thereby, the control of the dual battery charging may be achieved.