Foldable Electronic Device With Dual-Battery Power Sharing

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Portable electronic devices face challenges in reducing size and weight while maintaining high-capacity batteries, leading to increased power consumption and heat generation, which affects performance and safety.

Innovation Solution

The implementation of a portable electronic device with multiple small-sized batteries and a power management circuit that allows for wireless charging and power distribution among batteries, enabling selective use of batteries based on need and monitoring their state to optimize power usage and extend device functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If a high-capacity battery is incorporated to withstand extended use, then the battery capacity is improved, but the size and weight of the electronic device become large

Engineering Contradiction:
Improvebattery capacityVSAvoiddevice weight
Core Design Contradiction:
Duration of action of moving objectVSWeight of moving object

Solution Approach 1:

The patent divides the single high-capacity battery into multiple small-sized batteries distributed across different components (CPU, display portion, touch input portion). This segmentation allows the device to achieve extended operational duration through multiple power sources while keeping each individual battery small and lightweight, thus resolving the contradiction between battery capacity and device weight.

Inventive Principle:
Principle #1Segmentation

2Volume of moving object

If the electronic device is reduced in size and thickness, then the portability is improved, but the battery capacity is reduced

Engineering Contradiction:
Improvedevice volumeVSAvoidbattery capacity
Core Design Contradiction:
Volume of moving objectVSDuration of action of moving object

Solution Approach 1:

By segmenting the power system into multiple small batteries integrated within existing components, the patent enables the device to maintain a compact form factor while collectively providing sufficient total battery capacity for extended use.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Each component (CPU, display portion, touch input portion) serves dual functions: performing its primary operational function while also housing a battery and participating in wireless power transmission. This multi-functionality allows the device to be compact while maintaining adequate power capacity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If a battery is provided in each component, then the power distribution flexibility is improved, but the device complexity is increased

Engineering Contradiction:
Improvepower distribution flexibilityVSAvoidsystem complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Each component is designed with multi-functionality, housing both operational elements and battery units, and participating in wireless power transmission. This universal design provides flexible power distribution while avoiding the complexity of separate dedicated battery management systems for each component.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The power management circuit automatically monitors battery states and performs wireless power transmission between components without requiring complex manual intervention or control systems, thereby achieving flexible power distribution with minimal added complexity.

Inventive Principle:
Principle #25Self-service

4Volume of moving object

If multiple small-sized batteries are used, then the device size is reduced, but the power consumption management becomes complex

Engineering Contradiction:
Improvedevice sizeVSAvoidpower management complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The power management circuit autonomously monitors the charge states of multiple small batteries and automatically performs wireless power transmission from charged batteries to depleted ones, eliminating the need for complex manual power management while maintaining compact device size.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The power management circuit continuously monitors battery states and uses this feedback information to dynamically control wireless power transmission, optimizing power distribution across multiple small batteries without requiring complex external management systems.

Inventive Principle:
Principle #23Feedback

5Productivity

If wireless power transmission is implemented between batteries, then the power distribution efficiency is improved, but the heat generation is increased

Engineering Contradiction:
Improvepower distribution efficiencyVSAvoidheat generation
Core Design Contradiction:
ProductivityVSTemperature

Solution Approach 1:

The power management circuit acts as an intermediary that controls and regulates wireless power transmission between batteries, optimizing transfer efficiency while managing heat generation through intelligent power flow control and monitoring.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 solution allows for a compact, efficient, and safe electronic device with extended battery life, reduced power consumption, and enhanced reliability by managing power distribution and battery health, ensuring continuous functionality even if one battery fails.

Implementation Method 1

The first receiving portion has a function of wirelessly charging the first battery. The second receiving portion has a function of wirelessly charging the second battery.

Methodology Applied
Scientific EffectWireless charging: Electromagnetic Induction

Implementation Method 2

The power management circuit has a function of wirelessly transmitting power of one of the first battery and the second battery to the other so that the battery is charged.

Methodology Applied
Scientific EffectWireless power transmission: Electromagnetic Induction

Implementation Method 3

a first transmitting portion and a second transmitting portion... The first receiving portion has a function of wirelessly charging the first battery.

Methodology Applied
Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS11899886B2Electronic device
Publication Date: 2024.02.13 SEMICON ENERGY LAB CO LTD
  • US11899886B2 patent drawing
  • US11899886B2 patent drawing
  • US11899886B2 patent drawing

AI summary

An electronic device having a novel structure is provided. A battery is provided in each component of an electronic device, whereby the electronic device includes two batteries. The electronic device including the two batteries and a display portion that can be called a flexible display and has a plurality of foldable portions is provided as a novel device.