Cable-Type Battery Wireless Charging via Wound Outer Current Collector

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Solution Overview

Problem

Conventional secondary batteries face challenges in shape adaptability and efficient charging due to their fixed cylindrical or prismatic shapes, leading to difficulties in electron flow and increased resistance during high-speed charging.

Innovation Solution

A cable-type secondary battery design featuring a core with a non-aqueous or gel polymer electrolyte, an open-structured inner current collector, a separation layer, and a wound outer current collector, along with a diode connector for wireless charging, allowing for flexible shape and efficient current induction without wires.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional wire-based charging is used, then charging can be performed at contact sites, but charging efficiency is reduced and resistance increases during high-speed charging

Engineering Contradiction:

Improvecharging efficiencyVSAvoidresistance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent replaces the mechanical wire-based charging system with a wireless electromagnetic induction system. The transmitter coil generates a magnetic field that induces current in the receiver coil, eliminating physical contact and reducing resistance-related charging losses.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces electromagnetic fields as an intermediary medium for energy transfer between the charging device and battery. The transmitter and receiver coils act as mediators, converting electrical energy to magnetic energy and back, enabling efficient wireless power transfer.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If linear battery shape is used, then shape adaptability is improved, but electron flow becomes difficult due to large surface area to volume ratio

Engineering Contradiction:

Improveshape adaptabilityVSAvoidelectron flow

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent transitions from traditional 3D cylindrical/prismatic battery shapes to a 1D linear cable structure. This dimensional change enables flexible shaping while maintaining optimal electrode surface area to volume ratio for efficient electron flow throughout the battery.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The linear battery is segmented into multiple electrode sections along its length, with current collectors distributed throughout. This segmentation allows electron flow paths to be optimized at multiple points along the battery, preventing bottlenecks despite the linear configuration.

Inventive Principle:

Principle #1Segmentation

3Ease of manufacture

If fixed cylindrical or prismatic shape is used, then fabrication is simplified, but adaptability to various mobile device shapes is limited

Engineering Contradiction:

Improvefabrication simplicityVSAvoidshape adaptability

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent creates a dynamic, flexible battery structure that can be bent, folded, and configured into various shapes while maintaining structural integrity and electrical connectivity. The linear cable design with flexible current collectors enables adaptation to different device form factors.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The linear battery design serves multiple functions: it provides energy storage, enables flexible shaping, facilitates wireless charging, and can be integrated into various device configurations. This universal design replaces the need for different battery shapes for different devices.

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

Enables convenient wireless charging and improved charge distribution, overcoming local charge issues and simplifying battery configuration by using an external magnetic field for current generation.

Implementation Method 1

a connector having a diode which electrically connects the inner current collector and the outer current collector therebetween

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

a cable-type secondary battery capable of wireless charge... capable of wireless charge by inducing a current within the battery without wires

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS9130235B2Cable-type secondary battery capable of wireless charge

Publication Date: 2015.09.08 LG ENERGY SOLUTION LTD

AI summary

The present invention provides a cable-type secondary battery capable of wireless charge. The cable-type secondary battery according to the present invention can be applied in a wireless charging method, thereby being conveniently charged as compared with conventional batteries which are charged with wires, and has an outer current collector configured in a wound form, which can overcome the problem of local charge caused by the shape of conventional cable-type batteries. Also, the outer current collector configured in a wound form acts as a current of electrodes, and also can act as a charger which generates a current by external magnetic field, thereby simplifying battery configuration.