Flexible Solid-State Planar Lithium-Ion Battery Module
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional lithium-ion batteries lack flexibility and versatility in shape and structure, which limits their application in flexible electronic devices, and they often compromise on energy density and charging speed due to internal resistance and material distribution.
Innovation Solution
A flexible solid-state multiple-stacked planar lithium-ion battery module is developed, comprising interconnected electrochemical cells with solid polymer or gel electrolytes, allowing for adjustable output powers and rapid charging by connecting battery groups in series or parallel, and incorporating programmable logic circuits for remote control and efficient energy management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional lithium-ion batteries use traditional liquid electrolytes and standard cell structures, then they achieve high energy density, but they lack flexibility and have limited adaptability to different shapes and applications
Solution Approach 1:
The patent employs flexible thin film structures for battery components including solid electrolyte membranes and electrode layers. These thin films enable the battery to be bent, folded, or shaped without compromising structural integrity or electrochemical performance, directly resolving the contradiction between flexibility and energy density by maintaining high active material content in a flexible form factor
Solution Approach 2:
The battery is divided into multiple independent electrochemical cells that can be stacked or arranged in various configurations. Each cell contains solid electrolyte and can be independently optimized, allowing the overall battery system to achieve both high energy density through efficient stacking and flexibility through modular arrangement
2Reliability
If lithium-ion batteries use solid-state electrolytes, then safety is improved, but internal resistance increases and charging speed decreases
Solution Approach 1:
The patent uses composite solid electrolyte materials combining multiple components (e.g., polymer matrices with ceramic fillers or sulfide compounds) to simultaneously achieve high ionic conductivity for fast charging and inherent safety characteristics of solid-state electrolytes. The composite structure optimizes both safety and charging performance by leveraging the strengths of different materials
Solution Approach 2:
The patent optimizes parameters of solid electrolyte including composition ratios, processing conditions, and microstructure to achieve high ionic conductivity. By carefully controlling parameters such as sintering temperature, density, and phase composition, the solid electrolyte attains charging rates comparable to liquid electrolytes while maintaining superior safety
3Quantity of substance
If multiple electrochemical cells are stacked to increase capacity, then energy density improves, but internal resistance increases and compromises charging performance
Solution Approach 1:
The battery system is segmented into multiple parallel-connected cell groups rather than series connections. Each group contains stacked cells that contribute to total capacity, while the parallel architecture minimizes overall internal resistance. This segmentation strategy allows high capacity accumulation without the quadratic increase in internal resistance that would occur with series stacking
Solution Approach 2:
Instead of increasing capacity solely through vertical stacking (one dimension), the patent employs both stacking and parallel connection arrangements, utilizing multiple spatial dimensions. This multi-dimensional arrangement increases capacity while distributing current pathways to maintain low internal resistance and fast charging capability
4Adaptability or versatility
If flexible thin film structures are used to achieve bendability, then adaptability to wearable devices improves, but structural strength and protection decrease
Solution Approach 1:
The patent employs composite structures combining flexible substrates with protective coating layers. The substrate provides flexibility and bendability, while overlying protective layers (such as aluminum foil, polymer coatings, or ceramic films) provide mechanical strength, puncture resistance, and environmental protection, enabling wearable applications without sacrificing structural integrity
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 module provides high energy density, fast charging capabilities, and enhanced safety due to solid-state electrolytes, while being lightweight and flexible, suitable for wearable devices and energy storage systems, with adjustable output to meet various power requirements.
Implementation Method 1
comprising interconnected electrochemical cells with solid polymer or gel electrolytes
Implementation Method 2
A flexible solid-state multiple-stacked planar lithium-ion battery module is developed, comprising interconnected electrochemical cells
Data Source
AI summary
A flexible solid-state multiple-stacked planar lithium-ion battery module is provided. It comprises a number of lithium-ion battery groups that consist of back-to-back multiple-stacked electrochemical cells interconnected in parallel. Solid electrolytes are used in all of electrochemical cells. The battery groups are packed and sealed with flexible polymeric materials. The battery groups are combined into some battery sections. The positive and negative terminals of every battery group are connected to corresponding side terminals which are controlled with side switches. The positive terminals of the first battery groups in every battery section and the negative terminals of the last battery groups in every battery section are further connected to a positive rotary switch and a negative rotary switch, respectively. With these different switches and circuit control boxes, input and output voltages and currents of the battery module can be freely adjusted and controlled.