Solid-State Energy Storage Stack for High-Temperature Power Density
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Solution Overview
Problem
Existing energy storage devices have low energy density, which limits their performance in portable and high-temperature applications, and they often require special handling due to flammability and liquid electrolytes.
Innovation Solution
A solid-state energy storage device with a layer stack configuration using a solid electrolyte and active layers, allowing for flexible connections in series and parallel, enabling high energy density and temperature resistance without liquid components, and using materials like LAPT for the electrolyte and LPV for active layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional batteries with liquid electrolytes are used, then ease of manufacture is improved, but energy density is reduced and safety deteriorates due to flammability and leakage risks
Solution Approach 1:
The patent changes the physical state of the electrolyte from liquid to solid, fundamentally altering the energy storage device's characteristics. This parameter change enables higher energy density while eliminating flammability and leakage issues inherent in liquid electrolyte systems
Solution Approach 2:
The patent employs composite material structures including solid electrolyte layers combined with active material layers and electrode layers. This composite approach optimizes both energy density and manufacturing feasibility by integrating multiple functional materials in a layered architecture
2Temperature
If solid-state electrolyte is used, then energy density and temperature resistance are improved, but manufacturing complexity increases
Solution Approach 1:
The patent utilizes the solid state parameter change to achieve temperature resistance, allowing the energy storage device to withstand reflow soldering temperatures and high-temperature environments without degradation, while the thin-layer composite structure maintains manufacturing feasibility
3Ease of manufacture
If liquid electrolytes are used, then ease of manufacture is improved, but safety deteriorates due to leakage and flammability
Solution Approach 1:
The patent changes the electrolyte from liquid to solid phase, which fundamentally eliminates flammability and leakage hazards while maintaining ease of manufacture through established solid-state fabrication techniques and thin-layer processing
Solution Approach 2:
The solid electrolyte layers are designed as thin, solid-state components that can be manufactured using cost-effective deposition and sintering processes, replacing expensive and hazardous liquid electrolyte systems
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 solution provides a high energy density, temperature-resistant, and maintenance-free energy storage device capable of high voltages and currents, suitable for portable devices and reflow soldering processes, with enhanced safety and efficiency.
Implementation Method 1
The electrolyte is a solid. The electrolyte is a solid-state electrolyte... The first electrolyte layer and the second electrolyte layer are permeable to ions, just like the solid-state electrolyte. Advantageously, the solid electrolyte is not permeable to electrons.
Implementation Method 2
The use of a solid-state electrolyte in an energy storage device makes it virtually maintenance-free, as it contains no liquid electrolytes that could, for example, leak or outgas.
Implementation Method 3
such an energy storage device, which can be made entirely of solid materials without liquid components, is temperature-resistant and less flammable.
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a stored energy source having reduced maintenance requirements and improved temperature resistance. The stored energy source has a layer stack. Said layer stack comprises a first electrode, a second electrode, and an electrolyte therebetween. The electrolyte is a solid body.