Solid-State Battery Shock-Absorbing Structure Against Cracking
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Solution Overview
Problem
Solid-state batteries are prone to cracking and failure due to mechanical stress and impact, which can lead to dendrite formation and reduced efficiency, posing a risk of catastrophic failure.
Innovation Solution
A computer-implemented method and system for designing a solid-state battery that integrates shock and vibration absorbing features, using additive manufacturing to incorporate biasing/damping members and shock absorbing materials, and employs digital twin simulations to optimize the integration of elastomeric interfaces and countermeasures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If solid-state battery components are made rigid to maintain structural integrity, then strength is improved, but susceptibility to cracking under mechanical stress and impact increases
Solution Approach 1:
The patent applies flexible shock-absorbing layers and elastomeric materials between rigid battery components (electrodes, electrolyte, current collectors). These flexible elements absorb mechanical stress and impact forces, preventing crack propagation while maintaining the structural integrity of the rigid components. The flexible layers act as cushioning interfaces that deform under stress rather than transmitting forces that would cause cracking.
Solution Approach 2:
The patent creates a composite structure combining rigid battery components with flexible shock-absorbing materials. This composite approach allows the rigid portions to maintain structural integrity while the flexible portions provide damage resistance. The multi-material construction enables simultaneous achievement of strength and reliability by distributing mechanical stresses across different material properties.
2Reliability
If shock absorbing elements are added to prevent cracking, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent integrates shock-absorbing elements directly into the battery component structure, merging the protective function with the existing battery architecture. Rather than adding separate external shock-absorbing devices, the dampening features are incorporated as integral parts of the battery assembly, such as layers between electrodes or modifications to current collector structures, thereby reducing overall complexity.
Solution Approach 2:
The use of thin flexible shock-absorbing films and layers provides protection without significantly increasing structural complexity. These thin films can be laminated or integrated during manufacturing, adding minimal bulk and complexity while effectively distributing stress and preventing crack formation throughout the battery structure.
3Ease of manufacture
If additive manufacturing is used to integrate shock absorbing features, then ease of manufacture is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes additive manufacturing to create shock-absorbing features with optimized geometric parameters and material properties. By controlling printing parameters such as layer thickness, infill density, and material composition, the process achieves both ease of manufacture and sufficient precision for functional performance, leveraging the flexibility of digital manufacturing to adjust parameters for optimal results.
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 effectively prevents cracking and enhances the reliability and durability of solid-state batteries by absorbing mechanical energy, reducing the risk of failure and improving energy storage density.
Implementation Method 1
A countermeasure is integrally incorporated within at least one of the components to absorb mechanical energy to prevent physical damage to the components
Data Source
AI summary
A computer-implemented method for battery design includes determining operational shock and vibration imparted to a solid-state battery and determining portions of the solid-state battery susceptible to damage. Countermeasures are selected for the portions by identifying shock and vibration elements and positions for the shock and vibration elements in the solid-state battery. A three-dimensional (3D) design for a new solid-state battery including the countermeasures is generated. The new solid-state battery is fabricated according to the 3D design using an additive manufacturing process.