Modular Lithium-Ion Battery Cell Isolation
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Solution Overview
Problem
Large-scale traditional lithium-ion battery systems pose risks due to potential chain reactions of energetic cell responses, such as fires, resulting from individual cell failures, which can propagate across the battery assembly.
Innovation Solution
A modular and scalable lithium-ion battery system is designed with individual cells configured in various patterns and arrangements, incorporating features like cell modules with isolators, thermal barriers, and heat rejection materials to prevent failure propagation, ensuring that an individual cell failure does not affect others.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple Li-ion batteries are incorporated into a large scale battery system to compensate for limited utility of single battery, then the power and energy capacity of the system is improved, but the risk of chain reaction failures and fires increases
Solution Approach 1:
The battery system is divided into multiple independent modules, each containing isolated cells. Physical barriers and spacing are introduced between cells within modules and between modules, creating segmentation that prevents failure propagation while maintaining system power capacity through parallel configuration of multiple modules.
Solution Approach 2:
Thermal barriers, insulating materials, and fire-resistant partitions are introduced as intermediary elements between battery cells and modules. These intermediaries act as mediators that block heat transfer and failure propagation pathways, allowing the system to maintain high power density while preventing chain reactions.
2Adaptability or versatility
If cells are placed in cell modules in various patterns and arrangements to optimize operational needs, then the adaptability and space utilization are improved, but the device complexity increases
Solution Approach 1:
Standardized cell module designs with universal mounting interfaces and configurations are developed that can accommodate different cell patterns (hexagonal, triangular, square) and scaling requirements. The modular architecture allows the same basic module design to be replicated and combined in various configurations to meet different power and space requirements without redesigning the entire system.
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 the spread of cell failure, enhancing safety by isolating each battery cell and improving heat management, thereby reducing the risk of chain reactions and ensuring the system's reliability and safety across a range of applications.
Implementation Method 1
incorporating features like cell modules with isolators, thermal barriers, and heat rejection materials to prevent failure propagation
Implementation Method 2
a thermally conductive pad, and a heat spreader (e.g., aluminum)
Data Source
AI summary
The present invention relates to a modular lithium-ion battery system that can be scaled vertically and horizontally. A plurality of cell modules can combined to form stacks and layers. Each cell module has a cell body housing a plurality of battery cells. Each cell module has a positive fuse plate and a negative fuse plate connected to opposing sides of the plurality of battery cells.