Solid-State Battery Modules as Fire Barriers
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Solution Overview
Problem
In battery modules comprising liquid and solid-state battery modules, fires in one liquid battery module can easily spread to other liquid battery modules due to the flammability of electrolyte solutions, despite safety measures like alternating arrangements.
Innovation Solution
Incorporating larger volume solid-state battery modules that act as barriers between liquid battery modules, either in contact or with spaces in between, to prevent fire spread, using inorganic or organic solid electrolytes and various shapes such as cubes or cylinders, ensuring the solid-state modules are less likely to catch fire and can cover or sandwich liquid battery modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If liquid battery modules are arranged alternately with solid-state battery modules, then fire spread between liquid battery modules is suppressed, but the device complexity increases
Solution Approach 1:
The battery module is segmented into alternating liquid battery modules and solid-state battery modules, creating distinct functional zones. The solid-state battery modules act as fire barriers that segment the liquid battery modules, preventing fire spread while maintaining a manageable arrangement pattern.
Solution Approach 2:
Solid-state battery modules are introduced as intermediary elements between liquid battery modules. These intermediaries serve as fire barriers that suppress fire spread while allowing the battery system to maintain its functional requirements and operational reliability.
2Reliability
If solid-state battery modules with larger volume are used as fire barriers, then fire spread is more effectively suppressed, but the volume occupied by non-flammable modules increases
Solution Approach 1:
The volume parameter of solid-state battery modules is optimized to provide adequate fire barrier effectiveness. By adjusting the volume of solid-state modules relative to liquid battery modules, the patent achieves optimal fire suppression while minimizing space occupation, balancing safety requirements with system density.
Data Source
Figure 1A~1B
Figure 1C
Figure 2A~2B
AI summary
A battery module includes a first liquid battery module and a first solid battery module. The first solid-state battery module has a larger volume than a volume of the first liquid battery module.