Segmented Battery Module Layout With Central Fire Suppressant
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Solution Overview
Problem
Safety issues arise in battery cells and modules due to potential ignition during manufacturing and use, leading to the spread of flames to surrounding cells.
Innovation Solution
A battery module design that includes multiple groups of battery cells arranged in a specific configuration around a fire extinguishing member, which is housed in a case to effectively block the spread of flames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If battery cells are arranged in a compact configuration to increase energy density, then productivity is improved, but the risk of flame spread between cells increases
Solution Approach 1:
The battery module is divided into multiple groups (first group, second group, third group, fourth group) arranged in a specific configuration around a central fire extinguishing member. This segmentation creates spatial separation between battery cell groups, reducing flame spread risk while maintaining high energy density through optimized arrangement.
Solution Approach 2:
A fire extinguishing member is introduced as an intermediary element positioned in the central space between the four groups of battery cells. This mediator prevents direct flame propagation between adjacent battery groups, addressing the harmful effect of flame spread while allowing compact overall configuration.
2Reliability
If a fire extinguishing member is added to prevent flame spread, then safety is improved, but device complexity increases
Solution Approach 1:
The fire extinguishing member is positioned in the central void space that naturally exists between the four groups of battery cells. By merging the safety function into the central location, the design avoids adding separate structural elements and minimizes overall device complexity while achieving flame spread prevention.
Solution Approach 2:
The central space in the battery module serves dual purposes: it provides structural organization for the four groups of battery cells and simultaneously houses the fire extinguishing member for safety. This multi-functionality reduces the need for additional dedicated spaces or components.
3Reliability
If battery groups are arranged in a specific configuration around the fire extinguishing member, then flame spread is prevented, but manufacturing precision requirements increase
Solution Approach 1:
The battery module is divided into four distinct groups arranged around the central fire extinguishing member. This segmentation into standardized groups simplifies the manufacturing process by allowing modular assembly, reducing the overall precision requirements compared to a fully custom arrangement.
Solution Approach 2:
The four groups of battery cells are positioned asymmetrically around the central fire extinguishing member in a configuration that optimizes flame spread prevention. This asymmetric arrangement allows for effective safety performance while maintaining manufacturing feasibility through standardized group modules.
Data Source
AI summary
A battery module of the present disclosure may include: a first group including a plurality of battery cells arranged in a row; a second group spaced apart from the first group and including a plurality of battery cells arranged in a row; a third group including a plurality of battery cells arranged in a row between the first group and the second group; a fourth group spaced apart from the third group and including a plurality of battery cells arranged in a row between the first group and the second group; a fire extinguishing member disposed in a space between the third group and the fourth group; and a case accommodating the first to fourth groups and the fire extinguishing member.