Battery Module Fuse Layout for Faster Arc Interruption
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Solution Overview
Problem
In battery modules, excessive current flow due to short circuits can result in arcs that persist as electric conduction paths, leading to prolonged current conduction.
Innovation Solution
A battery module design featuring a fuse portion with an arc interruption portion located orthogonally to the fuse and discharging space, where the arc interruption portion is either a beam portion within the cover member or holder, extending across the opening to guide and extinguish the arc.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fuse portion is used to interrupt excessive current, then current protection is achieved, but an arc may persist as an electric conduction path prolonging current flow
Solution Approach 1:
The harmful arc is extracted from the discharging space by directing it toward the arc interruption portion, separating the arc extinction function from the fuse interruption function
Solution Approach 2:
The arc interruption portion acts as an intermediary element between the fuse portion and the discharging space, providing a controlled path for arc extinction that prevents prolonged conduction
2Reliability
If the arc interruption portion is positioned orthogonally to the fuse and discharging space, then arc extinction is improved, but device complexity increases
Solution Approach 1:
The arc interruption portion is merged with either the cover member or holder, combining multiple functions (protection, support, and arc interruption) into a single integrated component, thereby reducing overall device complexity while maintaining arc extinction capability
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
This design effectively shortens the duration of excessive current conduction by interrupting and extinguishing arcs, preventing prolonged electric conduction and protecting the battery module.
Implementation Method 1
an arc generated at a time of melting and disconnection of the fuse portion extends
Data Source
AI summary
A terminal member is electrically connected to at least one battery cell of a plurality of battery cells, and includes a fuse portion. An arc interruption portion is located in a discharging space in which an arc generated at a time of melting and disconnection of the fuse portion extends, and is provided to extend in a direction substantially orthogonal to a direction in which the fuse portion and the discharging space are arranged side by side.