Battery Module Fuse Shielding to Contain Melt Scattering
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Solution Overview
Problem
Fuses in battery modules can scatter during melting, posing a risk of affecting surrounding components.
Innovation Solution
A battery module design that includes a heat-resistant body surrounding the fuse, with a voltage detection portion held by a holding body, and an accommodation body that incorporates part of the heat-resistant body, reducing the likelihood of the fuse scattering and affecting nearby components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fuse is electrically connected to a battery cell without additional protective structures, then the device complexity is reduced, but the fuse may scatter around when it melts and affect surrounding components
Solution Approach 1:
The patent introduces a heat-resistant body as an intermediary structure that surrounds the fuse. This mediator contains the scattered fuse material when the fuse melts, preventing it from reaching and damaging surrounding components such as the voltage detection portion. The heat-resistant body is specifically designed to withstand high temperatures and physically constrain the fuse debris.
Solution Approach 2:
The patent segments the protective structure into distinct functional components: the heat-resistant body that contains thermal and physical hazards, and the holding body that secures the voltage detection portion. This segmentation allows each component to perform its specific protective function independently while working together to solve the overall problem.
2Object-affected harmful factors
If a heat resistant body surrounds the fuse, then the likelihood of fuse scattering affecting components is reduced, but the device complexity increases
Solution Approach 1:
The patent merges the heat-resistant body with the holding body into an integrated protective structure. The heat-resistant body is formed as part of the holding body that also supports the voltage detection portion, combining multiple functions into a single unified component. This integration reduces the number of separate parts while maintaining the protective functionality.
Solution Approach 2:
The holding body serves multiple functions: it holds the voltage detection portion in place, provides structural support, and incorporates the heat-resistant body to contain fuse scattering. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while providing comprehensive protection.
3Device complexity
If the heat resistant body is integrated into the holding body, then the number of components is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent employs parameter changes in the material properties of the heat-resistant body, specifically its high temperature resistance and structural flexibility. These material parameter changes allow the heat-resistant body to be integrated into the holding body while accommodating thermal expansion and contraction during fuse operation, reducing the stringency of dimensional tolerance requirements.
Data Source
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AI summary
A battery module (1) includes a battery cell (100), a fuse (233) electrically connected to the battery cell (100) and extending in a predetermined direction, and a surrounding heat resistant body (211) and a covering heat resistant body (311) at least partially surrounding the fuse (233) around the predetermined direction.