Battery Module Holder Pieces for Explosion-Proof Valve Emission Containment
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Solution Overview
Problem
Conventional battery modules face challenges in containing emissions from explosion-proof valves when inner pressure increases, leading to potential uncontrolled releases.
Innovation Solution
The battery module design incorporates holders with integrally formed holder pieces that cover explosion-proof valves, preventing emissions from being released in all directions, and uses connecting frames to further trap any escaping gases, while also incorporating cooling passages and heat insulating features to manage temperature and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If explosion-proof valves are provided in cells to relieve inner pressure, then pressure relief function is improved, but emissions are released in all directions causing safety issues
Solution Approach 1:
A holder piece is introduced as an intermediary component between the cell and the explosion-proof valve. This holder piece covers the explosion-proof valve and directs the emitted gas through a predetermined path, preventing uncontrolled release in all directions while maintaining the pressure relief function.
Solution Approach 2:
The holder piece acts as a thin film or shell structure that covers the explosion-proof valve opening. It is designed to be permeable to gas flow while providing directional control, allowing the gas to pass through in a controlled manner rather than being completely blocked.
2Object-affected harmful factors
If holders are added to cover explosion-proof valves, then emission containment is improved, but device complexity increases
Solution Approach 1:
The holder piece is integrally formed with the holder, merging the emission containment function into the existing holder structure. This integration avoids adding separate complex components while achieving the emission containment objective.
Solution Approach 2:
The holder piece serves multiple functions: it covers the explosion-proof valve, directs gas emission, and is integrally formed as part of the holder structure. This multi-functionality reduces the need for additional components and simplifies the overall device structure.
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 contains emissions from opened explosion-proof valves, enhances cooling efficiency, and prevents overheating and corrosion, thereby improving the safety and performance of the battery module.
Implementation Method 1
cooling passages and heat insulating features to manage temperature and pressure
Data Source
AI summary
A battery module includes a plurality of cells and a plurality of holders. The plurality of cells are parallelly arranged in a row at intervals. The plurality of cells have explosion-proof valves which are provided therein and which are capable of opening upon an increase in an inner pressure in the plurality of cells. The plurality of holders are arranged among the cells so as to hold the cells. The holders have holder pieces which are integrally formed therein and which cover at least part of the explosion-valves so as to prevent emissions from the explosion-proof valves from being released in all directions.