Battery Cell Venting Structure to Prevent Plate Puncture
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Thermal runaway in batteries poses a significant risk, leading to potential battery puncture and propagation of thermal runaway, which current technologies struggle to effectively mitigate.
Innovation Solution
A battery design incorporating a pressure relief mechanism with a protective component arranged between a support component and a first plate to absorb and withstand emissions from thermal runaway, reducing the likelihood of the emissions puncturing the plate and propagating thermal runaway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a pressure relief mechanism is added to the battery cell, then thermal runaway emission can be released, but the emission may puncture the battery plate and cause thermal runaway propagation
Solution Approach 1:
A protective component is introduced as an intermediary element positioned between the pressure relief mechanism and the battery plate. This protective component intercepts the thermal runaway emission, allowing it to be released while preventing direct contact with and puncture of the battery plate, thus resolving the contradiction between emission release and puncture prevention
Solution Approach 2:
The protective component is pre-installed in the battery structure to provide cushioning protection before thermal runaway occurs. This beforehand protective measure ensures that when emission is released through the pressure relief mechanism, the protective component is already in position to absorb or deflect the emission, preventing battery plate puncture
2Strength
If the protective component is made thicker to withstand emission impact, then puncture resistance improves, but battery volume increases
Solution Approach 1:
The thickness parameter of the protective component is optimized to a specific range that provides sufficient impact resistance while minimizing volume increase. By carefully selecting the thickness parameter, the design achieves the necessary strength to withstand emission impact without excessive volume addition to the battery
3Stability of the object's composition
If the protective component is securely connected to the first plate, then positional stability improves, but manufacturing complexity increases
Solution Approach 1:
The protective component is integrated with the first plate through direct connection, merging two elements into a unified structure. This integration ensures positional stability while simplifying manufacturing by reducing the number of separate components and assembly steps required
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
The design effectively reduces the probability of battery puncture and thermal runaway propagation by providing a controlled space for emissions and using a protective component to absorb impact forces, maintaining battery integrity.
Implementation Method 1
the protective component is arranged between the support component and the first plate and arranged opposite to the pressure relief mechanism, and is used to withstand an impact force of the emission
Data Source
AI summary
A battery and an electrical apparatus. The battery includes a battery cell, a support component, a first plate, and a protective component; the battery cell includes a pressure relief mechanism, and the pressure relief mechanism is arranged on a first wall of the battery cell; the support component abuts against the first wall to support the battery cell, and the support component is arranged between the battery cell and the first plate. The support component and the first plate are arranged at an interval to form an accommodating space, and the accommodating space is used to accommodate an emission from the battery cell when the pressure relief mechanism is actuated; and the protective component is arranged between the support component and the first plate and arranged opposite to the pressure relief mechanism, and is used to withstand an impact force of the emission.