Battery Protective Component Mitigates Thermal Runaway Propagation
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Solution Overview
Problem
Thermal runaway in batteries poses a significant risk, leading to potential battery puncture and propagation of thermal runaway, which existing technologies have not adequately addressed.
Innovation Solution
A battery design incorporating a pressure relief mechanism with a protective component arranged between a support component and a first plate to withstand the impact of emissions during thermal runaway, reducing the likelihood of the emission puncturing the plate and thereby inhibiting thermal runaway propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure relief mechanism is provided in the battery cell, then thermal runaway can be relieved, but the emission from the pressure relief mechanism may puncture the first plate causing thermal runaway propagation
Solution Approach 1:
A protective component is introduced as an intermediary between the first plate and the pressure relief mechanism. This protective component absorbs the impact force of the emission discharged from the pressure relief mechanism, preventing the emission from puncturing the first plate while maintaining the thermal runaway relief function.
Solution Approach 2:
The protective component is pre-installed in position to cushion against the emission before it can cause damage. By having the protective component in place beforehand, the system prepares for the thermal runaway event, ensuring that when the pressure relief mechanism activates, the emission is contained and cannot puncture the first plate.
2Reliability
If the protective component is arranged between the support component and the first plate, then the impact force of emission is withstood, but the device complexity increases
Solution Approach 1:
The protective component is designed to perform multiple functions simultaneously: it protects the first plate from puncture, withstands the impact force of emission, and maintains the structural integrity of the battery. By consolidating these functions into a single component, the overall device complexity is minimized while achieving multiple protective goals.
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 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
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Figure 3
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AI summary
A battery (10) and an electrical apparatus are disclosed. Specifically, the battery (10) includes a battery cell (20), a support component (30), a first plate (40), and a protective component (50); the battery cell (20) includes a pressure relief mechanism (213), and the pressure relief mechanism (213) is arranged on a first wall (2001) of the battery cell (20); the support component (30) abuts against the first wall (2001) to support the battery cell (20), and the support component (30) is arranged between the battery cell (20) and the first plate (40). The support component (30) and the first plate (40) are arranged at an interval to form an accommodating space (60), and the accommodating space (60) is used to accommodate an emission from the battery cell (20) when the pressure relief mechanism (213) is actuated; and the protective component (50) is arranged between the support component (30) and the first plate (40) and arranged opposite to the pressure relief mechanism (213), and is used to withstand an impact force of the emission. By arranging the protective component (50), the probability of the emission puncturing the first plate (40) can be reduced, thereby reducing the probability of thermal runaway propagation.