Battery Cover High Temperature Resistant Sheet Thermal Runaway
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Solution Overview
Problem
Conventional rechargeable battery packs in electric vehicles face issues with thermal runaway, where high-temperature substances from one battery can cause chain thermal runaway and fires, affecting other batteries in the pack.
Innovation Solution
A battery design featuring a cover with a high temperature resistant sheet that covers the opening, preventing high temperature substances from entering and reducing the probability of thermal runaway diffusion, while maintaining the original explosion-proof mechanism's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional cover with a first hole is used, then the explosion-proof mechanism can function, but high temperature substances from other batteries can enter through the hole causing chain thermal runaway
Solution Approach 1:
A high temperature resistant sheet is introduced as an intermediary component between the first hole and the battery core. This sheet acts as a thermal barrier that blocks high temperature substances from entering through the hole while allowing the explosion-proof mechanism to function, thereby preventing chain thermal runaway.
Solution Approach 2:
The cover structure is enhanced by combining the original cover material with a high temperature resistant sheet material. This composite structure maintains the explosion-proof functionality of the original cover while adding thermal protection capabilities to prevent thermal runaway diffusion.
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 solution enhances the safety and stability of the battery pack by preventing chain thermal runaway and reducing the risk of explosions or fires, ensuring the normal operation of the explosion-proof mechanism.
Implementation Method 1
a high temperature resistant sheet disposed on a top of the cover body and covering the first hole
Data Source
AI summary
A battery and an electronic device are provided. The battery includes a case having an opening, a battery core disposed in the case, and a cover covering the opening of the case. The cover includes a cover body provided with a first hole and a high temperature resistant sheet disposed on a top of the cover body and covering the first hole.