Battery Pack Exhaust Channel Particle Interception for Thermal Runaway
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Solution Overview
Problem
Existing battery packs face issues where thermal runaway gases from cell explosion-proof valves expel solid particles that can adversely affect other components and obstruct the casing explosion-proof valve, leading to gas deflagration and thermal diffusion.
Innovation Solution
Incorporating an intercepting structure in the exhaust channel of the battery pack with an intercepting surface to capture particles in the thermal runaway gases, preventing them from obstructing the casing explosion-proof valve and causing further issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cell explosion-proof valve expels thermal runaway gases, then the gases can be discharged from the cell, but solid particles are also expelled and may obstruct the casing explosion-proof valve
Solution Approach 1:
An intercepting structure is introduced as an intermediary component between the cell explosion-proof valve and the casing explosion-proof valve. This structure includes an intercepting surface that captures solid particles from the thermal runaway gases, preventing them from reaching and obstructing the casing explosion-proof valve, while allowing the gases to pass through
2Reliability
If particles are expelled from the cell explosion-proof valve, then thermal runaway gases can be discharged, but the particles may adversely affect other components in the casing
Solution Approach 1:
The intercepting structure serves as a mediator that separates the harmful particles from the thermal runaway gases. The intercepting surface captures particles while allowing gases to pass through, thereby protecting other components in the casing from particle contamination while maintaining the gas discharge function
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 intercepting structure effectively prevents particles from obstructing the casing explosion-proof valve, reducing the risk of gas deflagration and thermal diffusion within the battery pack.
Implementation Method 1
an intercepting structure disposed in the exhaust channel, the intercepting structure has an intercepting surface, the intercepting surface is configured to intercept the particles mixed in the gas discharged from the cell
Data Source
AI summary
Disclosed is a battery pack, including: a casing, the casing having an exhaust channel; multiple cells, the multiple cells being all disposed in the casing, and the gas discharged from the cell being adaptable to be discharged out of the casing through the exhaust channel; an intercepting structure, disposed in the exhaust channel, the intercepting structure having an intercepting surface, the intercepting surface being configured to intercept particles mixed in the gas discharged from the cell. By setting an intercepting structure in the exhaust channel of the casing, the battery pack provided by the present disclosure may intercept the particles in the gas sprayed from the cell when the cell experiences thermal runaway, thereby preventing the particles from continuing to flow with the gas in the casing, preventing the particles from causing adverse effects on the devices in the battery pack and blocking the casing explosion-proof valve.