Dual-Region Battery Venting for Hot Gas Explosion Prevention
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Solution Overview
Problem
Existing battery systems face risks of explosion due to the accumulation of high-temperature and high-pressure flammable gas, which cannot be efficiently exhausted, leading to potential safety hazards.
Innovation Solution
A battery apparatus with an isolation baffle dividing the housing into two regions, each connected to separate exhaust assemblies that control the flow of gas in and out, allowing for the formation of air flows to rapidly exhaust and dissipate high-temperature and high-pressure gases, reducing the risk of explosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery housing is sealed to protect internal components, then protection and safety are improved, but gas accumulation occurs leading to explosion risk
Solution Approach 1:
The battery housing is divided into two separate regions by an isolation baffle: a first region and a second region. Each region has its own exhaust assembly, allowing independent gas exhaust control. This segmentation prevents gas accumulation in a single enclosed space while maintaining overall housing integrity and protection.
Solution Approach 2:
The isolation baffle acts as an intermediary structure that divides the housing interior while allowing controlled gas flow between regions. The separate exhaust assemblies serve as intermediaries to extract gas from each region independently, resolving the contradiction between sealed protection and gas exhaust capability.
2Productivity
If a single exhaust assembly is used, then device complexity is reduced, but gas exhaust efficiency is insufficient to prevent explosion
Solution Approach 1:
The exhaust system is segmented into a first exhaust assembly connected to the first region and a second exhaust assembly connected to the second region. This segmentation enables parallel gas exhaust operations from both regions simultaneously, significantly improving overall exhaust efficiency while keeping each individual exhaust assembly relatively simple in structure.
3Object-generated harmful factors
If the housing is completely open for gas exhaust, then gas venting is improved, but protection of internal components deteriorates
Solution Approach 1:
Rather than opening the entire housing, only specific regions are segmented and equipped with dedicated exhaust assemblies. The isolation baffle maintains housing integrity and protects internal components while allowing targeted gas removal from specific regions, balancing protection and venting capabilities.
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 effectively reduces the concentration and amount of flammable gas, preventing explosions by rapidly exhausting and dissipating heat, thereby enhancing safety and reducing the risk of damage.
Implementation Method 1
the exhaust assembly in one region may be controlled to inhale gas, and the exhaust assembly in the other region may be controlled to exhaust gas, so that an air flow is formed in the two regions
Data Source
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AI summary
This application provides a battery apparatus, a method for controlling a battery apparatus to exhaust gas, and an energy storage device, and relates to the field of battery technologies. The battery apparatus includes a protection housing, at least one battery module, at least one first exhaust assembly, at least one second exhaust assembly, and a control unit. Two types of exhaust assemblies are disposed on the protection housing in the battery apparatus. One type of exhaust assembly is controlled to inhale gas, and the other type of exhaust assembly is controlled to exhaust gas, so that an air flow is formed in two regions. Therefore, the high-temperature and high-pressure gas exhausted by the battery module inside the protection housing is taken out of the protection housing, and heat inside the protection housing is taken away, thereby reducing a risk of explosion of the battery module