Battery Pack Case Flow Channels for Thermal Runaway Isolation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery pack cases fail to effectively prevent heat and harmful substances from propagating from a trigger module to normal modules during a thermal runaway situation, leading to potential damage and explosion due to the spread of gases and flames throughout the pack.
Innovation Solution
A battery pack case design featuring flow channels within its frames that allow gases and flames generated during a thermal runaway to be directed and discharged externally, isolating normal modules from the trigger module's hazardous emissions by separating module spaces with dedicated flow channels in the outer and partition frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a venting valve is provided in the battery pack case to discharge gas generated from the trigger module, then gas discharge function is improved, but harmful substances spread throughout the pack case affecting normal modules
Solution Approach 1:
The battery pack case is divided into multiple independent module spaces using partition frames. Each module space is separated from others, preventing the spread of harmful substances generated during thermal runaway. The partition frames create physical barriers that segment the internal space while maintaining structural integrity.
Solution Approach 2:
Flow channels are provided in the partition frames to serve as intermediaries for directing gas flow. These channels guide the gas generated from the trigger module through designated paths to external discharge locations, preventing uncontrolled spread throughout the pack case while maintaining efficient gas evacuation.
2Object-affected harmful factors
If partition frames are added to separate module spaces, then heat propagation prevention is improved, but device complexity increases
Solution Approach 1:
The partition frames serve multiple functions simultaneously: they provide structural support for the battery pack case, create separation between module spaces to prevent heat propagation, and incorporate flow channels for gas discharge. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
Solution Approach 2:
The partition frames are integrated directly into the battery pack case structure, merging the separation function with the overall case design. The flow channels are embedded within the partition frames themselves, combining the gas discharge pathway with the structural element, thus avoiding additional separate components.
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
This design effectively minimizes damage to normal modules by containing and discharging hazardous substances externally, preventing their spread and reducing the risk of explosion, while optimizing space and cost through integrated frame structures.
Implementation Method 1
a flow channel through which a fluid flows is provided in at least one of the outer frame or the partition frame or combination thereof... gas generated during a thermal runaway situation
Data Source
AI summary
Provided are a battery pack case and a battery pack including the same. A battery pack case is capable of preventing heat from propagating from a trigger module to a normal module by providing a flow channel, through which gas generated during a thermal runaway situation is flowable, in frames constituting the battery pack case, and discharging the gas or like to the outside through the flow channel.